agora inbox for pgsql-hackers@postgresql.org  
help / color / mirror / Atom feed
[PATCH v7 6/7] Row pattern recognition patch (tests).
477+ messages / 2 participants
[nested] [flat]

* [PATCH v7 6/7] Row pattern recognition patch (tests).
@ 2023-09-22 04:53 Tatsuo Ishii <ishii@postgresql.org>
  0 siblings, 0 replies; 477+ messages in thread

From: Tatsuo Ishii @ 2023-09-22 04:53 UTC (permalink / raw)

---
 src/test/regress/expected/rpr.out  | 594 +++++++++++++++++++++++++++++
 src/test/regress/parallel_schedule |   2 +-
 src/test/regress/sql/rpr.sql       | 292 ++++++++++++++
 3 files changed, 887 insertions(+), 1 deletion(-)
 create mode 100644 src/test/regress/expected/rpr.out
 create mode 100644 src/test/regress/sql/rpr.sql

diff --git a/src/test/regress/expected/rpr.out b/src/test/regress/expected/rpr.out
new file mode 100644
index 0000000000..97bdc630d1
--- /dev/null
+++ b/src/test/regress/expected/rpr.out
@@ -0,0 +1,594 @@
+--
+-- Test for row pattern definition clause
+--
+CREATE TEMP TABLE stock (
+       company TEXT,
+       tdate DATE,
+       price INTEGER
+       	       );
+INSERT INTO stock VALUES ('company1', '2023-07-01', 100);
+INSERT INTO stock VALUES ('company1', '2023-07-02', 200);
+INSERT INTO stock VALUES ('company1', '2023-07-03', 150);
+INSERT INTO stock VALUES ('company1', '2023-07-04', 140);
+INSERT INTO stock VALUES ('company1', '2023-07-05', 150);
+INSERT INTO stock VALUES ('company1', '2023-07-06', 90);
+INSERT INTO stock VALUES ('company1', '2023-07-07', 110);
+INSERT INTO stock VALUES ('company1', '2023-07-08', 130);
+INSERT INTO stock VALUES ('company1', '2023-07-09', 120);
+INSERT INTO stock VALUES ('company1', '2023-07-10', 130);
+INSERT INTO stock VALUES ('company2', '2023-07-01', 50);
+INSERT INTO stock VALUES ('company2', '2023-07-02', 2000);
+INSERT INTO stock VALUES ('company2', '2023-07-03', 1500);
+INSERT INTO stock VALUES ('company2', '2023-07-04', 1400);
+INSERT INTO stock VALUES ('company2', '2023-07-05', 1500);
+INSERT INTO stock VALUES ('company2', '2023-07-06', 60);
+INSERT INTO stock VALUES ('company2', '2023-07-07', 1100);
+INSERT INTO stock VALUES ('company2', '2023-07-08', 1300);
+INSERT INTO stock VALUES ('company2', '2023-07-09', 1200);
+INSERT INTO stock VALUES ('company2', '2023-07-10', 1300);
+SELECT * FROM stock;
+ company  |   tdate    | price 
+----------+------------+-------
+ company1 | 07-01-2023 |   100
+ company1 | 07-02-2023 |   200
+ company1 | 07-03-2023 |   150
+ company1 | 07-04-2023 |   140
+ company1 | 07-05-2023 |   150
+ company1 | 07-06-2023 |    90
+ company1 | 07-07-2023 |   110
+ company1 | 07-08-2023 |   130
+ company1 | 07-09-2023 |   120
+ company1 | 07-10-2023 |   130
+ company2 | 07-01-2023 |    50
+ company2 | 07-02-2023 |  2000
+ company2 | 07-03-2023 |  1500
+ company2 | 07-04-2023 |  1400
+ company2 | 07-05-2023 |  1500
+ company2 | 07-06-2023 |    60
+ company2 | 07-07-2023 |  1100
+ company2 | 07-08-2023 |  1300
+ company2 | 07-09-2023 |  1200
+ company2 | 07-10-2023 |  1300
+(20 rows)
+
+-- basic test using PREV
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w,
+ nth_value(tdate, 2) OVER w AS nth_second
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value | nth_second 
+----------+------------+-------+-------------+------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        140 | 07-02-2023
+ company1 | 07-02-2023 |   200 |             |            | 
+ company1 | 07-03-2023 |   150 |             |            | 
+ company1 | 07-04-2023 |   140 |             |            | 
+ company1 | 07-05-2023 |   150 |             |            | 
+ company1 | 07-06-2023 |    90 |          90 |        120 | 07-07-2023
+ company1 | 07-07-2023 |   110 |             |            | 
+ company1 | 07-08-2023 |   130 |             |            | 
+ company1 | 07-09-2023 |   120 |             |            | 
+ company1 | 07-10-2023 |   130 |             |            | 
+ company2 | 07-01-2023 |    50 |          50 |       1400 | 07-02-2023
+ company2 | 07-02-2023 |  2000 |             |            | 
+ company2 | 07-03-2023 |  1500 |             |            | 
+ company2 | 07-04-2023 |  1400 |             |            | 
+ company2 | 07-05-2023 |  1500 |             |            | 
+ company2 | 07-06-2023 |    60 |          60 |       1200 | 07-07-2023
+ company2 | 07-07-2023 |  1100 |             |            | 
+ company2 | 07-08-2023 |  1300 |             |            | 
+ company2 | 07-09-2023 |  1200 |             |            | 
+ company2 | 07-10-2023 |  1300 |             |            | 
+(20 rows)
+
+-- last_value() should remain consistent
+SELECT company, tdate, price, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | last_value 
+----------+------------+-------+------------
+ company1 | 07-01-2023 |   100 |        140
+ company1 | 07-02-2023 |   200 |           
+ company1 | 07-03-2023 |   150 |           
+ company1 | 07-04-2023 |   140 |           
+ company1 | 07-05-2023 |   150 |           
+ company1 | 07-06-2023 |    90 |        120
+ company1 | 07-07-2023 |   110 |           
+ company1 | 07-08-2023 |   130 |           
+ company1 | 07-09-2023 |   120 |           
+ company1 | 07-10-2023 |   130 |           
+ company2 | 07-01-2023 |    50 |       1400
+ company2 | 07-02-2023 |  2000 |           
+ company2 | 07-03-2023 |  1500 |           
+ company2 | 07-04-2023 |  1400 |           
+ company2 | 07-05-2023 |  1500 |           
+ company2 | 07-06-2023 |    60 |       1200
+ company2 | 07-07-2023 |  1100 |           
+ company2 | 07-08-2023 |  1300 |           
+ company2 | 07-09-2023 |  1200 |           
+ company2 | 07-10-2023 |  1300 |           
+(20 rows)
+
+-- omit "START" in DEFINE but it is ok because "START AS TRUE" is
+-- implicitly defined. per spec.
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w,
+ nth_value(tdate, 2) OVER w AS nth_second
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value | nth_second 
+----------+------------+-------+-------------+------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        140 | 07-02-2023
+ company1 | 07-02-2023 |   200 |             |            | 
+ company1 | 07-03-2023 |   150 |             |            | 
+ company1 | 07-04-2023 |   140 |             |            | 
+ company1 | 07-05-2023 |   150 |             |            | 
+ company1 | 07-06-2023 |    90 |          90 |        120 | 07-07-2023
+ company1 | 07-07-2023 |   110 |             |            | 
+ company1 | 07-08-2023 |   130 |             |            | 
+ company1 | 07-09-2023 |   120 |             |            | 
+ company1 | 07-10-2023 |   130 |             |            | 
+ company2 | 07-01-2023 |    50 |          50 |       1400 | 07-02-2023
+ company2 | 07-02-2023 |  2000 |             |            | 
+ company2 | 07-03-2023 |  1500 |             |            | 
+ company2 | 07-04-2023 |  1400 |             |            | 
+ company2 | 07-05-2023 |  1500 |             |            | 
+ company2 | 07-06-2023 |    60 |          60 |       1200 | 07-07-2023
+ company2 | 07-07-2023 |  1100 |             |            | 
+ company2 | 07-08-2023 |  1300 |             |            | 
+ company2 | 07-09-2023 |  1200 |             |            | 
+ company2 | 07-10-2023 |  1300 |             |            | 
+(20 rows)
+
+-- the first row start with less than or equal to 100
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (LOWPRICE UP+ DOWN+)
+ DEFINE
+  LOWPRICE AS price <= 100,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        140
+ company1 | 07-02-2023 |   200 |             |           
+ company1 | 07-03-2023 |   150 |             |           
+ company1 | 07-04-2023 |   140 |             |           
+ company1 | 07-05-2023 |   150 |             |           
+ company1 | 07-06-2023 |    90 |          90 |        120
+ company1 | 07-07-2023 |   110 |             |           
+ company1 | 07-08-2023 |   130 |             |           
+ company1 | 07-09-2023 |   120 |             |           
+ company1 | 07-10-2023 |   130 |             |           
+ company2 | 07-01-2023 |    50 |          50 |       1400
+ company2 | 07-02-2023 |  2000 |             |           
+ company2 | 07-03-2023 |  1500 |             |           
+ company2 | 07-04-2023 |  1400 |             |           
+ company2 | 07-05-2023 |  1500 |             |           
+ company2 | 07-06-2023 |    60 |          60 |       1200
+ company2 | 07-07-2023 |  1100 |             |           
+ company2 | 07-08-2023 |  1300 |             |           
+ company2 | 07-09-2023 |  1200 |             |           
+ company2 | 07-10-2023 |  1300 |             |           
+(20 rows)
+
+-- second row raises 120%
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (LOWPRICE UP+ DOWN+)
+ DEFINE
+  LOWPRICE AS price <= 100,
+  UP AS price > PREV(price) * 1.2,
+  DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        140
+ company1 | 07-02-2023 |   200 |             |           
+ company1 | 07-03-2023 |   150 |             |           
+ company1 | 07-04-2023 |   140 |             |           
+ company1 | 07-05-2023 |   150 |             |           
+ company1 | 07-06-2023 |    90 |             |           
+ company1 | 07-07-2023 |   110 |             |           
+ company1 | 07-08-2023 |   130 |             |           
+ company1 | 07-09-2023 |   120 |             |           
+ company1 | 07-10-2023 |   130 |             |           
+ company2 | 07-01-2023 |    50 |          50 |       1400
+ company2 | 07-02-2023 |  2000 |             |           
+ company2 | 07-03-2023 |  1500 |             |           
+ company2 | 07-04-2023 |  1400 |             |           
+ company2 | 07-05-2023 |  1500 |             |           
+ company2 | 07-06-2023 |    60 |             |           
+ company2 | 07-07-2023 |  1100 |             |           
+ company2 | 07-08-2023 |  1300 |             |           
+ company2 | 07-09-2023 |  1200 |             |           
+ company2 | 07-10-2023 |  1300 |             |           
+(20 rows)
+
+-- using NEXT
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UPDOWN)
+ DEFINE
+  START AS TRUE,
+  UPDOWN AS price > PREV(price) AND price > NEXT(price)
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        200
+ company1 | 07-02-2023 |   200 |             |           
+ company1 | 07-03-2023 |   150 |             |           
+ company1 | 07-04-2023 |   140 |         140 |        150
+ company1 | 07-05-2023 |   150 |             |           
+ company1 | 07-06-2023 |    90 |             |           
+ company1 | 07-07-2023 |   110 |         110 |        130
+ company1 | 07-08-2023 |   130 |             |           
+ company1 | 07-09-2023 |   120 |             |           
+ company1 | 07-10-2023 |   130 |             |           
+ company2 | 07-01-2023 |    50 |          50 |       2000
+ company2 | 07-02-2023 |  2000 |             |           
+ company2 | 07-03-2023 |  1500 |             |           
+ company2 | 07-04-2023 |  1400 |        1400 |       1500
+ company2 | 07-05-2023 |  1500 |             |           
+ company2 | 07-06-2023 |    60 |             |           
+ company2 | 07-07-2023 |  1100 |        1100 |       1300
+ company2 | 07-08-2023 |  1300 |             |           
+ company2 | 07-09-2023 |  1200 |             |           
+ company2 | 07-10-2023 |  1300 |             |           
+(20 rows)
+
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ INITIAL
+ PATTERN (START UPDOWN)
+ DEFINE
+  START AS TRUE,
+  UPDOWN AS price > PREV(price) AND price > NEXT(price)
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        200
+ company1 | 07-02-2023 |   200 |             |           
+ company1 | 07-03-2023 |   150 |             |           
+ company1 | 07-04-2023 |   140 |         140 |        150
+ company1 | 07-05-2023 |   150 |             |           
+ company1 | 07-06-2023 |    90 |             |           
+ company1 | 07-07-2023 |   110 |         110 |        130
+ company1 | 07-08-2023 |   130 |             |           
+ company1 | 07-09-2023 |   120 |             |           
+ company1 | 07-10-2023 |   130 |             |           
+ company2 | 07-01-2023 |    50 |          50 |       2000
+ company2 | 07-02-2023 |  2000 |             |           
+ company2 | 07-03-2023 |  1500 |             |           
+ company2 | 07-04-2023 |  1400 |        1400 |       1500
+ company2 | 07-05-2023 |  1500 |             |           
+ company2 | 07-06-2023 |    60 |             |           
+ company2 | 07-07-2023 |  1100 |        1100 |       1300
+ company2 | 07-08-2023 |  1300 |             |           
+ company2 | 07-09-2023 |  1200 |             |           
+ company2 | 07-10-2023 |  1300 |             |           
+(20 rows)
+
+-- match everything
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP PAST LAST ROW
+ INITIAL
+ PATTERN (A+)
+ DEFINE
+  A AS TRUE
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |         100 |        130
+ company1 | 07-02-2023 |   200 |             |           
+ company1 | 07-03-2023 |   150 |             |           
+ company1 | 07-04-2023 |   140 |             |           
+ company1 | 07-05-2023 |   150 |             |           
+ company1 | 07-06-2023 |    90 |             |           
+ company1 | 07-07-2023 |   110 |             |           
+ company1 | 07-08-2023 |   130 |             |           
+ company1 | 07-09-2023 |   120 |             |           
+ company1 | 07-10-2023 |   130 |             |           
+ company2 | 07-01-2023 |    50 |          50 |       1300
+ company2 | 07-02-2023 |  2000 |             |           
+ company2 | 07-03-2023 |  1500 |             |           
+ company2 | 07-04-2023 |  1400 |             |           
+ company2 | 07-05-2023 |  1500 |             |           
+ company2 | 07-06-2023 |    60 |             |           
+ company2 | 07-07-2023 |  1100 |             |           
+ company2 | 07-08-2023 |  1300 |             |           
+ company2 | 07-09-2023 |  1200 |             |           
+ company2 | 07-10-2023 |  1300 |             |           
+(20 rows)
+
+-- backtracking with reclassification of rows
+-- using AFTER MATCH SKIP PAST LAST ROW
+SELECT company, tdate, price, first_value(tdate) OVER w, last_value(tdate) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP PAST LAST ROW
+ INITIAL
+ PATTERN (A+ B+)
+ DEFINE
+  A AS price > 100,
+  B AS price > 100
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |             | 
+ company1 | 07-02-2023 |   200 | 07-02-2023  | 07-05-2023
+ company1 | 07-03-2023 |   150 |             | 
+ company1 | 07-04-2023 |   140 |             | 
+ company1 | 07-05-2023 |   150 |             | 
+ company1 | 07-06-2023 |    90 |             | 
+ company1 | 07-07-2023 |   110 | 07-07-2023  | 07-10-2023
+ company1 | 07-08-2023 |   130 |             | 
+ company1 | 07-09-2023 |   120 |             | 
+ company1 | 07-10-2023 |   130 |             | 
+ company2 | 07-01-2023 |    50 |             | 
+ company2 | 07-02-2023 |  2000 | 07-02-2023  | 07-05-2023
+ company2 | 07-03-2023 |  1500 |             | 
+ company2 | 07-04-2023 |  1400 |             | 
+ company2 | 07-05-2023 |  1500 |             | 
+ company2 | 07-06-2023 |    60 |             | 
+ company2 | 07-07-2023 |  1100 | 07-07-2023  | 07-10-2023
+ company2 | 07-08-2023 |  1300 |             | 
+ company2 | 07-09-2023 |  1200 |             | 
+ company2 | 07-10-2023 |  1300 |             | 
+(20 rows)
+
+-- backtracking with reclassification of rows
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price, first_value(tdate) OVER w, last_value(tdate) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ INITIAL
+ PATTERN (A+ B+)
+ DEFINE
+  A AS price > 100,
+  B AS price > 100
+);
+ company  |   tdate    | price | first_value | last_value 
+----------+------------+-------+-------------+------------
+ company1 | 07-01-2023 |   100 |             | 
+ company1 | 07-02-2023 |   200 | 07-02-2023  | 07-05-2023
+ company1 | 07-03-2023 |   150 | 07-03-2023  | 07-05-2023
+ company1 | 07-04-2023 |   140 | 07-04-2023  | 07-05-2023
+ company1 | 07-05-2023 |   150 |             | 
+ company1 | 07-06-2023 |    90 |             | 
+ company1 | 07-07-2023 |   110 | 07-07-2023  | 07-10-2023
+ company1 | 07-08-2023 |   130 | 07-08-2023  | 07-10-2023
+ company1 | 07-09-2023 |   120 | 07-09-2023  | 07-10-2023
+ company1 | 07-10-2023 |   130 |             | 
+ company2 | 07-01-2023 |    50 |             | 
+ company2 | 07-02-2023 |  2000 | 07-02-2023  | 07-05-2023
+ company2 | 07-03-2023 |  1500 | 07-03-2023  | 07-05-2023
+ company2 | 07-04-2023 |  1400 | 07-04-2023  | 07-05-2023
+ company2 | 07-05-2023 |  1500 |             | 
+ company2 | 07-06-2023 |    60 |             | 
+ company2 | 07-07-2023 |  1100 | 07-07-2023  | 07-10-2023
+ company2 | 07-08-2023 |  1300 | 07-08-2023  | 07-10-2023
+ company2 | 07-09-2023 |  1200 | 07-09-2023  | 07-10-2023
+ company2 | 07-10-2023 |  1300 |             | 
+(20 rows)
+
+--
+-- Aggregates
+-- 
+-- using AFTER MATCH SKIP PAST LAST ROW
+SELECT company, tdate, price,
+ first_value(price) OVER w,
+ last_value(price) OVER w,
+ max(price) OVER w,
+ min(price) OVER w,
+ sum(price) OVER w,
+ avg(price) OVER w,
+ count(price) OVER w
+FROM stock
+WINDOW w AS (
+PARTITION BY company
+ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+AFTER MATCH SKIP PAST LAST ROW
+INITIAL
+PATTERN (START UP+ DOWN+)
+DEFINE
+START AS TRUE,
+UP AS price > PREV(price),
+DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value | max  | min | sum  |          avg          | count 
+----------+------------+-------+-------------+------------+------+-----+------+-----------------------+-------
+ company1 | 07-01-2023 |   100 |         100 |        140 |  200 | 100 |  590 |  147.5000000000000000 |     4
+ company1 | 07-02-2023 |   200 |             |            |      |     |      |                       |      
+ company1 | 07-03-2023 |   150 |             |            |      |     |      |                       |      
+ company1 | 07-04-2023 |   140 |             |            |      |     |      |                       |      
+ company1 | 07-05-2023 |   150 |             |            |      |     |      |                       |     0
+ company1 | 07-06-2023 |    90 |          90 |        120 |  130 |  90 |  450 |  112.5000000000000000 |     4
+ company1 | 07-07-2023 |   110 |             |            |      |     |      |                       |      
+ company1 | 07-08-2023 |   130 |             |            |      |     |      |                       |      
+ company1 | 07-09-2023 |   120 |             |            |      |     |      |                       |      
+ company1 | 07-10-2023 |   130 |             |            |      |     |      |                       |     0
+ company2 | 07-01-2023 |    50 |          50 |       1400 | 2000 |  50 | 4950 | 1237.5000000000000000 |     4
+ company2 | 07-02-2023 |  2000 |             |            |      |     |      |                       |      
+ company2 | 07-03-2023 |  1500 |             |            |      |     |      |                       |      
+ company2 | 07-04-2023 |  1400 |             |            |      |     |      |                       |      
+ company2 | 07-05-2023 |  1500 |             |            |      |     |      |                       |     0
+ company2 | 07-06-2023 |    60 |          60 |       1200 | 1300 |  60 | 3660 |  915.0000000000000000 |     4
+ company2 | 07-07-2023 |  1100 |             |            |      |     |      |                       |      
+ company2 | 07-08-2023 |  1300 |             |            |      |     |      |                       |      
+ company2 | 07-09-2023 |  1200 |             |            |      |     |      |                       |      
+ company2 | 07-10-2023 |  1300 |             |            |      |     |      |                       |     0
+(20 rows)
+
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price,
+ first_value(price) OVER w,
+ last_value(price) OVER w,
+ max(price) OVER w,
+ min(price) OVER w,
+ sum(price) OVER w,
+ avg(price) OVER w,
+ count(price) OVER w
+FROM stock
+WINDOW w AS (
+PARTITION BY company
+ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+AFTER MATCH SKIP TO NEXT ROW
+INITIAL
+PATTERN (START UP+ DOWN+)
+DEFINE
+START AS TRUE,
+UP AS price > PREV(price),
+DOWN AS price < PREV(price)
+);
+ company  |   tdate    | price | first_value | last_value | max  | min  | sum  |          avg          | count 
+----------+------------+-------+-------------+------------+------+------+------+-----------------------+-------
+ company1 | 07-01-2023 |   100 |         100 |        140 |  200 |  100 |  590 |  147.5000000000000000 |     4
+ company1 | 07-02-2023 |   200 |             |            |      |      |      |                       |     0
+ company1 | 07-03-2023 |   150 |             |            |      |      |      |                       |     0
+ company1 | 07-04-2023 |   140 |         140 |         90 |  150 |   90 |  380 |  126.6666666666666667 |     3
+ company1 | 07-05-2023 |   150 |             |            |      |      |      |                       |     0
+ company1 | 07-06-2023 |    90 |          90 |        120 |  130 |   90 |  450 |  112.5000000000000000 |     4
+ company1 | 07-07-2023 |   110 |         110 |        120 |  130 |  110 |  360 |  120.0000000000000000 |     3
+ company1 | 07-08-2023 |   130 |             |            |      |      |      |                       |     0
+ company1 | 07-09-2023 |   120 |             |            |      |      |      |                       |     0
+ company1 | 07-10-2023 |   130 |             |            |      |      |      |                       |     0
+ company2 | 07-01-2023 |    50 |          50 |       1400 | 2000 |   50 | 4950 | 1237.5000000000000000 |     4
+ company2 | 07-02-2023 |  2000 |             |            |      |      |      |                       |     0
+ company2 | 07-03-2023 |  1500 |             |            |      |      |      |                       |     0
+ company2 | 07-04-2023 |  1400 |        1400 |         60 | 1500 |   60 | 2960 |  986.6666666666666667 |     3
+ company2 | 07-05-2023 |  1500 |             |            |      |      |      |                       |     0
+ company2 | 07-06-2023 |    60 |          60 |       1200 | 1300 |   60 | 3660 |  915.0000000000000000 |     4
+ company2 | 07-07-2023 |  1100 |        1100 |       1200 | 1300 | 1100 | 3600 | 1200.0000000000000000 |     3
+ company2 | 07-08-2023 |  1300 |             |            |      |      |      |                       |     0
+ company2 | 07-09-2023 |  1200 |             |            |      |      |      |                       |     0
+ company2 | 07-10-2023 |  1300 |             |            |      |      |      |                       |     0
+(20 rows)
+
+--
+-- Error cases
+--
+-- row pattern definition variable name must not appear more than once
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ ORDER BY tdate
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price),
+  UP AS price > PREV(price)
+);
+ERROR:  syntax error at or near "ORDER"
+LINE 6:  ORDER BY tdate
+         ^
+-- pattern variable name must appear in DEFINE
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+ END)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ERROR:  syntax error at or near "END"
+LINE 8:  PATTERN (START UP+ DOWN+ END)
+                                  ^
+-- FRAME must start at current row when row patttern recognition is used
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ERROR:  FRAME must start at current row when row patttern recognition is used
+-- SEEK is not supported
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ SEEK
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+ERROR:  SEEK is not supported
+LINE 8:  SEEK
+         ^
+HINT:  Use INITIAL.
diff --git a/src/test/regress/parallel_schedule b/src/test/regress/parallel_schedule
index 4df9d8503b..896531002b 100644
--- a/src/test/regress/parallel_schedule
+++ b/src/test/regress/parallel_schedule
@@ -98,7 +98,7 @@ test: publication subscription
 # Another group of parallel tests
 # select_views depends on create_view
 # ----------
-test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock indirect_toast equivclass
+test: select_views portals_p2 foreign_key cluster dependency guc bitmapops combocid tsearch tsdicts foreign_data window xmlmap functional_deps advisory_lock indirect_toast equivclass rpr
 
 # ----------
 # Another group of parallel tests (JSON related)
diff --git a/src/test/regress/sql/rpr.sql b/src/test/regress/sql/rpr.sql
new file mode 100644
index 0000000000..bdefd20647
--- /dev/null
+++ b/src/test/regress/sql/rpr.sql
@@ -0,0 +1,292 @@
+--
+-- Test for row pattern definition clause
+--
+
+CREATE TEMP TABLE stock (
+       company TEXT,
+       tdate DATE,
+       price INTEGER
+       	       );
+INSERT INTO stock VALUES ('company1', '2023-07-01', 100);
+INSERT INTO stock VALUES ('company1', '2023-07-02', 200);
+INSERT INTO stock VALUES ('company1', '2023-07-03', 150);
+INSERT INTO stock VALUES ('company1', '2023-07-04', 140);
+INSERT INTO stock VALUES ('company1', '2023-07-05', 150);
+INSERT INTO stock VALUES ('company1', '2023-07-06', 90);
+INSERT INTO stock VALUES ('company1', '2023-07-07', 110);
+INSERT INTO stock VALUES ('company1', '2023-07-08', 130);
+INSERT INTO stock VALUES ('company1', '2023-07-09', 120);
+INSERT INTO stock VALUES ('company1', '2023-07-10', 130);
+INSERT INTO stock VALUES ('company2', '2023-07-01', 50);
+INSERT INTO stock VALUES ('company2', '2023-07-02', 2000);
+INSERT INTO stock VALUES ('company2', '2023-07-03', 1500);
+INSERT INTO stock VALUES ('company2', '2023-07-04', 1400);
+INSERT INTO stock VALUES ('company2', '2023-07-05', 1500);
+INSERT INTO stock VALUES ('company2', '2023-07-06', 60);
+INSERT INTO stock VALUES ('company2', '2023-07-07', 1100);
+INSERT INTO stock VALUES ('company2', '2023-07-08', 1300);
+INSERT INTO stock VALUES ('company2', '2023-07-09', 1200);
+INSERT INTO stock VALUES ('company2', '2023-07-10', 1300);
+
+SELECT * FROM stock;
+
+-- basic test using PREV
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w,
+ nth_value(tdate, 2) OVER w AS nth_second
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- last_value() should remain consistent
+SELECT company, tdate, price, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- omit "START" in DEFINE but it is ok because "START AS TRUE" is
+-- implicitly defined. per spec.
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w,
+ nth_value(tdate, 2) OVER w AS nth_second
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- the first row start with less than or equal to 100
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (LOWPRICE UP+ DOWN+)
+ DEFINE
+  LOWPRICE AS price <= 100,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- second row raises 120%
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (LOWPRICE UP+ DOWN+)
+ DEFINE
+  LOWPRICE AS price <= 100,
+  UP AS price > PREV(price) * 1.2,
+  DOWN AS price < PREV(price)
+);
+
+-- using NEXT
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UPDOWN)
+ DEFINE
+  START AS TRUE,
+  UPDOWN AS price > PREV(price) AND price > NEXT(price)
+);
+
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ INITIAL
+ PATTERN (START UPDOWN)
+ DEFINE
+  START AS TRUE,
+  UPDOWN AS price > PREV(price) AND price > NEXT(price)
+);
+
+-- match everything
+
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP PAST LAST ROW
+ INITIAL
+ PATTERN (A+)
+ DEFINE
+  A AS TRUE
+);
+
+-- backtracking with reclassification of rows
+-- using AFTER MATCH SKIP PAST LAST ROW
+SELECT company, tdate, price, first_value(tdate) OVER w, last_value(tdate) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP PAST LAST ROW
+ INITIAL
+ PATTERN (A+ B+)
+ DEFINE
+  A AS price > 100,
+  B AS price > 100
+);
+
+-- backtracking with reclassification of rows
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price, first_value(tdate) OVER w, last_value(tdate) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ INITIAL
+ PATTERN (A+ B+)
+ DEFINE
+  A AS price > 100,
+  B AS price > 100
+);
+
+--
+-- Aggregates
+-- 
+
+-- using AFTER MATCH SKIP PAST LAST ROW
+SELECT company, tdate, price,
+ first_value(price) OVER w,
+ last_value(price) OVER w,
+ max(price) OVER w,
+ min(price) OVER w,
+ sum(price) OVER w,
+ avg(price) OVER w,
+ count(price) OVER w
+FROM stock
+WINDOW w AS (
+PARTITION BY company
+ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+AFTER MATCH SKIP PAST LAST ROW
+INITIAL
+PATTERN (START UP+ DOWN+)
+DEFINE
+START AS TRUE,
+UP AS price > PREV(price),
+DOWN AS price < PREV(price)
+);
+
+-- using AFTER MATCH SKIP TO NEXT ROW
+SELECT company, tdate, price,
+ first_value(price) OVER w,
+ last_value(price) OVER w,
+ max(price) OVER w,
+ min(price) OVER w,
+ sum(price) OVER w,
+ avg(price) OVER w,
+ count(price) OVER w
+FROM stock
+WINDOW w AS (
+PARTITION BY company
+ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+AFTER MATCH SKIP TO NEXT ROW
+INITIAL
+PATTERN (START UP+ DOWN+)
+DEFINE
+START AS TRUE,
+UP AS price > PREV(price),
+DOWN AS price < PREV(price)
+);
+
+--
+-- Error cases
+--
+
+-- row pattern definition variable name must not appear more than once
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ ORDER BY tdate
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price),
+  UP AS price > PREV(price)
+);
+
+-- pattern variable name must appear in DEFINE
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+ END)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- FRAME must start at current row when row patttern recognition is used
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING
+ INITIAL
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
+
+-- SEEK is not supported
+SELECT company, tdate, price, first_value(price) OVER w, last_value(price) OVER w
+ FROM stock
+ WINDOW w AS (
+ PARTITION BY company
+ ORDER BY tdate
+ ROWS BETWEEN CURRENT ROW AND UNBOUNDED FOLLOWING
+ AFTER MATCH SKIP TO NEXT ROW
+ SEEK
+ PATTERN (START UP+ DOWN+)
+ DEFINE
+  START AS TRUE,
+  UP AS price > PREV(price),
+  DOWN AS price < PREV(price)
+);
-- 
2.25.1


----Next_Part(Fri_Sep_22_14_16_40_2023_530)--
Content-Type: Text/X-Patch; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="v7-0007-Allow-to-print-raw-parse-tree.patch"



^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread


end of thread, other threads:[~2025-02-13 15:09 UTC | newest]

Thread overview: 477+ messages (download: mbox mbox.gz follow: Atom feed)
-- links below jump to the message on this page --
2023-09-22 04:53 [PATCH v7 6/7] Row pattern recognition patch (tests). Tatsuo Ishii <ishii@postgresql.org>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox