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[PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
477+ messages / 2 participants
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* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

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

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

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


--sno7qfndt3qie53q--





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

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

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows
@ 2025-02-13 15:09 Andres Freund <andres@anarazel.de>
  0 siblings, 0 replies; 477+ messages in thread

From: Andres Freund @ 2025-02-13 15:09 UTC (permalink / raw)

Author:
Reviewed-by:
Discussion: https://postgr.es/m/
Backpatch:
---
 .../perl/PostgreSQL/Test/BackgroundPsql.pm    | 55 +++++++++++++++----
 1 file changed, 43 insertions(+), 12 deletions(-)

diff --git a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
index dbfd82e4fac..7e76845307d 100644
--- a/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
+++ b/src/test/perl/PostgreSQL/Test/BackgroundPsql.pm
@@ -89,7 +89,8 @@ sub new
 		'stdin' => '',
 		'stdout' => '',
 		'stderr' => '',
-		'query_timer_restart' => undef
+		'query_timer_restart' => undef,
+		'query_cnt' => 1,
 	};
 	my $run;
 
@@ -219,27 +220,57 @@ sub query
 	my ($self, $query) = @_;
 	my $ret;
 	my $output;
+	my $query_cnt = $self->{query_cnt}++;
+
 	local $Test::Builder::Level = $Test::Builder::Level + 1;
 
-	note "issuing query via background psql: $query";
+	note "issuing query $query_cnt via background psql: $query";
 
 	$self->{timeout}->start() if (defined($self->{query_timer_restart}));
 
 	# Feed the query to psql's stdin, followed by \n (so psql processes the
 	# line), by a ; (so that psql issues the query, if it doesn't include a ;
-	# itself), and a separator echoed with \echo, that we can wait on.
-	my $banner = "background_psql: QUERY_SEPARATOR";
-	$self->{stdin} .= "$query\n;\n\\echo $banner\n";
-
-	pump_until($self->{run}, $self->{timeout}, \$self->{stdout}, qr/$banner/);
+	# itself), and a separator echoed both with \echo and \warn, that we can
+	# wait on.
+	#
+	# To avoid somehow confusing the separator from separately issued queries,
+	# and to make it easier to debug, we include a per-psql query counter in
+	# the separator.
+	#
+	# We need both \echo (printing to stdout) and \warn (printing to stderr),
+	# because on windows we can get data on stdout before seeing data on
+	# stderr (or vice versa), even if psql printed them in the opposite
+	# order. We therefore wait on both.
+	#
+	# We need to match for the newline, because we try to remove it below, and
+	# it's possible to consume just the input *without* the newline. In
+	# interactive psql we emit \r\n, so we need to allow for that. Also need
+	# to be careful that we don't e.g. match the echoed \echo command, rather
+	# than its output.
+	my $banner = "background_psql: QUERY_SEPARATOR $query_cnt";
+	my $banner_match = qr/(^|\n)$banner\r?\n/;
+	$self->{stdin} .= "$query\n;\n\\echo $banner\n\\warn $banner\n";
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stdout}, qr/$banner_match/);
+	pump_until(
+		$self->{run}, $self->{timeout},
+		\$self->{stderr}, qr/$banner_match/);
 
 	die "psql query timed out" if $self->{timeout}->is_expired;
+
+	note "query returned:\n",
+	  explain {
+		stdout => $self->{stdout},
+		stderr => $self->{stderr},
+	  };
+
+	# Remove banner from stdout and stderr, our caller doesn't care.  The
+	# first newline is optional, as there would not be one if consuming an
+	# empty query result.
 	$output = $self->{stdout};
-
-	# Remove banner again, our caller doesn't care.  The first newline is
-	# optional, as there would not be one if consuming an empty query
-	# result.
-	$output =~ s/\n?$banner\n$//s;
+	$output =~ s/$banner_match//;
+	$self->{stderr} =~ s/$banner_match//;
 
 	# clear out output for the next query
 	$self->{stdout} = '';
-- 
2.48.1.76.g4e746b1a31.dirty


--sno7qfndt3qie53q--





^ permalink  raw  reply  [nested|flat] 477+ messages in thread

* [PATCH v7 3/6] Handle pg_get_indexdef default args in system_functions.sql
@ 2025-12-09 18:02 Mark Wong <markwkm@gmail.com>
  0 siblings, 0 replies; 477+ messages in thread

From: Mark Wong @ 2025-12-09 18:02 UTC (permalink / raw)

Modernize pg_get_indexdef to use proargdefaults to handle the optional
column and pretty argument.
---
 src/backend/utils/adt/ruleutils.c | 20 --------------------
 src/include/catalog/pg_proc.dat   |  8 +++-----
 2 files changed, 3 insertions(+), 25 deletions(-)

diff --git a/src/backend/utils/adt/ruleutils.c b/src/backend/utils/adt/ruleutils.c
index 1202cb07c07..55926ec15e0 100644
--- a/src/backend/utils/adt/ruleutils.c
+++ b/src/backend/utils/adt/ruleutils.c
@@ -1125,26 +1125,6 @@ pg_get_triggerdef_worker(Oid trigid, bool pretty)
  */
 Datum
 pg_get_indexdef(PG_FUNCTION_ARGS)
-{
-	Oid			indexrelid = PG_GETARG_OID(0);
-	int			prettyFlags;
-	char	   *res;
-
-	prettyFlags = PRETTYFLAG_INDENT;
-
-	res = pg_get_indexdef_worker(indexrelid, 0, NULL,
-								 false, false,
-								 false, false,
-								 prettyFlags, true);
-
-	if (res == NULL)
-		PG_RETURN_NULL();
-
-	PG_RETURN_TEXT_P(string_to_text(res));
-}
-
-Datum
-pg_get_indexdef_ext(PG_FUNCTION_ARGS)
 {
 	Oid			indexrelid = PG_GETARG_OID(0);
 	int32		colno = PG_GETARG_INT32(1);
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 8d81dcdc2f6..dfedf5c2851 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -3984,9 +3984,6 @@
 { oid => '1642', descr => 'role name by OID (with fallback)',
   proname => 'pg_get_userbyid', provolatile => 's', prorettype => 'name',
   proargtypes => 'oid', prosrc => 'pg_get_userbyid' },
-{ oid => '1643', descr => 'index description',
-  proname => 'pg_get_indexdef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid', prosrc => 'pg_get_indexdef' },
 { oid => '3415', descr => 'extended statistics object description',
   proname => 'pg_get_statisticsobjdef', provolatile => 's',
   prorettype => 'text', proargtypes => 'oid',
@@ -8603,9 +8600,10 @@
   prorettype => 'text', proargtypes => 'oid int4',
   prosrc => 'pg_get_viewdef_wrap' },
 { oid => '2507',
-  descr => 'index description (full create statement or single expression) with pretty-print option',
+  descr => 'index description',
   proname => 'pg_get_indexdef', provolatile => 's', prorettype => 'text',
-  proargtypes => 'oid int4 bool', prosrc => 'pg_get_indexdef_ext' },
+  proargtypes => 'oid int4 bool', proargnames => '{index,column,pretty}',
+  proargdefaults => '{0,false}', prosrc => 'pg_get_indexdef' },
 { oid => '2508', descr => 'constraint description with pretty-print option',
   proname => 'pg_get_constraintdef', provolatile => 's', prorettype => 'text',
   proargtypes => 'oid bool', prosrc => 'pg_get_constraintdef_ext' },
-- 
2.52.0


--GzYugJnip6WHHvTk
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment;
	filename=v7-0004-Handle-pg_get_constraintdef-default-args-in-syste.patch



^ permalink  raw  reply  [nested|flat] 477+ messages in thread


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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-12-09 18:02 [PATCH v7 3/6] Handle pg_get_indexdef default args in system_functions.sql Mark Wong <markwkm@gmail.com>

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