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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 1/4] Make propgraph object descriptions translatable
@ 2026-05-26 07:14 Kyotaro Horiguchi <horikyota.ntt@gmail.com>
  0 siblings, 0 replies; 477+ messages in thread

From: Kyotaro Horiguchi @ 2026-05-26 07:14 UTC (permalink / raw)

getObjectDescription() currently constructs propgraph-related object
descriptions incrementally with appendStringInfo(). This effectively
fixes the word order in English, which makes the messages difficult to
translate naturally into languages such as Japanese.

Build the whole object description from a single format string
instead.
---
 src/backend/catalog/objectaddress.c | 61 ++++++++++++++++++++---------
 1 file changed, 43 insertions(+), 18 deletions(-)

diff --git a/src/backend/catalog/objectaddress.c b/src/backend/catalog/objectaddress.c
index 050b7829eb0..c107d0fb0e4 100644
--- a/src/backend/catalog/objectaddress.c
+++ b/src/backend/catalog/objectaddress.c
@@ -4077,6 +4077,9 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 			{
 				HeapTuple	tup;
 				Form_pg_propgraph_element pgeform;
+				StringInfoData objdesc;
+
+				initStringInfo(&objdesc);
 
 				tup = SearchSysCache1(PROPGRAPHELOID, ObjectIdGetDatum(object->objectId));
 				if (!HeapTupleIsValid(tup))
@@ -4089,15 +4092,15 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 
 				pgeform = (Form_pg_propgraph_element) GETSTRUCT(tup);
 
+				getRelationDescription(&objdesc, pgeform->pgepgid, false);
+				Assert(objdesc.len > 0);
+
 				if (pgeform->pgekind == PGEKIND_VERTEX)
-					/* translator: followed by, e.g., "property graph %s" */
-					appendStringInfo(&buffer, _("vertex %s of "), NameStr(pgeform->pgealias));
+					appendStringInfo(&buffer, _("vertex %s of %s"), NameStr(pgeform->pgealias), objdesc.data);
 				else if (pgeform->pgekind == PGEKIND_EDGE)
-					/* translator: followed by, e.g., "property graph %s" */
-					appendStringInfo(&buffer, _("edge %s of "), NameStr(pgeform->pgealias));
+					appendStringInfo(&buffer, _("edge %s of %s"), NameStr(pgeform->pgealias), objdesc.data);
 				else
-					appendStringInfo(&buffer, "??? element %s of ", NameStr(pgeform->pgealias));
-				getRelationDescription(&buffer, pgeform->pgepgid, false);
+					appendStringInfo(&buffer, "??? element %s of %s", NameStr(pgeform->pgealias), objdesc.data);
 
 				ReleaseSysCache(tup);
 				break;
@@ -4109,6 +4112,9 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 				HeapTuple	tuple;
 				Form_pg_propgraph_element_label pgelform;
 				ObjectAddress oa;
+				StringInfoData objdesc;
+
+				initStringInfo(&objdesc);
 
 				rel = table_open(PropgraphElementLabelRelationId, AccessShareLock);
 				tuple = get_catalog_object_by_oid(rel,
@@ -4125,9 +4131,13 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 
 				pgelform = (Form_pg_propgraph_element_label) GETSTRUCT(tuple);
 
-				appendStringInfo(&buffer, _("label %s of "), get_propgraph_label_name(pgelform->pgellabelid));
-				ObjectAddressSet(oa, PropgraphElementRelationId, pgelform->pgelelid);
-				appendStringInfoString(&buffer, getObjectDescription(&oa, false));
+				ObjectAddressSet(oa, PropgraphElementRelationId,
+								 pgelform->pgelelid);
+				appendStringInfoString(&objdesc,
+									   getObjectDescription(&oa, false));
+				Assert(objdesc.len > 0);
+
+				appendStringInfo(&buffer, _("label %s of %s"), get_propgraph_label_name(pgelform->pgellabelid), objdesc.data);
 
 				table_close(rel, AccessShareLock);
 				break;
@@ -4137,6 +4147,9 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 			{
 				HeapTuple	tuple;
 				Form_pg_propgraph_label pglform;
+				StringInfoData objdesc;
+
+				initStringInfo(&objdesc);
 
 				tuple = SearchSysCache1(PROPGRAPHLABELOID, ObjectIdGetDatum(object->objectId));
 				if (!HeapTupleIsValid(tuple))
@@ -4148,9 +4161,10 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 
 				pglform = (Form_pg_propgraph_label) GETSTRUCT(tuple);
 
-				/* translator: followed by, e.g., "property graph %s" */
-				appendStringInfo(&buffer, _("label %s of "), NameStr(pglform->pgllabel));
-				getRelationDescription(&buffer, pglform->pglpgid, false);
+				getRelationDescription(&objdesc, pglform->pglpgid, false);
+				Assert(objdesc.len > 0);
+
+				appendStringInfo(&buffer, _("label %s of %s"), NameStr(pglform->pgllabel), objdesc.data);
 				ReleaseSysCache(tuple);
 				break;
 			}
@@ -4161,6 +4175,9 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 				HeapTuple	tuple;
 				Form_pg_propgraph_label_property plpform;
 				ObjectAddress oa;
+				StringInfoData objdesc;
+
+				initStringInfo(&objdesc);
 
 				rel = table_open(PropgraphLabelPropertyRelationId, AccessShareLock);
 				tuple = get_catalog_object_by_oid(rel,
@@ -4177,9 +4194,13 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 
 				plpform = (Form_pg_propgraph_label_property) GETSTRUCT(tuple);
 
-				appendStringInfo(&buffer, _("property %s of "), get_propgraph_property_name(plpform->plppropid));
-				ObjectAddressSet(oa, PropgraphElementLabelRelationId, plpform->plpellabelid);
-				appendStringInfoString(&buffer, getObjectDescription(&oa, false));
+				ObjectAddressSet(oa, PropgraphElementLabelRelationId,
+								 plpform->plpellabelid);
+				appendStringInfoString(&objdesc,
+									   getObjectDescription(&oa, false));
+				Assert(objdesc.len > 0);
+
+				appendStringInfo(&buffer, _("property %s of %s"), get_propgraph_property_name(plpform->plppropid), objdesc.data);
 
 				table_close(rel, AccessShareLock);
 				break;
@@ -4189,6 +4210,9 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 			{
 				HeapTuple	tuple;
 				Form_pg_propgraph_property pgpform;
+				StringInfoData objdesc;
+
+				initStringInfo(&objdesc);
 
 				tuple = SearchSysCache1(PROPGRAPHPROPOID, ObjectIdGetDatum(object->objectId));
 				if (!HeapTupleIsValid(tuple))
@@ -4200,9 +4224,10 @@ getObjectDescription(const ObjectAddress *object, bool missing_ok)
 
 				pgpform = (Form_pg_propgraph_property) GETSTRUCT(tuple);
 
-				/* translator: followed by, e.g., "property graph %s" */
-				appendStringInfo(&buffer, _("property %s of "), NameStr(pgpform->pgpname));
-				getRelationDescription(&buffer, pgpform->pgppgid, false);
+				getRelationDescription(&objdesc, pgpform->pgppgid, false);
+				Assert(objdesc.len > 0);
+
+				appendStringInfo(&buffer, _("property %s of %s"), NameStr(pgpform->pgpname), objdesc.data);
 				ReleaseSysCache(tuple);
 				break;
 			}
-- 
2.47.3


----Next_Part(Thu_May_28_12_16_22_2026_214)--
Content-Type: Text/X-Patch; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
 filename="0002-Use-double-quotes-in-message.patch"



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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>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2026-05-26 07:14 [PATCH 1/4] Make propgraph object descriptions translatable Kyotaro Horiguchi <horikyota.ntt@gmail.com>

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