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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 2/5] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY).
@ 2026-03-05 18:58 Antonin Houska <ah@cybertec.at>
  0 siblings, 0 replies; 477+ messages in thread

From: Antonin Houska @ 2026-03-05 18:58 UTC (permalink / raw)

This patch moves the code to index_create_copy() and adds a "concurrently"
parameter so it can be used by REPACK (CONCURRENTLY).

With the CONCURRENTLY option, REPACK cannot simply swap the heap file and
rebuild its indexes. Instead, it needs to build a separate set of indexes
(including system catalog entries) *before* the actual swap, to reduce the
time AccessExclusiveLock needs to be held for.
---
 src/backend/catalog/index.c      | 54 +++++++++++++++++++++++---------
 src/backend/commands/indexcmds.c |  6 ++--
 src/backend/nodes/makefuncs.c    |  9 +++---
 src/include/catalog/index.h      |  3 ++
 src/include/nodes/makefuncs.h    |  4 ++-
 5 files changed, 54 insertions(+), 22 deletions(-)

diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 5ee6389d39c..f8e6c3d804e 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -1288,15 +1288,32 @@ index_create(Relation heapRelation,
 /*
  * index_concurrently_create_copy
  *
- * Create concurrently an index based on the definition of the one provided by
- * caller.  The index is inserted into catalogs and needs to be built later
- * on.  This is called during concurrent reindex processing.
- *
- * "tablespaceOid" is the tablespace to use for this index.
+ * Variant of index_create_copy(), called during concurrent reindex
+ * processing.
  */
 Oid
 index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							   Oid tablespaceOid, const char *newName)
+{
+	return index_create_copy(heapRelation, oldIndexId, tablespaceOid, newName,
+							 true);
+}
+
+/*
+ * index_create_copy
+ *
+ * Create an index based on the definition of the one provided by caller.  The
+ * index is inserted into catalogs. If 'concurrently' is TRUE, it needs to be
+ * built later on, otherwise it's built immediately.
+ *
+ * "tablespaceOid" is the tablespace to use for this index.
+ *
+ * The actual implementation of index_concurrently_create_copy(), reusable for
+ * other purposes.
+ */
+Oid
+index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
+				  const char *newName, bool concurrently)
 {
 	Relation	indexRelation;
 	IndexInfo  *oldInfo,
@@ -1315,6 +1332,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	List	   *indexColNames = NIL;
 	List	   *indexExprs = NIL;
 	List	   *indexPreds = NIL;
+	int			flags = 0;
 
 	indexRelation = index_open(oldIndexId, RowExclusiveLock);
 
@@ -1325,7 +1343,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	 * Concurrent build of an index with exclusion constraints is not
 	 * supported.
 	 */
-	if (oldInfo->ii_ExclusionOps != NULL)
+	if (oldInfo->ii_ExclusionOps != NULL && concurrently)
 		ereport(ERROR,
 				(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
 				 errmsg("concurrent index creation for exclusion constraints is not supported")));
@@ -1381,9 +1399,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 	}
 
 	/*
-	 * Build the index information for the new index.  Note that rebuild of
-	 * indexes with exclusion constraints is not supported, hence there is no
-	 * need to fill all the ii_Exclusion* fields.
+	 * Build the index information for the new index.
 	 */
 	newInfo = makeIndexInfo(oldInfo->ii_NumIndexAttrs,
 							oldInfo->ii_NumIndexKeyAttrs,
@@ -1392,10 +1408,13 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							indexPreds,
 							oldInfo->ii_Unique,
 							oldInfo->ii_NullsNotDistinct,
-							false,	/* not ready for inserts */
-							true,
+							!concurrently,	/* isready */
+							concurrently,	/* concurrent */
 							indexRelation->rd_indam->amsummarizing,
-							oldInfo->ii_WithoutOverlaps);
+							oldInfo->ii_WithoutOverlaps,
+							oldInfo->ii_ExclusionOps,
+							oldInfo->ii_ExclusionProcs,
+							oldInfo->ii_ExclusionStrats);
 
 	/*
 	 * Extract the list of column names and the column numbers for the new
@@ -1433,6 +1452,9 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 		stattargets[i].isnull = isnull;
 	}
 
+	if (concurrently)
+		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
+
 	/*
 	 * Now create the new index.
 	 *
@@ -1456,7 +1478,7 @@ index_concurrently_create_copy(Relation heapRelation, Oid oldIndexId,
 							  indcoloptions->values,
 							  stattargets,
 							  reloptionsDatum,
-							  INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT,
+							  flags,
 							  0,
 							  true, /* allow table to be a system catalog? */
 							  false,	/* is_internal? */
@@ -2450,7 +2472,8 @@ BuildIndexInfo(Relation index)
 					   indexStruct->indisready,
 					   false,
 					   index->rd_indam->amsummarizing,
-					   indexStruct->indisexclusion && indexStruct->indisunique);
+					   indexStruct->indisexclusion && indexStruct->indisunique,
+					   NULL, NULL, NULL);
 
 	/* fill in attribute numbers */
 	for (i = 0; i < numAtts; i++)
@@ -2510,7 +2533,8 @@ BuildDummyIndexInfo(Relation index)
 					   indexStruct->indisready,
 					   false,
 					   index->rd_indam->amsummarizing,
-					   indexStruct->indisexclusion && indexStruct->indisunique);
+					   indexStruct->indisexclusion && indexStruct->indisunique,
+					   NULL, NULL, NULL);
 
 	/* fill in attribute numbers */
 	for (i = 0; i < numAtts; i++)
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 635679cc1f2..34209bd1393 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -243,7 +243,8 @@ CheckIndexCompatible(Oid oldId,
 	 */
 	indexInfo = makeIndexInfo(numberOfAttributes, numberOfAttributes,
 							  accessMethodId, NIL, NIL, false, false,
-							  false, false, amsummarizing, isWithoutOverlaps);
+							  false, false, amsummarizing, isWithoutOverlaps,
+							  NULL, NULL, NULL);
 	typeIds = palloc_array(Oid, numberOfAttributes);
 	collationIds = palloc_array(Oid, numberOfAttributes);
 	opclassIds = palloc_array(Oid, numberOfAttributes);
@@ -930,7 +931,8 @@ DefineIndex(ParseState *pstate,
 							  !concurrent,
 							  concurrent,
 							  amissummarizing,
-							  stmt->iswithoutoverlaps);
+							  stmt->iswithoutoverlaps,
+							  NULL, NULL, NULL);
 
 	typeIds = palloc_array(Oid, numberOfAttributes);
 	collationIds = palloc_array(Oid, numberOfAttributes);
diff --git a/src/backend/nodes/makefuncs.c b/src/backend/nodes/makefuncs.c
index 2caec621d73..ca7e21e8349 100644
--- a/src/backend/nodes/makefuncs.c
+++ b/src/backend/nodes/makefuncs.c
@@ -834,7 +834,8 @@ IndexInfo *
 makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions,
 			  List *predicates, bool unique, bool nulls_not_distinct,
 			  bool isready, bool concurrent, bool summarizing,
-			  bool withoutoverlaps)
+			  bool withoutoverlaps, Oid *exclusion_ops, Oid *exclusion_procs,
+			  uint16 *exclusion_strats)
 {
 	IndexInfo  *n = makeNode(IndexInfo);
 
@@ -863,9 +864,9 @@ makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid, List *expressions,
 	n->ii_PredicateState = NULL;
 
 	/* exclusion constraints */
-	n->ii_ExclusionOps = NULL;
-	n->ii_ExclusionProcs = NULL;
-	n->ii_ExclusionStrats = NULL;
+	n->ii_ExclusionOps = exclusion_ops;
+	n->ii_ExclusionProcs = exclusion_procs;
+	n->ii_ExclusionStrats = exclusion_strats;
 
 	/* speculative inserts */
 	n->ii_UniqueOps = NULL;
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index b259c4141ed..3426087b445 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -99,6 +99,9 @@ extern Oid	index_concurrently_create_copy(Relation heapRelation,
 										   Oid oldIndexId,
 										   Oid tablespaceOid,
 										   const char *newName);
+extern Oid	index_create_copy(Relation heapRelation, Oid oldIndexId,
+							  Oid tablespaceOid, const char *newName,
+							  bool concurrently);
 
 extern void index_concurrently_build(Oid heapRelationId,
 									 Oid indexRelationId);
diff --git a/src/include/nodes/makefuncs.h b/src/include/nodes/makefuncs.h
index 982ec25ae14..dcea148ae1a 100644
--- a/src/include/nodes/makefuncs.h
+++ b/src/include/nodes/makefuncs.h
@@ -99,7 +99,9 @@ extern IndexInfo *makeIndexInfo(int numattrs, int numkeyattrs, Oid amoid,
 								List *expressions, List *predicates,
 								bool unique, bool nulls_not_distinct,
 								bool isready, bool concurrent,
-								bool summarizing, bool withoutoverlaps);
+								bool summarizing, bool withoutoverlaps,
+								Oid *exclusion_ops, Oid *exclusion_procs,
+								uint16 *exclusion_strats);
 
 extern Node *makeStringConst(char *str, int location);
 extern DefElem *makeDefElem(char *name, Node *arg, int location);
-- 
2.47.3


--=-=-=
Content-Type: text/plain
Content-Disposition: attachment;
 filename=v38-0003-Add-CONCURRENTLY-option-to-REPACK-command.patch



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


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2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2025-02-13 15:09 [PATCH v1] BackgroundPsql: Fix potential for lost errors on windows Andres Freund <andres@anarazel.de>
2026-03-05 18:58 [PATCH 2/5] Refactor index_concurrently_create_copy() for use with REPACK (CONCURRENTLY). Antonin Houska <ah@cybertec.at>

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