On Thu, Oct 20, 2022 at 10:40:40PM -0500, Justin Pryzby wrote:
> On Thu, Aug 04, 2022 at 04:16:06PM +1200, Thomas Munro wrote:
> > On Thu, Aug 4, 2022 at 3:38 PM Justin Pryzby <pry...@telsasoft.com> wrote:
> > > [train wreck]
> > 
> > Oh my, so I'm getting the impression we might actually be totally
> > unstable on Cygwin.  Which surprises me because ... wait a minute ...
> > lorikeet isn't even running most of the tests.  So... we don't really
> > know the degree to which any of this works at all?
> 
> Right.
> 
> Maybe it's of limited interest, but ..
> 
> This updates the patch to build and test with meson.
> Which first requires patching some meson.builds.
> I guess that's needed for some current BF members, too.
> Unfortunately, ccache+PCH causes gcc to crash :(

Resending with the 'only-if' line commented (doh).
And some fixes to 001 as Andres pointed out by on other thread.

-- 
Justin
>From 2741472080eceac5cb6d002c39eaf319d7f72b50 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Fri, 30 Sep 2022 13:39:43 -0500
Subject: [PATCH 1/3] meson: other fixes for cygwin

XXX: what about HAVE_BUGGY_STRTOF ?

See: 20221021034040.gt16...@telsasoft.com
---
 meson.build                  | 8 ++++++--
 src/port/meson.build         | 4 ++++
 src/test/regress/meson.build | 2 ++
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/meson.build b/meson.build
index ce2f223a409..ed24370672a 100644
--- a/meson.build
+++ b/meson.build
@@ -211,6 +211,10 @@ if host_system == 'aix'
 
 elif host_system == 'cygwin'
   cppflags += '-D_GNU_SOURCE'
+  dlsuffix = '.dll'
+  mod_link_args_fmt = ['@0@']
+  mod_link_with_name = 'lib@0@.exe.a'
+  mod_link_with_dir = 'libdir'
 
 elif host_system == 'darwin'
   dlsuffix = '.dylib'
@@ -2301,8 +2305,8 @@ gnugetopt_dep = cc.find_library('gnugetopt', required: false)
 #   (i.e., allow '-' as a flag character), so use our version on those platforms
 # - We want to use system's getopt_long() only if the system provides struct
 #   option
-always_replace_getopt = host_system in ['windows', 'openbsd', 'solaris']
-always_replace_getopt_long = host_system == 'windows' or not cdata.has('HAVE_STRUCT_OPTION')
+always_replace_getopt = host_system in ['windows', 'cygwin', 'openbsd', 'solaris']
+always_replace_getopt_long = host_system in ['windows', 'cygwin'] or not cdata.has('HAVE_STRUCT_OPTION')
 
 # Required on BSDs
 execinfo_dep = cc.find_library('execinfo', required: false)
diff --git a/src/port/meson.build b/src/port/meson.build
index c2222696f1b..0ba83cc7930 100644
--- a/src/port/meson.build
+++ b/src/port/meson.build
@@ -40,6 +40,10 @@ if host_system == 'windows'
     'win32setlocale.c',
     'win32stat.c',
   )
+elif host_system == 'cygwin'
+  pgport_sources += files(
+    'dirmod.c',
+  )
 endif
 
 if cc.get_id() == 'msvc'
diff --git a/src/test/regress/meson.build b/src/test/regress/meson.build
index f1adcd9198c..72a23737fa7 100644
--- a/src/test/regress/meson.build
+++ b/src/test/regress/meson.build
@@ -12,6 +12,8 @@ regress_sources = pg_regress_c + files(
 host_tuple_cc = cc.get_id()
 if host_system == 'windows' and host_tuple_cc == 'gcc'
   host_tuple_cc = 'mingw'
+elif host_system == 'cygwin' and host_tuple_cc == 'gcc'
+  host_tuple_cc = 'cygwin'
 endif
 host_tuple = '@0@-@1@-@2@'.format(host_cpu, host_system, host_tuple_cc)
 
-- 
2.25.1

>From 8f31be4d0bf036df890e32568dbc056c36fd57c5 Mon Sep 17 00:00:00 2001
From: Thomas Munro <thomas.mu...@gmail.com>
Date: Mon, 25 Jul 2022 23:05:10 +1200
Subject: [PATCH 2/3] WIP CI support for Cygwin.

ci-os-only: cygwin

See also: d8e78714-dc77-4a64-783f-e863ba4d9...@2ndquadrant.com

https://cirrus-ci.com/task/5145086722834432

XXX This should use a canned Docker image with all the right packages
installed?  But if the larger image is slower to start, then maybe not...
---
 .cirrus.yml                               | 76 +++++++++++++++++++++++
 configure                                 |  2 +-
 configure.ac                              |  2 +-
 src/test/perl/PostgreSQL/Test/Cluster.pm  |  4 +-
 src/test/perl/PostgreSQL/Test/Utils.pm    | 12 +++-
 src/test/recovery/t/020_archive_status.pl |  2 +-
 src/tools/ci/cores_backtrace.sh           | 33 +++++++++-
 src/tools/ci/pg_ci_base.conf              |  2 +
 8 files changed, 122 insertions(+), 11 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index 9f2282471a9..02b0f3b7045 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -464,6 +464,82 @@ task:
       type: text/plain
 
 
+task:
+  name: Windows - Cygwin
+  only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
+  #XXX only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
+  timeout_in: 90m
+
+  env:
+    CPUS: 4
+    BUILD_JOBS: 4
+    TEST_JOBS: 1
+    CCACHE_DIR: /tmp/ccache
+    CCACHE_LOGFILE: ccache.log
+    CONFIGURE_FLAGS: --enable-cassert --enable-debug --with-ldap --with-ssl=openssl --with-libxml
+    # --enable-tap-tests
+    # --disable-dynamicbase
+    # --with-gssapi
+    CONFIGURE_CACHE: /tmp/ccache/configure.cache
+    PG_TEST_USE_UNIX_SOCKETS: 1
+    EXTRA_REGRESS_OPTS: --max-connections=1
+    PG_TEST_EXTRA: ldap ssl # disable kerberos
+
+  windows_container:
+    image: cirrusci/windowsservercore:2019-2022.06.23
+    os_version: 2019
+    cpu: $CPUS
+    memory: 4G
+
+  setup_additional_packages_script: |
+    choco install -y --no-progress cygwin
+    C:\tools\cygwin\cygwinsetup.exe -q -P cygrunsrv,make,gcc-core,ccache,binutils,libtool,pkg-config,flex,bison,zlib-devel,libxml2-devel,libxslt-devel,libssl-devel,openldap-devel,libreadline-devel,perl
+    REM perl-IPC-Run,
+    REM libkrb5-devel,krb5-server
+    C:\tools\cygwin\bin\bash.exe --login -c "cygserver-config -y"
+    C:\tools\cygwin\bin\bash.exe --login -c "echo 'kern.ipc.semmni 1024' >> /etc/cygserver.conf"
+    C:\tools\cygwin\bin\bash.exe --login -c "echo 'kern.ipc.semmns 1024' >> /etc/cygserver.conf"
+    C:\tools\cygwin\bin\bash.exe --login -c "net start cygserver"
+
+  sysinfo_script: |
+    chcp
+    systeminfo
+    powershell -Command get-psdrive -psprovider filesystem
+    set
+    C:\tools\cygwin\bin\bash.exe --login -c "id; uname -a; ulimit -a -H; ulimit -a -S; export"
+
+  ccache_cache:
+    folder: C:\tools\cygwin\tmp\ccache
+    fingerprint_key: ccache/cygwin
+    reupload_on_changes: true
+
+  configure_script:
+    # Try to configure with the cache file, and retry without if it fails, in case the flags changed.
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && for i in 1 2; do ./configure --cache-file=${CONFIGURE_CACHE} ${CONFIGURE_FLAGS} CC='ccache gcc' CFLAGS='-Og -ggdb' && break; rm -v ${CONFIGURE_CACHE}; done"
+
+  build_script:
+    #- C:\tools\cygwin\bin\bash.exe --login -c "ccache --max-size ${CCACHE_MAXSIZE}"
+    - C:\tools\cygwin\bin\bash.exe --login -c "ccache --zero-stats"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && make -s -j ${BUILD_JOBS} world-bin"
+    - C:\tools\cygwin\bin\bash.exe --login -c "ccache --show-stats"
+
+  upload_caches: ccache
+
+  test_world_script:
+    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/subscription"
+    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/recovery"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/modules/test_misc"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/interfaces/libpq"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/bin/psql"
+    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s check ${CHECKFLAGS} -C src/bin -j 2"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 77m make -s -j ${TEST_JOBS} ${CHECK} PROVE_FLAGS='-j2 --timer' ${CHECKFLAGS}"
+
+  on_failure:
+    <<: *on_failure_ac
+    cores_script:
+      - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && src/tools/ci/cores_backtrace.sh cygwin ."
+
+
 task:
   name: CompilerWarnings
 
diff --git a/configure b/configure
index 3966368b8d9..68e366dcfc2 100755
--- a/configure
+++ b/configure
@@ -16494,7 +16494,7 @@ fi
 
 # mingw has adopted a GNU-centric interpretation of optind/optreset,
 # so always use our version on Windows.
-if test "$PORTNAME" = "win32"; then
+if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
   case " $LIBOBJS " in
   *" getopt.$ac_objext "* ) ;;
   *) LIBOBJS="$LIBOBJS getopt.$ac_objext"
diff --git a/configure.ac b/configure.ac
index f76b7ee31fc..33c5475520e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1878,7 +1878,7 @@ fi
 
 # mingw has adopted a GNU-centric interpretation of optind/optreset,
 # so always use our version on Windows.
-if test "$PORTNAME" = "win32"; then
+if test "$PORTNAME" = "win32" -o "$PORTNAME" = "cygwin"; then
   AC_LIBOBJ(getopt)
   AC_LIBOBJ(getopt_long)
 fi
diff --git a/src/test/perl/PostgreSQL/Test/Cluster.pm b/src/test/perl/PostgreSQL/Test/Cluster.pm
index d80134b26f3..5b5e8e67137 100644
--- a/src/test/perl/PostgreSQL/Test/Cluster.pm
+++ b/src/test/perl/PostgreSQL/Test/Cluster.pm
@@ -1052,7 +1052,7 @@ sub enable_restoring
 	# the path contains spaces.
 	$path =~ s{\\}{\\\\}g if ($PostgreSQL::Test::Utils::windows_os);
 	my $copy_command =
-	  $PostgreSQL::Test::Utils::windows_os
+	  $PostgreSQL::Test::Utils::windows_os && !$PostgreSQL::Test::Utils::is_cygwin
 	  ? qq{copy "$path\\\\%f" "%p"}
 	  : qq{cp "$path/%f" "%p"};
 
@@ -1122,7 +1122,7 @@ sub enable_archiving
 	# the path contains spaces.
 	$path =~ s{\\}{\\\\}g if ($PostgreSQL::Test::Utils::windows_os);
 	my $copy_command =
-	  $PostgreSQL::Test::Utils::windows_os
+	  $PostgreSQL::Test::Utils::windows_os && !$PostgreSQL::Test::Utils::is_cygwin
 	  ? qq{copy "%p" "$path\\\\%f"}
 	  : qq{cp "%p" "$path/%f"};
 
diff --git a/src/test/perl/PostgreSQL/Test/Utils.pm b/src/test/perl/PostgreSQL/Test/Utils.pm
index 99d33451064..fb7fca57239 100644
--- a/src/test/perl/PostgreSQL/Test/Utils.pm
+++ b/src/test/perl/PostgreSQL/Test/Utils.pm
@@ -88,10 +88,11 @@ our @EXPORT = qw(
 
   $windows_os
   $is_msys2
+  $is_cygwin
   $use_unix_sockets
 );
 
-our ($windows_os, $is_msys2, $use_unix_sockets, $timeout_default,
+our ($windows_os, $is_msys2, $is_cygwin, $use_unix_sockets, $timeout_default,
 	$tmp_check, $log_path, $test_logfile);
 
 BEGIN
@@ -140,13 +141,18 @@ BEGIN
 	$ENV{PGAPPNAME} = basename($0);
 
 	# Must be set early
-	$windows_os = $Config{osname} eq 'MSWin32' || $Config{osname} eq 'msys';
+	$windows_os = $Config{osname} eq 'MSWin32' || $Config{osname} eq 'msys' ||
+	  $Config{osname} eq 'cygwin';
+
 	# Check if this environment is MSYS2.
 	$is_msys2 =
 	     $windows_os
 	  && -x '/usr/bin/uname'
 	  && `uname -or` =~ /^[2-9].*Msys/;
 
+	# Check if this environment is Cygwin
+	$is_cygwin = $Config{osname} eq 'cygwin';
+
 	if ($windows_os)
 	{
 		require Win32API::File;
@@ -707,7 +713,7 @@ sub dir_symlink
 {
 	my $oldname = shift;
 	my $newname = shift;
-	if ($windows_os)
+	if ($windows_os && !$is_cygwin)
 	{
 		$oldname =~ s,/,\\,g;
 		$newname =~ s,/,\\,g;
diff --git a/src/test/recovery/t/020_archive_status.pl b/src/test/recovery/t/020_archive_status.pl
index fe9ac06b32d..63452b49bd3 100644
--- a/src/test/recovery/t/020_archive_status.pl
+++ b/src/test/recovery/t/020_archive_status.pl
@@ -26,7 +26,7 @@ my $primary_data = $primary->data_dir;
 # a portable solution, use an archive command based on a command known to
 # work but will fail: copy with an incorrect original path.
 my $incorrect_command =
-  $PostgreSQL::Test::Utils::windows_os
+  $PostgreSQL::Test::Utils::windows_os && !$PostgreSQL::Test::Utils::is_cygwin
   ? qq{copy "%p_does_not_exist" "%f_does_not_exist"}
   : qq{cp "%p_does_not_exist" "%f_does_not_exist"};
 $primary->safe_psql(
diff --git a/src/tools/ci/cores_backtrace.sh b/src/tools/ci/cores_backtrace.sh
index 28d3cecfc67..02bd50b10fa 100755
--- a/src/tools/ci/cores_backtrace.sh
+++ b/src/tools/ci/cores_backtrace.sh
@@ -1,5 +1,8 @@
 #! /bin/sh
 
+#set -e
+set -x
+
 if [ $# -ne 2 ]; then
     echo "cores_backtrace.sh <os> <directory>"
     exit 1
@@ -8,17 +11,32 @@ fi
 os=$1
 directory=$2
 
+findargs=''
 case $os in
     freebsd|linux|macos)
-    ;;
+        ;;
+
+    cygwin)
+        # XXX Evidently I don't know how to write two arguments here without pathname expansion later, other than eval.
+        #findargs='-name "*.stackdump"'
+        for stack in $(find "$directory" -type f -name "*.stackdump") ; do
+            binary=`basename "$stack" .stackdump`
+            echo;echo;
+            echo "dumping ${stack} for ${binary}"
+            awk '/^0/{print $2}' $stack |addr2line -f -i -e ./src/backend/postgres.exe
+            #awk '/^0/{print $2}' $stack |addr2line -f -i -e "./src/backend/$binary.exe"
+        done
+        exit 0
+        ;;
+
     *)
         echo "unsupported operating system ${os}"
         exit 1
-    ;;
+        ;;
 esac
 
 first=1
-for corefile in $(find "$directory" -type f) ; do
+for corefile in $(find "$directory" -type f $findargs) ; do
     if [ "$first" -eq 1 ]; then
         first=0
     else
@@ -28,6 +46,13 @@ for corefile in $(find "$directory" -type f) ; do
 
     if [ "$os" = 'macos' ]; then
         lldb -c $corefile --batch -o 'thread backtrace all' -o 'quit'
+    elif [ "$os" = 'cygwin' ]; then
+        # https://cirrus-ci.com/task/4964259674193920
+        #binary=${corefile%.stackdump}
+        #binary=${corefile#*/}
+        binary=`basename "$corefile" .stackdump`
+        echo "dumping ${corefile} for ${binary}"
+        awk '/^0/{print $2}' $corefile |addr2line -f -i -e ./src/backend/postgres.exe
     else
         auxv=$(gdb --quiet --core ${corefile} --batch -ex 'info auxv' 2>/dev/null)
         if [ $? -ne 0 ]; then
@@ -48,3 +73,5 @@ for corefile in $(find "$directory" -type f) ; do
         gdb --batch --quiet -ex "thread apply all bt full" -ex "quit" "$binary" "$corefile" 2>/dev/null
     fi
 done
+
+exit 0
diff --git a/src/tools/ci/pg_ci_base.conf b/src/tools/ci/pg_ci_base.conf
index d8faa9c26c1..206dd993ccc 100644
--- a/src/tools/ci/pg_ci_base.conf
+++ b/src/tools/ci/pg_ci_base.conf
@@ -12,3 +12,5 @@ log_connections = true
 log_disconnections = true
 log_line_prefix = '%m [%p][%b] %q[%a][%v:%x] '
 log_lock_waits = true
+
+data_sync_retry = on
-- 
2.25.1

>From 9aace45e27a1bc0bacd5922db9878d724b7bc492 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Wed, 28 Sep 2022 19:54:59 -0500
Subject: [PATCH 3/3] f!convert to meson

https://cirrus-ci.com/task/5982327657463808
https://community.chocolatey.org/packages/Cygwin#versionhistory

ci-os-only: cygwin
---
 .cirrus.yml                     | 34 +++++++++++++--------------------
 src/tools/ci/cores_backtrace.sh |  4 ++--
 2 files changed, 15 insertions(+), 23 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index 02b0f3b7045..57610e669e8 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -466,24 +466,24 @@ task:
 
 task:
   name: Windows - Cygwin
-  only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
   #XXX only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
-  timeout_in: 90m
+  #XXX only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
+  #timeout_in: 90m
 
   env:
     CPUS: 4
-    BUILD_JOBS: 4
-    TEST_JOBS: 1
+    BUILD_JOBS: $CPUS
+    TEST_JOBS: $CPUS
     CCACHE_DIR: /tmp/ccache
     CCACHE_LOGFILE: ccache.log
-    CONFIGURE_FLAGS: --enable-cassert --enable-debug --with-ldap --with-ssl=openssl --with-libxml
-    # --enable-tap-tests
     # --disable-dynamicbase
     # --with-gssapi
     CONFIGURE_CACHE: /tmp/ccache/configure.cache
     PG_TEST_USE_UNIX_SOCKETS: 1
     EXTRA_REGRESS_OPTS: --max-connections=1
     PG_TEST_EXTRA: ldap ssl # disable kerberos
+    CC: ccache gcc
+    CFLAGS: -Og -ggdb
 
   windows_container:
     image: cirrusci/windowsservercore:2019-2022.06.23
@@ -493,7 +493,7 @@ task:
 
   setup_additional_packages_script: |
     choco install -y --no-progress cygwin
-    C:\tools\cygwin\cygwinsetup.exe -q -P cygrunsrv,make,gcc-core,ccache,binutils,libtool,pkg-config,flex,bison,zlib-devel,libxml2-devel,libxslt-devel,libssl-devel,openldap-devel,libreadline-devel,perl
+    C:\tools\cygwin\cygwinsetup.exe -q -P cygrunsrv,make,gcc-core,ccache,binutils,libtool,pkg-config,flex,bison,zlib-devel,libxml2-devel,libxslt-devel,libssl-devel,openldap-devel,libreadline-devel,perl,meson,ninja
     REM perl-IPC-Run,
     REM libkrb5-devel,krb5-server
     C:\tools\cygwin\bin\bash.exe --login -c "cygserver-config -y"
@@ -514,28 +514,20 @@ task:
     reupload_on_changes: true
 
   configure_script:
-    # Try to configure with the cache file, and retry without if it fails, in case the flags changed.
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && for i in 1 2; do ./configure --cache-file=${CONFIGURE_CACHE} ${CONFIGURE_FLAGS} CC='ccache gcc' CFLAGS='-Og -ggdb' && break; rm -v ${CONFIGURE_CACHE}; done"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && meson setup --buildtype=debug -Dcassert=true -Dssl=openssl -Duuid=e2fs -Dtap_tests=disabled -DPG_TEST_EXTRA='$PG_TEST_EXTRA' build"
 
   build_script:
-    #- C:\tools\cygwin\bin\bash.exe --login -c "ccache --max-size ${CCACHE_MAXSIZE}"
-    - C:\tools\cygwin\bin\bash.exe --login -c "ccache --zero-stats"
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && make -s -j ${BUILD_JOBS} world-bin"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && ninja -C build -j${BUILD_JOBS}"
     - C:\tools\cygwin\bin\bash.exe --login -c "ccache --show-stats"
 
-  upload_caches: ccache
+  always:
+    upload_caches: ccache
 
   test_world_script:
-    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/subscription"
-    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/recovery"
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/test/modules/test_misc"
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/interfaces/libpq"
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s -j ${TEST_JOBS} check ${CHECKFLAGS} -C src/bin/psql"
-    #- C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 44m make -s check ${CHECKFLAGS} -C src/bin -j 2"
-    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && timeout 77m make -s -j ${TEST_JOBS} ${CHECK} PROVE_FLAGS='-j2 --timer' ${CHECKFLAGS}"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && meson test $MTEST_ARGS --num-processes ${TEST_JOBS}"
 
   on_failure:
-    <<: *on_failure_ac
+    <<: *on_failure_meson
     cores_script:
       - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && src/tools/ci/cores_backtrace.sh cygwin ."
 
diff --git a/src/tools/ci/cores_backtrace.sh b/src/tools/ci/cores_backtrace.sh
index 02bd50b10fa..1f0f8795fc6 100755
--- a/src/tools/ci/cores_backtrace.sh
+++ b/src/tools/ci/cores_backtrace.sh
@@ -23,8 +23,8 @@ case $os in
             binary=`basename "$stack" .stackdump`
             echo;echo;
             echo "dumping ${stack} for ${binary}"
-            awk '/^0/{print $2}' $stack |addr2line -f -i -e ./src/backend/postgres.exe
-            #awk '/^0/{print $2}' $stack |addr2line -f -i -e "./src/backend/$binary.exe"
+            awk '/^0/{print $2}' $stack |addr2line -f -i -e ./build/tmp_install/usr/local/pgsql/bin/postgres.exe
+            #awk '/^0/{print $2}' $stack |addr2line -f -i -e "./build/src/backend/$binary.exe"
         done
         exit 0
         ;;
-- 
2.25.1

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