[Justin Pryzby <pryzby@telsasoft.com>]

On Thu, Aug 04, 2022 at 04:16:06PM +1200, Thomas Munro wrote:
> On Thu, Aug 4, 2022 at 3:38 PM Justin Pryzby <pryzby@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 :(

-- 
Justin

Attachments: download all (4 files, .tar.gz)

0001-meson-PROVE-is-not-required.patch (text/x-diff, 1.2K) download
From 0e0d5f33c8f5f3174b0576597971c80834bf76b8 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryzbyj@telsasoft.com>
Date: Fri, 30 Sep 2022 08:56:07 -0500
Subject: [PATCH 1/4] meson: PROVE is not required

It ought to be possible to build the application without running tests,
or without running TAP tests.  And it's essential for supporting
buildfarm/cygwin, where TAP tests consistently fail..
---
 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 2d225f706d2..fd8619d6997 100644
--- a/meson.build
+++ b/meson.build
@@ -323,7 +323,7 @@ python = find_program(get_option('PYTHON'), required: true, native: true)
 flex = find_program(get_option('FLEX'), native: true, version: '>= 2.5.35')
 bison = find_program(get_option('BISON'), native: true, version: '>= 2.3')
 sed = find_program(get_option('SED'), 'sed', native: true)
-prove = find_program(get_option('PROVE'), native: true)
+prove = find_program(get_option('PROVE'), native: true, required: false)
 tar = find_program(get_option('TAR'), native: true)
 gzip = find_program(get_option('GZIP'), native: true)
 program_lz4 = find_program(get_option('LZ4'), native: true, required: false)
-- 
2.25.1

0002-meson-other-fixes-for-cygwin.patch (text/x-diff, 2.4K) download
From 330f91de111f8bee7969818c9001ee6bbc74a048 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryzbyj@telsasoft.com>
Date: Fri, 30 Sep 2022 13:39:43 -0500
Subject: [PATCH 2/4] meson: other fixes for cygwin

XXX: what about HAVE_BUGGY_STRTOF ?
---
 meson.build                  | 8 ++++++--
 src/port/meson.build         | 4 ++++
 src/test/regress/meson.build | 2 +-
 3 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/meson.build b/meson.build
index fd8619d6997..1c3e156f378 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'
@@ -2300,8 +2304,8 @@ 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 3dcfc11278f..6ec3c77af53 100644
--- a/src/test/regress/meson.build
+++ b/src/test/regress/meson.build
@@ -10,7 +10,7 @@ regress_sources = pg_regress_c + files(
 # patterns like ".*-.*-mingw.*". We probably can do better, but for now just
 # replace 'gcc' with 'mingw' on windows.
 host_tuple_cc = cc.get_id()
-if host_system == 'windows' and host_tuple_cc == 'gcc'
+if host_system in ['windows', 'cygwin'] and host_tuple_cc == 'gcc'
   host_tuple_cc = 'mingw'
 endif
 host_tuple = '@0@-@1@-@2@'.format(host_cpu, host_system, host_tuple_cc)
-- 
2.25.1

0003-WIP-CI-support-for-Cygwin.patch (text/x-diff, 9.8K) download
From a054c0bfb95213e0fd37a7f0c59ed29510f2b873 Mon Sep 17 00:00:00 2001
From: Thomas Munro <thomas.munro@gmail.com>
Date: Mon, 25 Jul 2022 23:05:10 +1200
Subject: [PATCH 3/4] WIP CI support for Cygwin.

ci-os-only: cygwin

See also: d8e78714-dc77-4a64-783f-e863ba4d951f@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                               | 62 +++++++++++++++++++++++
 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           | 31 +++++++++++-
 src/tools/ci/pg_ci_base.conf              |  3 ++
 8 files changed, 108 insertions(+), 10 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index d95ff4bded8..cd4cbf9e5ed 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -477,6 +477,68 @@ task:
       type: text/plain
 
 
+task:
+  name: Windows - 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
+    CONFIGURE_FLAGS: --enable-debug --enable-tap-tests --with-ldap --with-ssl=openssl --with-libxml --enable-cassert
+    # --with-gssapi
+    CONFIGURE_CACHE: /tmp/ccache/configure.cache
+    PG_TEST_USE_UNIX_SOCKETS: 1
+    CCACHE_LOGFILE: ccache.log
+    EXTRA_REGRESS_OPTS: --max-connections=1
+    PG_TEST_EXTRA: ldap ssl # disable kerberos
+
+  windows_container:
+    image: cirrusci/windowsservercore:2019
+    os_version: 2019
+    cpu: $CPUS
+    memory: 4G
+
+  setup_additional_packages_script: |
+    choco install -y --no-progress cygwin
+    C:\tools\cygwin\cygwinsetup.exe -q -P cygrunsrv,make,gcc-core,ccache,binutils,libtool,pkg-config,flex,bison,zlib-devel,libxml2-devel,libxslt-devel,libssl-devel,openldap-devel,libreadline-devel,perl,perl-IPC-Run
+    REM libkrb5-devel,krb5-server
+    C:\tools\cygwin\bin\bash.exe --login -c "cygserver-config -y"
+    C:\tools\cygwin\bin\bash.exe --login -c "echo 'kern.ipc.semmni 1024' >> /etc/cygserver.conf"
+    C:\tools\cygwin\bin\bash.exe --login -c "echo 'kern.ipc.semmns 1024' >> /etc/cygserver.conf"
+    C:\tools\cygwin\bin\bash.exe --login -c "net start cygserver"
+
+  sysinfo_script: |
+    chcp
+    systeminfo
+    powershell -Command get-psdrive -psprovider filesystem
+    set
+    C:\tools\cygwin\bin\bash.exe --login -c "id; uname -a; ulimit -a -H; ulimit -a -S; export"
+
+  ccache_cache:
+    folder: C:\tools\cygwin\tmp\ccache
+
+  configure_script:
+    # Try to configure with the cache file, and retry without if it fails, in case the flags changed.
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && for i in 1 2; do ./configure --cache-file=${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 "cd '%cd%' && make -s -j ${BUILD_JOBS} world-bin"
+    - C:\tools\cygwin\bin\bash.exe --login -c "ccache --show-stats"
+
+  always:
+    upload_caches: ccache
+
+  test_world_script:
+    - 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
+    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 5ea790d6380..f4b761db92d 100755
--- a/configure
+++ b/configure
@@ -16439,7 +16439,7 @@ 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 d80cdb5ca25..9b5f8c1cdb4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1877,7 +1877,7 @@ 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 2108d50073a..fd46f45c627 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..27f93147e4e 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
@@ -8,9 +11,24 @@ 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}' $stack |addr2line -f -i -e "./src/backend/$binary.exe"
+            awk '/^0/{print $2}' $stack |addr2line -f -i -e src/backend/postgres.exe
+        done
+        exit 0
+        ;;
+
     *)
         echo "unsupported operating system ${os}"
         exit 1
@@ -18,7 +36,7 @@ case $os in
 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..0d43b387006 100644
--- a/src/tools/ci/pg_ci_base.conf
+++ b/src/tools/ci/pg_ci_base.conf
@@ -12,3 +12,6 @@ log_connections = true
 log_disconnections = true
 log_line_prefix = '%m [%p][%b] %q[%a][%v:%x] '
 log_lock_waits = true
+
+data_sync_retry = on
+shared_memory_type = mmap
-- 
2.25.1

0004-s-convert-to-meson.patch (text/x-diff, 5.1K) download
From bd5fa65f2c9fbc3715382f2bb26d546ef3981729 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryzbyj@telsasoft.com>
Date: Wed, 28 Sep 2022 19:54:59 -0500
Subject: [PATCH 4/4] s!convert to meson

Note that PCH causes gcc to crash:
https://cirrus-ci.com/task/5856316085239808

https://cirrus-ci.com/task/5982327657463808
https://community.chocolatey.org/packages/Cygwin#versionhistory
a semi-relevant message about msys(not cygwin): https://www.postgresql.org/message-id/9f4f22be-f9f1-b350-bc06-521226b87f7a%40dunslane.net

ci-os-only: cygwin
---
 .cirrus.yml                     | 29 +++++++++++++++++------------
 src/tools/ci/cores_backtrace.sh |  4 ++--
 2 files changed, 19 insertions(+), 14 deletions(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index cd4cbf9e5ed..006058a09b0 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -43,6 +43,7 @@ on_failure_meson: &on_failure_meson
       - "build*/testrun/**/*.log"
       - "build*/testrun/**/*.diffs"
       - "build*/testrun/**/regress_log_*"
+      - "**/*.stackdump"
     type: text/plain
 
   # In theory it'd be nice to upload the junit files meson generates, so that
@@ -480,30 +481,35 @@ task:
 task:
   name: Windows - Cygwin
   #XXX only_if: $CIRRUS_CHANGE_MESSAGE =~ '.*\nci-os-only:[^\n]*cygwin.*'
+  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
-    CONFIGURE_FLAGS: --enable-debug --enable-tap-tests --with-ldap --with-ssl=openssl --with-libxml --enable-cassert
-    # --with-gssapi
-    CONFIGURE_CACHE: /tmp/ccache/configure.cache
+    CCACHE_DEPEND: 1
+    # compress because PCH are huge
+    CCACHE_COMPRESS: 1
+    # Actually, do not use ccache for PCH ... it crashes gcc
+    #CCACHE_SLOPPINESS: pch_defines,time_macros,include_file_ctime,include_file_mtime
     PG_TEST_USE_UNIX_SOCKETS: 1
     CCACHE_LOGFILE: ccache.log
     EXTRA_REGRESS_OPTS: --max-connections=1
     PG_TEST_EXTRA: ldap ssl # disable kerberos
+    CFLAGS: -Og -ggdb
 
   windows_container:
-    image: cirrusci/windowsservercore:2019
+    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,perl-IPC-Run
+    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"
     C:\tools\cygwin\bin\bash.exe --login -c "echo 'kern.ipc.semmni 1024' >> /etc/cygserver.conf"
@@ -521,21 +527,20 @@ task:
     folder: C:\tools\cygwin\tmp\ccache
 
   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 ${CONFIGURE_CACHE}; done"
+    - C:\tools\cygwin\bin\bash.exe --login -c "cd '%cd%' && meson setup --buildtype=debug -Dcassert=true -Db_pch=false -Dssl=openssl -Duuid=e2fs -Dtap_tests=disabled -DPG_TEST_EXTRA='$PG_TEST_EXTRA' build"
 
   build_script:
-    - 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"
 
   always:
     upload_caches: ccache
 
   test_world_script:
-    - 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
+    <<: *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 27f93147e4e..1e593429946 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}' $stack |addr2line -f -i -e "./src/backend/$binary.exe"
-            awk '/^0/{print $2}' $stack |addr2line -f -i -e src/backend/postgres.exe
+            #awk '/^0/{print $2}' $stack |addr2line -f -i -e "./build/src/backend/$binary.exe"
+            awk '/^0/{print $2}' $stack |addr2line -f -i -e ./build/tmp_install/usr/local/pgsql/bin/postgres.exe
         done
         exit 0
         ;;
-- 
2.25.1