From: Justin Pryzby <pryzbyj@telsasoft.com>
Date: Wed, 25 May 2022 21:53:22 -0500
Subject: [PATCH 1/8] cirrus/windows: add compiler_warnings_script

The goal is to fail due to warnings only after running tests.
(At least historically, it's too slow to run a separate windows VM to
compile with -Werror.)

https://www.postgresql.org/message-id/20220212212310.f645c6vw3njkgxka%40alap3.anarazel.de

I'm not sure how to write this test in windows shell; it's also easy to
write something that doesn't work in posix sh, since windows shell is
interpretting && and ||...

See also:
8a1ce5e54f6d144e4f8e19af7c767b026ee0c956
https://cirrus-ci.com/task/6241060062494720
https://cirrus-ci.com/task/6496366607204352

ci-os-only: windows
---
 .cirrus.yml | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/.cirrus.yml b/.cirrus.yml
index d3f88821a85..13213ffd304 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -589,28 +589,37 @@ task:
     echo 127.0.0.2 pg-loadbalancetest >> c:\Windows\System32\Drivers\etc\hosts
     echo 127.0.0.3 pg-loadbalancetest >> c:\Windows\System32\Drivers\etc\hosts
     type c:\Windows\System32\Drivers\etc\hosts
 
   # Use /DEBUG:FASTLINK to avoid high memory usage during linking
   configure_script: |
     vcvarsall x64
     meson setup --backend ninja --buildtype debug -Dc_link_args=/DEBUG:FASTLINK -Dcassert=true -Db_pch=true -Dextra_lib_dirs=c:\openssl\1.1\lib -Dextra_include_dirs=c:\openssl\1.1\include -DTAR=%TAR% -DPG_TEST_EXTRA="%PG_TEST_EXTRA%" build
 
   build_script: |
     vcvarsall x64
-    ninja -C build
+    ninja -C build |tee build.txt
+    REM Since pipes lose the exit status of the preceding command, rerun the compilation
+    REM without the pipe, exiting now if it fails, to avoid trying to run checks
+    ninja -C build > nul
 
   check_world_script: |
     vcvarsall x64
     meson test %MTEST_ARGS% --num-processes %TEST_JOBS%
 
+  # This should be last, so check_world is run even if there are warnings
+  always:
+    compiler_warnings_script:
+      # this avoids using metachars which would be interpretted by the windows shell
+      - sh -c 'if grep ": warning " build.txt; then exit 1; fi; exit 0'
+
   on_failure:
     <<: *on_failure_meson
     crashlog_artifacts:
       path: "crashlog-*.txt"
       type: text/plain
 
 
 task:
   << : *WINDOWS_ENVIRONMENT_BASE
   name: Windows - Server 2019, MinGW64 - Meson
 
-- 
2.34.1


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