gh-161735: Update zlib-ng to 2.2.5 on Windows - #161813

@maikschulze, please check that just the version bump is sufficient to address your issue.

I don't suppose we had a test case for the bug?

IIUC, the symptom is failures of existing tests on certain configurations (which we apparently don't have in CI or buildbots).

please check that just the version bump is sufficient to address your issue.

Yes, the version bump is enough. I built this PR (dd7fe7c) and its base (0ada998) with PCbuild\build.bat -p x64 --pgo and VS 17.11.3 (MSVC 14.41) on a Ryzen 9 7950X:

• base (zlib-ng 2.2.4): test_zlib, test_gzip and test_tarfile fail as in the issue (test_decompressmaxlen, test_decompressmaxlenflush, test_write_seek_write, GzipStreamReadTest.test_compare_members)
• this PR (zlib-ng 2.2.5): test_zlib, test_gzip, test_tarfile and test_zipfile all pass

The zlib-ng-2.2.5 tag in cpython-source-deps has the same files as the upstream 2.2.5 release. Thanks!

Excellent, thanks!

I tried reproducing the failures in a VM on a machine with a Ryzen 9 7900, but I could not match the configuration correctly enough to see the failures myself.

Thanks @zware for the PR 🌮🎉.. I'm working now to backport this PR to: 3.14, 3.15.
🐍🍒⛏🤖

Sorry, @zware, I could not cleanly backport this to 3.14 due to a conflict.

Please backport manually with cherry_picker, see the devguide for more information.

cherry_picker a969bcf0713caac7ad5366de1eb193cf4ba25a46 3.14

GH-161883 is a backport of this pull request to the 3.15 branch.

GH-161884 is a backport of this pull request to the 3.14 branch.