[libcxx-commits] [libcxx] [libcxx] Provide locale conversions to tests through lit substitution (PR #105651)

[Martin Storsjö via libcxx-commits]

mstorsjo wrote:

What do you guys (also CC @philnik) think about backporting this to the 20.x release branch? It applies cleanly, and it fixes running the testsuite on Windows 11 and Windows Server 2025.

It is specifically interesting, because Github are now providing free Windows on ARM64 runners, running Windows 11, so we need this for running the tests successfully there. (It's not necessarily relevant to take them into use here upstream quite yet, they're only available in public preview for now, but other projects may wish to run the libcxx tests.)

https://github.com/llvm/llvm-project/pull/105651