[libcxx-commits] [libcxx] [libc++][windows] Use _wsetlocale() in __locale_guard (PR #160479)

[Louis Dionne via libcxx-commits]

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ldionne wrote:

How did you test the changes to this file? This file only applies to the C++03 "frozen" headers, which are not tested on Windows at the moment IIRC. The status of these headers is currently in flux -- you didn't do anything wrong, but I want to know whether you made this change because you saw a failure or not, and if so how you tested it.

https://github.com/llvm/llvm-project/pull/160479