[libcxx-commits] [libcxx] [libc++][z/OS] Move z/OS to new locale API and resolve all name collisions (PR #165428)

[Louis Dionne via libcxx-commits]

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ldionne wrote:

Why is it desirable to test that this declaration is in that namespace? That's an implementation detail of libc++, not something that's user visible?

https://github.com/llvm/llvm-project/pull/165428