[libcxx-commits] [libcxx] [libc++] Prevent cycle from including __mbstate_t.h within wchar.h (PR #200940)

[Brad Smith via libcxx-commits]

brad0 wrote:

I ran into this the other day on OpenBSD which breaks all modules use. It makes up a good chunk of the failures we're seeing with the libc++ test suite (first time bothering to run it myself).

https://github.com/llvm/llvm-project/pull/200940