[libcxx-commits] [libcxx] [libcxx] Define `_LIBCPP_HAS_C8RTOMB_MBRTOC8` to true if compiling with clang (PR #152724)

[David Spickett via libcxx-commits]

DavidSpickett wrote:

If you can write out in pseudocode what your ideal XFAIL would be, I can try to figure it out. I've spent a lot of time in these test frameworks, for better or worse.

https://github.com/llvm/llvm-project/pull/152724