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

[Victor Campos via libcxx-commits]

vhscampos wrote:

@DavidSpickett Thanks for your comment. Inspired by your idea I created a new lit feature to check the glibc version if glibc is indeed the C library in use. Now I believe the xfails are correct. The failing CI jobs are unrelated.

@philnik777 for your attention, please. If can have another look to see if everything is ok.

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