[libcxx-commits] [libcxx] [libc++][NFC] Refactor _LIBCPP_AVAILABILITY_HAS_* macros to always be defined (PR #71002)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

Also, could you open an issue, so we don't continue to pollute this PR with unrelated posts?

https://github.com/llvm/llvm-project/pull/71002