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

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wang-bin wrote:

This will be a problem on android. If I build my library with new ndk(libc++18 or later), library users may use an old ndk version(for example ndk23, llvm-12), the users will get link error, because these symbols exists in libc++13 and later.

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