[libcxx-commits] [libcxx] [libc++] Enable availability based on the compiler instead of __has_extension (PR #84065)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

> That means that as it stands, libc++ is not compatible at all with `-pedantic-errors`, since it uses a good number of compiler extensions (and really there’s no way it could go without using compiler extensions).

It's not that `-pedantic-errors` disables extensions, it disables `__has_extension` properly reporting extensions.


https://github.com/llvm/llvm-project/pull/84065