[libcxx-commits] [libcxx] [libc++] Deprecates std::errc constants. (PR #80542)

[Nico Weber via libcxx-commits]

nico wrote:

Is there a way to opt out of this, to be able to fix async? I thought maybe defining `_LIBCPP_SUPPRESS_DEPRECATED_PUSH` might work, but that apparently isn't an extension point.

https://github.com/llvm/llvm-project/pull/80542