[libcxx-commits] [libcxx] [libc++] P2641R4: Checking if a `union` alternative is active (`std::is_within_lifetime`) (PR #107450)

[Mital Ashok via libcxx-commits]

MitalAshok wrote:

GCC is expected to use the same name as Clang: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110367#c2

https://cplusplus.github.io/LWG/issue4138 is still open and the current proposed resolution doesn't allow `void` pointers either.

https://github.com/llvm/llvm-project/pull/107450