[clang] [libcxx] Reland: [clang] unified CWG2398 and P0522 changes; finishes implementation of P3310 (PR #124137)

[Matheus Izvekov via cfe-commits]

mizvekov wrote:

@ziqingluo-90 I had already responded here: https://github.com/llvm/llvm-project/issues/130778#issuecomment-2843256610

I think you moved your post between issues after I had responded.

https://github.com/llvm/llvm-project/pull/124137