[libcxx-commits] [libcxx] Fix bug in atomic_ref's calculation of lock_free-ness. (PR #93427)

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huixie90 wrote:

I remember that we had a discussion on this in the original PR but I don’t remember the outcome. I was focusing on the clang bit. (IIRC My concern was that clang builtin had assumption that the address is always _Atomic)

https://github.com/llvm/llvm-project/pull/76647#discussion_r1514600368

https://github.com/llvm/llvm-project/pull/93427