[libcxx-commits] [libcxx] [libc++] Remove ios_base::__xindex_ from the ABI (PR #198994)

[Nikolas Klauser via libcxx-commits]

philnik777 wrote:

@vrukesh Do you possibly have downstream changes? I don't think using `atomic<int>` is new here, it's simply not guarded anymore behind a flag that was always true. FWIW I'd also suggest that maybe you should provide libatomic.

https://github.com/llvm/llvm-project/pull/198994