[llvm-branch-commits] [libcxx] release/22.x: [libc++][test] Use loop with compare_exchange_weak calls (#185953) (PR #194642)

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dyung wrote:

> FYI @dyung re: [#194306 (comment)](https://github.com/llvm/llvm-project/pull/194306#issuecomment-4333463926)

Thanks. Does this commit need to go in before #194306?

https://github.com/llvm/llvm-project/pull/194642