[llvm-bugs] [Bug 30445] [ARM] Possible race condition in std::atomic_compare_exchange_strong

via llvm-bugs llvm-bugs at lists.llvm.org
Fri Dec 2 13:32:05 PST 2016


Renato Golin <renato.golin at linaro.org> changed:

           What    |Removed                     |Added
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |---

--- Comment #16 from Renato Golin <renato.golin at linaro.org> ---
This is not good. I'm reopening this.

Could this be the result of Clang optimising (and eliding the problem) with the
code? Or undefined behaviour? I don't know enough about the new standards (or
atomics) to identify undefined behaviour in there.


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