On Sat, 7 Mar 2020 at 16:01, Chris Hall wrote: > Of course, for all the machines I know well enough I can say that there > is no difference between, inter alia, uint64_t and _Atomic(uint64_t). For some types on some targets the atomic version has stricter alignment requirements. For example, it might be fine to access an int that is only byte-aligned, but for the atomic instructions to work it might need to be 4-byte aligned. This is true for some types on x86.
