On 2012-01-06 10:38, Mathieu Desnoyers wrote: > * Alexandre Montplaisir ([email protected]) wrote: >> I tested it on x86_64, this should be tested on other arches before >> merging, namely to make sure it catches GCC version below 4.4 on ARM. > We don't use these builtins on x86, we use our own implementation > instead. This check does not take into account that some gcc versions > support the builtin, and compile something out of it, but the semantic > of the barrier is wrong, which will lead to runtime races. This check > would be acceptable if: > > 2) it would additionally have gcc version checks for those which had a > broken implementation in the first gcc versions. > Do we have a list of broken gcc or a mean to test that they are broken?
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