On Wed, May 06, 2015 at 04:58:03PM +0200, Jakub Jelinek wrote: > Also, it would be nice to figure why gcc doesn't warn (for both meaningful > changes, in the first snippet I believe gcc just determines the static > function is noreturn and that is why it correctly doesn't warn). > I thought Marek has added patches for the !x == Y case recently, so it would > be nice to find out why we don't warn in that case.
Yes, I'd expect a warning to trigger on that. > Similarly for the bool case, does clang warn on +/++ operation on bool (which > is well defined, supposedly it should be some style warning?), or something > else? clang++ warns for bool b = false; b++; but not for bool b = false; b += 2; Marek