http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55616
--- Comment #4 from Florian Weimer <fweimer at redhat dot com> 2013-01-31 10:26:12 UTC --- (In reply to comment #3) > I don't see anything bogus on the warning, it is useful to inform the > developer > about potentially unintended optimization removing some conditional. Neither programmer wrote (X + c) < X, this pattern does not occur in Okular nor Qt. I'm open to labeling the warning as "very difficult to diagnose" or "unhelpful" in these cases, and not "bogus". But I think it's a problem because it distracts from the real problems this warning intends to catch.