https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67089
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[4.9/5/6 Regression] |[4.9/5 Regression] Integer |Integer overflow checks not |overflow checks not |optimized on x86/x86_64 |optimized on x86/x86_64 --- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Fixed on the trunk so far. Wonder if this is desirable to backport.