https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63697
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Fri Oct 31 11:33:13 2014 New Revision: 216966 URL: https://gcc.gnu.org/viewcvs?rev=216966&root=gcc&view=rev Log: PR sanitizer/63697 * tree-vrp.c (simplify_internal_call_using_ranges): For subcode == MINUS_EXPR, check overflow on vr0.min - vr1.max and vr0.max - vr1.min instead of vr0.min - vr1.min and vr0.max - vr1.max. * c-c++-common/ubsan/overflow-sub-3.c: New test. Added: branches/gcc-4_9-branch/gcc/testsuite/c-c++-common/ubsan/overflow-sub-3.c Modified: branches/gcc-4_9-branch/gcc/ChangeLog branches/gcc-4_9-branch/gcc/testsuite/ChangeLog branches/gcc-4_9-branch/gcc/tree-vrp.c
