https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68142
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Oct 29 14:10:31 2015 New Revision: 229528 URL: https://gcc.gnu.org/viewcvs?rev=229528&root=gcc&view=rev Log: 2015-10-29 Richard Biener <rguent...@suse.de> PR middle-end/68142 * fold-const.c (extract_muldiv_1): Avoid introducing undefined overflow. * c-c++-common/ubsan/pr68142.c: New testcase. Added: trunk/gcc/testsuite/c-c++-common/ubsan/pr68142.c Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/testsuite/ChangeLog