https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81148
--- Comment #16 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Thu Aug 3 11:52:00 2017 New Revision: 250853 URL: https://gcc.gnu.org/viewcvs?rev=250853&root=gcc&view=rev Log: 2017-08-03 Richard Biener <rguent...@suse.de> PR middle-end/81148 * fold-const.c (split_tree): Add minus_var and minus_con arguments, remove unused loc arg. Never generate NEGATE_EXPRs here but always use minus_*. (associate_trees): Assert we never associate with MINUS_EXPR and NULL first operand. Do not recurse for PLUS_EXPR operands when associating as MINUS_EXPR either. (fold_binary_loc): Track minus_var and minus_con. * c-c++-common/ubsan/pr81148.c: New testcase. Added: trunk/gcc/testsuite/c-c++-common/ubsan/pr81148.c Modified: trunk/gcc/ChangeLog trunk/gcc/fold-const.c trunk/gcc/testsuite/ChangeLog
