https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84607
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Wed Feb 28 13:40:41 2018 New Revision: 258061 URL: https://gcc.gnu.org/viewcvs?rev=258061&root=gcc&view=rev Log: 2018-02-28 Richard Biener <rguent...@suse.de> PR middle-end/84607 * genmatch.c (capture_info::walk_match): Do not mark captured expressions without operands as expr_p given they act more like predicates and should be subject to "lost tail" side-effect preserving. * gcc.dg/pr84607.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/pr84607.c Modified: trunk/gcc/ChangeLog trunk/gcc/genmatch.c trunk/gcc/testsuite/ChangeLog