https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92751
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Dec 3 10:46:52 2019 New Revision: 278931 URL: https://gcc.gnu.org/viewcvs?rev=278931&root=gcc&view=rev Log: 2019-12-03 Richard Biener <rguent...@suse.de> PR tree-optimization/92751 * tree-ssa-sccvn.c (vn_walk_cb_data::push_partial_def): Fail when a clobber ends up in the partial-def vector. (vn_reference_lookup_3): Let clobbers be handled by the assignment from CTOR handling. * g++.dg/tree-ssa/pr92751.C: New testcase. Added: trunk/gcc/testsuite/g++.dg/tree-ssa/pr92751.C Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-ssa-sccvn.c