https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61982
--- Comment #18 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Mon Apr 30 15:21:01 2018 New Revision: 259772 URL: https://gcc.gnu.org/viewcvs?rev=259772&root=gcc&view=rev Log: PR c++/61982 - dead stores to destroyed objects. gcc/cp/ * call.c (build_trivial_dtor_call): New, assigns a clobber. (build_over_call, build_special_member_call): Use it. * cp-tree.h: Declare it. * init.c (build_delete): Remove trivial path. gcc/ * gimplify.c (gimplify_modify_expr): Simplify complex lvalue on LHS of clobber. Added: trunk/gcc/testsuite/g++.dg/tree-ssa/lifetime-dse1.C Modified: trunk/gcc/ChangeLog trunk/gcc/cp/ChangeLog trunk/gcc/cp/call.c trunk/gcc/cp/cp-tree.h trunk/gcc/cp/init.c trunk/gcc/gimplify.c