https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86485
--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Tue Mar 5 22:20:41 2019 New Revision: 269403 URL: https://gcc.gnu.org/viewcvs?rev=269403&root=gcc&view=rev Log: PR c++/86485 - -Wmaybe-unused with empty class ?: The problem in this testcase is that the front end expects an rvalue COND_EXPR to initialize a single temporary from one of the arms. But because gimplify_cond_expr used MODIFY_EXPR, instead the arms would each create their own temporary and then copy that into the common temporary. So, let's use INIT_EXPR instead. * gimplify.c (gimplify_cond_expr): Use INIT_EXPR. Added: trunk/gcc/testsuite/g++.dg/init/empty2.C Modified: trunk/gcc/ChangeLog trunk/gcc/gimplify.c
