https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80452
--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> --- Author: jason Date: Thu Aug 10 19:07:30 2017 New Revision: 251035 URL: https://gcc.gnu.org/viewcvs?rev=251035&root=gcc&view=rev Log: PR c++/80452 - Core 1579, implicit move semantics on return/throw * cp-tree.h (LOOKUP_PREFER_RVALUE): Now means that we've already tentatively changed the lvalue to an rvalue. * call.c (reference_binding): Remove LOOKUP_PREFER_RVALUE handling. (build_over_call): If LOOKUP_PREFER_RVALUE, check that the first parameter is an rvalue reference. * except.c (build_throw): Do maybe-rvalue overload resolution twice. * typeck.c (check_return_expr): Likewise. Added: trunk/gcc/testsuite/g++.dg/cpp0x/move-return1.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/call.c trunk/gcc/cp/cp-tree.h trunk/gcc/cp/except.c trunk/gcc/cp/typeck.c
