https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49171
--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Wed Apr 25 07:10:16 2018 New Revision: 259629 URL: https://gcc.gnu.org/viewcvs?rev=259629&root=gcc&view=rev Log: PR c++/85437 PR c++/49171 * cp-tree.h (REINTERPRET_CAST_P): New. * constexpr.c (cxx_eval_constant_expression) <case NOP_EXPR>: Reject REINTERPET_CAST_P conversions. Use cplus_expand_constant for non-trivial PTRMEM_CST cases. * typeck.c (build_nop_reinterpret): New. (build_reinterpret_cast_1): Use it. Set REINTERPRET_CAST_P on NOP_EXPRs returned by cp_convert. * g++.dg/cpp0x/addressof1.C: Make reinterpret cases runtime checks. * g++.dg/cpp0x/constexpr-cast.C: Remove xfails * g++.dg/cpp0x/constexpr-nullptr-2.C: Likewise. * g++.dg/cpp0x/constexpr-pmf1.C: Check when optimized. * g++.dg/cpp0x/pr85437-1.C: New. * g++.dg/cpp0x/pr85437-2.C: New. * g++.dg/cpp0x/pr85437-3.C: New. * g++.dg/cpp0x/pr85437-4.C: New. Added: trunk/gcc/testsuite/g++.dg/cpp0x/pr85437-1.C trunk/gcc/testsuite/g++.dg/cpp0x/pr85437-2.C trunk/gcc/testsuite/g++.dg/cpp0x/pr85437-3.C trunk/gcc/testsuite/g++.dg/cpp0x/pr85437-4.C Modified: trunk/gcc/cp/ChangeLog trunk/gcc/cp/constexpr.c trunk/gcc/cp/cp-tree.h trunk/gcc/cp/typeck.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/g++.dg/cpp0x/addressof1.C trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-cast.C trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-nullptr-2.C trunk/gcc/testsuite/g++.dg/cpp0x/constexpr-pmf1.C