https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79896
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Author: jakub Date: Tue May 30 08:15:05 2017 New Revision: 248659 URL: https://gcc.gnu.org/viewcvs?rev=248659&root=gcc&view=rev Log: Backported from mainline 2017-03-10 Jakub Jelinek <ja...@redhat.com> PR c++/79896 * decl.c (finish_enum_value_list): If value is error_mark_node, don't copy it and change its type. * init.c (constant_value_1): Return error_mark_node if DECL_INITIAL of CONST_DECL is error_mark_node. * g++.dg/ext/int128-5.C: New test. Modified: branches/gcc-5-branch/gcc/cp/ChangeLog branches/gcc-5-branch/gcc/cp/decl.c branches/gcc-5-branch/gcc/cp/init.c branches/gcc-5-branch/gcc/testsuite/ChangeLog