https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89024
--- Comment #9 from Marek Polacek <mpolacek at gcc dot gnu.org> --- Author: mpolacek Date: Wed Feb 6 15:36:20 2019 New Revision: 268583 URL: https://gcc.gnu.org/viewcvs?rev=268583&root=gcc&view=rev Log: PR c++/89024 - ICE with incomplete enum type. * call.c (standard_conversion): When converting an ARITHMETIC_TYPE_P to an incomplete type, return NULL. Added: branches/gcc-8-branch/gcc/testsuite/g++.dg/cpp0x/enum37.C Modified: branches/gcc-8-branch/gcc/cp/ChangeLog branches/gcc-8-branch/gcc/cp/call.c