https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95560
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>: https://gcc.gnu.org/g:02f6c5b711b8188c3f49a79c730911b0bd216585 commit r9-8668-g02f6c5b711b8188c3f49a79c730911b0bd216585 Author: Marek Polacek <pola...@redhat.com> Date: Thu Jun 11 17:58:21 2020 -0400 c++: Fix ICE in check_local_shadow with enum [PR95560] Another indication that perhaps this warning is emitted too early. We crash because same_type_p gets a null type: we have an enumerator without a fixed underlying type and finish_enum_value_list hasn't yet run. So check if the type is null before calling same_type_p. PR c++/95560 * name-lookup.c (check_local_shadow): Check if types are non-null before calling same_type_p. * g++.dg/warn/Wshadow-compatible-local-3.C: New test.