https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95560
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> --- We have a CONST_DECL with null type -- it's the case when the underlying type is not fixed, and finish_enum_value_list hasn't yet run. A stopgap fix would be --- a/gcc/cp/name-lookup.c +++ b/gcc/cp/name-lookup.c @@ -2762,7 +2762,9 @@ check_local_shadow (tree decl) enum opt_code warning_code; if (warn_shadow) warning_code = OPT_Wshadow; - else if (same_type_p (TREE_TYPE (old), TREE_TYPE (decl)) + else if ((TREE_TYPE (old) + && TREE_TYPE (decl) + && same_type_p (TREE_TYPE (old), TREE_TYPE (decl))) || TREE_CODE (decl) == TYPE_DECL || TREE_CODE (old) == TYPE_DECL || (!dependent_type_p (TREE_TYPE (decl))