https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90124
--- Comment #8 from Jason Merrill <jason at gcc dot gnu.org> --- (In reply to Marek Polacek from comment #7) > (In reply to Marek Polacek from comment #6) > > The operand of the decltype specifier is an unevaluated operand and perhaps > > we have to take that into account here. > > ...i.e., naming of objects does not, by itself, require that a definition be > provided. This should fix it: > > --- a/gcc/cp/typeck.c > +++ b/gcc/cp/typeck.c > @@ -2478,6 +2478,7 @@ build_class_member_access_expr (cp_expr object, tree > member, > must: we don't know how to refer to a base member before layout is > complete. But still don't complain in a template. */ > if (!dependent_type_p (object_type) > + && !cp_unevaluated_operand > && !complete_type_or_maybe_complain (object_type, object, > complain)) > return error_mark_node; Looks good.
