https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123818
--- Comment #6 from Patrick Palka <ppalka at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #5) > looks risky to me especially these days when the FE attempts to defer > folding. > I'm worried about say intermediate cast to different types. I guess we can make the lang hook cxx_type_hash_eq compare default arguments again, but more strictly via cp_tree_equal?
