https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88122
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Actually no, I think the const_p computation is ok, it is only relevant for const vs. non-const copy ctor or const vs. non-const copy assignment, right? So I think my patch is the right thing here. E.g. copy_fn_p also returns 0 early if FUNCTION_FIRST_USER_PARMTYPE is NULL.