https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114175
--- Comment #30 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Eventhough aarch64 has such !TYPE_NO_NAMED_ARGS_STDARG_P test around advancing, most likely it is unaffected, as the hidden return pointer goes in x8 register, while normal integral arguments go in x0-x7.