https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96645
--- Comment #15 from Jason Merrill <jason at gcc dot gnu.org> --- Created attachment 52663 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52663&action=edit patch to make dependency on unparsed DMI a hard error This doesn't seem to break anything in the library, only the two front-end tests that were specifically for the SFINAE behavior.