https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94628
--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> --- (In reply to Nicholas Krause from comment #5) > Shouldn't we also we testing for TYPE_ARGUMENT_PACK as well? Seems to be > missing in the reported patch id and is not checked higher up the stack > after looking through the code it seems. No, that doesn't fix the ICE.