https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86480
Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu.org --- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> --- Created attachment 44395 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44395&action=edit patch The find_parameter_packs_r hunk fixes this bug; the cp_walk_subtrees hunk fixes a bug also found by my testcase, but is incomplete.