https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68763
--- Comment #20 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 37523 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37523&action=edit gcc6-pr68763.patch Updated non-working patch. Clearly adjusting the METHOD_TYPEs of some cdtors is a nightmare, giving up.