https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67354
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 36728 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36728&action=edit gcc6-pr67354.patch Untested hack that just defers generating mangling aliases if at_eof, until the fns are put into the same comdat group.