https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98642
--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> --- Created attachment 49977 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49977&action=edit possible patch to elide more copies This implements a suggestion I made in https://github.com/itanium-cxx-abi/cxx-abi/issues/107
