http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56564
--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 30275 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30275&action=edit gcc49-pr56564.patch Untested fix. Honza, is the array type >= 16 bytes alignment increase the only ABI mandated one and all the rest is just optimization?