https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66258
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Jakub Jelinek from comment #5) > Do you plan to backport this to gcc-5-branch? As I mentioned this is really needed to compile grub so if it is not back ported, you can't compile a full Linux distro using gcc 5 at all.