http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59644
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> --- If you have time, could you please try to bisect manually which of the 4 functions matters for the bootstrap failure? Compile printk.s with both compilers and apply by hand only portions of the diff that are for individual routines?