http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59575
--- Comment #25 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Created attachment 31980 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31980&action=edit gcc49-pr59575.patch Ah, of course, you're right, num_dwarf_regs is uninitialized. Fixed thusly.