http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55273
--- Comment #6 from Steven Bosscher <steven at gcc dot gnu.org> 2012-12-07 11:40:16 UTC --- (In reply to comment #5) > Douglas, can you help investigate the mmap error? > > Run "gcc -v". It will show a line executing the program cc1. Run gdb > on cc1 with the exact same arguments. It will presumably fail in the > same way. Or run gcc with your usual command line, but add "-wrapper gdb,--args". This will automatically call cc1 via gdb.