http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58574
--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Note that I can't test this easily on the trunk, the partition I have access to has just 2 CPUs and 1GB of RAM, bootstrap/regtest would be very slow if it worked at all, but am testing the 4.8 version of the patch (via a build system scratch build).