http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58166 --- Comment #3 from Jay Foad <jay.foad at gmail dot com> --- I've bisected this to r191805: http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=191805 http://gcc.gnu.org/ml/gcc-patches/2012-09/msg01764.html