http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50644
--- Comment #9 from Andi Kleen <andi-gcc at firstfloor dot org> 2011-10-20 14:05:49 UTC --- Previously the builds produced working code. Now they just segfault. If I revert the patches (plus the ones depending on it) I get working code again. In my book that's a "fix". I don't know what the bug was, but it can't be worth ICEing instead.