http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57293
--- Comment #5 from Vladimir Makarov <vmakarov at redhat dot com> --- I've started this work. But unfortunately, i have too many things on my plate now. I was too optimistic. Now I can say only that I am planning to fix it on stage1 (so the fix should be in gcc4.9).