http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29442
--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-05-07 07:53:46 UTC --- Seems my memory doesn't serve me well already, I've even implemented that: http://gcc.gnu.org/ml/gcc-patches/2010-06/msg01908.html