http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56975
--- Comment #9 from Dave Korn <davek at gcc dot gnu.org> 2013-04-19 18:18:19 UTC --- Kai's patch applied cleanly for me vs. Revision: 197992 and allowed my failed build to proceed as far as stage 3 where it failed on libjava (known issue). I'm going to rerun the build from clean and try some tests.