http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49344
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-06-10 08:32:37 UTC --- With the patch in comment #3 applied on top of revision 174846 I have been able to update powerpc-apple-darwin9 (long update, but not a full bootstrap).