http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50853
--- Comment #3 from Alisdair Meredith <public at alisdairm dot net> 2011-10-24 14:02:22 UTC --- The original report was compiled with gcc 4.6.1 supplied by MacPorts. Could you confirm if the not-supported error message occurs in trunk, or a separately compiled gcc 4.6.1?