http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46950
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2010-12-19 20:20:16 UTC --- The same revision caused pr46916. Could you try the patch in http://gcc.gnu.org/bugzilla/attachment.cgi?id=22787 ?