http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55618
--- Comment #6 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2013-01-07 23:41:41 UTC --- The code in comment #2 is correctly compiled by revision 158253 (2010-04-13), but it is not by revision 159105 (2010-05-06).