http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52766 --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-03-29 10:28:55 UTC --- The example was wrong and is not in C++11 http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#381