http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50108
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-08-17 14:58:18 UTC --- 14.1 [temp.param] paragraph 11: "If a template-parameter of a primary class template or alias template is a template parameter pack, it shall be the last template-parameter."
