http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55041 --- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-10-28 13:57:00 UTC --- (In reply to comment #9) > (I'll file a separate bug about the "unknown type" error for the shared_ptr&& > type) That's http://sourceware.org/PR14441