http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57846
--- Comment #1 from Vincent <vince.rev at gmail dot com> --- Apparently, this is also a bug in the last version (4.9): http://stackoverflow.com/questions/17515079/crtp-templates-metaprogramming-forwarding-and-static-member-a-bug-in-g-4-8
