http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56421
--- Comment #17 from Kristian Spangsege <kristian.spangsege at gmail dot com> 2013-02-23 01:35:02 UTC --- Dude, you are insulting my ego! :-) Anyway, thanks for pointing me to [temp.deduct]/8. SFINAE certainly does not apply in my example.