http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60065
Adam Butcher <abutcher at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |abutcher at gcc dot gnu.org --- Comment #1 from Adam Butcher <abutcher at gcc dot gnu.org> --- I think it is valid. It should be considered equivalent to: template <int, typename... T> void foo(T... x); Looks like the generic parameter pack 'auto...' is replacing the template argument list rather than extending it. I'll look into it.