gcc-4.3.1/gcc/testsuite/g++.dg/cpp0x/variadic6.C

// { dg-options "-std=gnu++0x" }
template<typename ... Args>
struct tuple_base {};

template<typename ... Args>
struct tuple : public tuple_base<Args...>
{ 
};

tuple<> zero;
tuple<int> one;
tuple<float, int> two;