1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <tuple> 11 12 // template <class... Types> class tuple; 13 14 // template <size_t I, class... Types> 15 // class tuple_element<I, tuple<Types...> > 16 // { 17 // public: 18 // typedef Ti type; 19 // }; 20 21 // UNSUPPORTED: c++98, c++03 22 23 #include <tuple> 24 #include <type_traits> 25 26 int main() 27 { 28 using T = std::tuple<int, long, void*>; 29 using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}} 30 using E2 = typename std::tuple_element<3, T>::type; 31 using E3 = typename std::tuple_element<4, T const>::type; 32 // expected-error@__tuple:* 2 {{static_assert failed}} 33 34 } 35
