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 26int 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