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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <tuple>
// template <class... Types> class tuple;
// template <size_t I, class... Types>
// class tuple_element<I, tuple<Types...> >
// {
// public:
// typedef Ti type;
// };
// UNSUPPORTED: c++98, c++03
#include <tuple>
#include <type_traits>
int main()
{
using T = std::tuple<int, long, void*>;
using E1 = typename std::tuple_element<1, T &>::type; // expected-error{{undefined template}}
using E2 = typename std::tuple_element<3, T>::type;
using E3 = typename std::tuple_element<4, T const>::type;
// expected-error@__tuple:* 2 {{static_assert failed}}
}
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