1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <utility>
10
11// template <class T> typename add_rvalue_reference<T>::type declval() noexcept;
12
13#include <utility>
14#include <type_traits>
15
16#include "test_macros.h"
17
18class A
19{
20 A(const A&);
21 A& operator=(const A&);
22};
23
24int main(int, char**)
25{
26 static_assert((std::is_same<decltype(std::declval<A>()), A&&>::value), "");
27
28 return 0;
29}
30

source code of libcxx/test/std/utilities/utility/declval/declval.pass.cpp