| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: c++03, c++11, c++14 |
| |
| // <functional> |
| |
| // template <class T> |
| // reference_wrapper(T&) -> reference_wrapper<T>; |
| |
| #include <functional> |
| |
| int main(int, char**) { |
| int i = 0; |
| std::reference_wrapper ri(i); |
| static_assert(std::is_same_v<decltype(ri), std::reference_wrapper<int>>); |
| std::reference_wrapper ri2(ri); |
| static_assert(std::is_same_v<decltype(ri2), std::reference_wrapper<int>>); |
| const int j = 0; |
| std::reference_wrapper rj(j); |
| static_assert(std::is_same_v<decltype(rj), std::reference_wrapper<const int>>); |
| std::reference_wrapper rj2(rj); |
| static_assert(std::is_same_v<decltype(rj2), std::reference_wrapper<const int>>); |
| |
| return 0; |
| } |