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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
//
//===----------------------------------------------------------------------===//
// 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;
}
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