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// <functional>
10
11// reference_wrapper
12
13// template <ObjectType T> reference_wrapper<T> ref(T& t);
14
15// Don't allow binding to a temp
16
17#include <functional>
18
19struct A {};
20
21const A source() {return A();}
22
23int main(int, char**)
24{
25 std::reference_wrapper<const A> r = std::ref(source());
26 (void)r;
27
28 return 0;
29}
30

source code of libcxx/test/std/utilities/function.objects/refwrap/refwrap.helpers/ref_1.compile.fail.cpp