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// test forward
10
11#include <utility>
12
13#include "test_macros.h"
14
15struct A
16{
17};
18
19A source() {return A();}
20const A csource() {return A();}
21
22int main(int, char**)
23{
24 {
25 (void)std::forward<A&>(t: source()); // expected-note {{requested here}}
26 // expected-error-re@*:* 1 {{static assertion failed{{.*}}cannot forward an rvalue as an lvalue}}
27 }
28 {
29 const A ca = A();
30 std::forward<A&>(ca); // expected-error {{no matching function for call to 'forward'}}
31 }
32 {
33 std::forward<A&>(csource()); // expected-error {{no matching function for call to 'forward'}}
34 }
35 {
36 const A ca = A();
37 std::forward<A>(ca); // expected-error {{no matching function for call to 'forward'}}
38 }
39 {
40 std::forward<A>(csource()); // expected-error {{no matching function for call to 'forward'}}
41 }
42 {
43 A a;
44 std::forward(a); // expected-error {{no matching function for call to 'forward'}}
45 }
46
47 return 0;
48}
49

source code of libcxx/test/std/utilities/utility/forward/forward.verify.cpp