Files
clang-p2996/libcxx/test/std/utilities/utility/forward/forward.fail.cpp
Christopher Di Bella 6adbc83ee9 [libcxx][modularisation] moves <utility> content out of <type_traits>
Moves:

* `std::move`, `std::forward`, `std::declval`, and `std::swap` into
  `__utility/${FUNCTION_NAME}`.
* `std::swap_ranges` and `std::iter_swap` into
  `__algorithm/${FUNCTION_NAME}`

Differential Revision: https://reviews.llvm.org/D103734
2021-06-24 17:57:29 +00:00

49 lines
1.3 KiB
C++

//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// test forward
#include <utility>
#include "test_macros.h"
struct A
{
};
A source() {return A();}
const A csource() {return A();}
int main(int, char**)
{
{
std::forward<A&>(source()); // expected-note {{requested here}}
// expected-error-re@*:* 1 {{static_assert failed{{.*}} "cannot forward an rvalue as an lvalue"}}
}
{
const A ca = A();
std::forward<A&>(ca); // expected-error {{no matching function for call to 'forward'}}
}
{
std::forward<A&>(csource()); // expected-error {{no matching function for call to 'forward'}}
}
{
const A ca = A();
std::forward<A>(ca); // expected-error {{no matching function for call to 'forward'}}
}
{
std::forward<A>(csource()); // expected-error {{no matching function for call to 'forward'}}
}
{
A a;
std::forward(a); // expected-error {{no matching function for call to 'forward'}}
}
return 0;
}