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// UNSUPPORTED: no-threads
10
11// <future>
12
13// class future<R>
14
15// future(const future&) = delete;
16
17#include <future>
18
19void f() {
20 {
21 std::future<int> f0;
22 std::future<int> f = f0; // expected-error {{call to deleted constructor of 'std::future<int>'}}
23 }
24 {
25 std::future<int &> f0;
26 std::future<int &> f = f0; // expected-error {{call to deleted constructor of 'std::future<int &>'}}
27 }
28 {
29 std::future<void> f0;
30 std::future<void> f = f0; // expected-error {{call to deleted constructor of 'std::future<void>'}}
31 }
32}
33

source code of libcxx/test/std/thread/futures/futures.unique_future/copy_ctor.verify.cpp