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// UNSUPPORTED: c++03
11
12// <future>
13
14// class promise<R>
15
16// void promise::set_value(const R& r);
17
18#include <future>
19#include <cassert>
20
21#include "test_macros.h"
22
23struct A
24{
25 A() {}
26 A(const A&) {
27 TEST_THROW(10);
28 }
29};
30
31int main(int, char**)
32{
33 {
34 typedef int T;
35 T i = 3;
36 std::promise<T> p;
37 std::future<T> f = p.get_future();
38 p.set_value(i);
39 ++i;
40 assert(f.get() == 3);
41#ifndef TEST_HAS_NO_EXCEPTIONS
42 --i;
43 try
44 {
45 p.set_value(i);
46 assert(false);
47 }
48 catch (const std::future_error& e)
49 {
50 assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
51 }
52#endif
53 }
54 {
55 typedef A T;
56 T i;
57 std::promise<T> p;
58 std::future<T> f = p.get_future();
59#ifndef TEST_HAS_NO_EXCEPTIONS
60 try
61 {
62 p.set_value(i);
63 assert(false);
64 }
65 catch (int j)
66 {
67 assert(j == 10);
68 }
69#endif
70 }
71
72 return 0;
73}
74

source code of libcxx/test/std/thread/futures/futures.promise/set_value_const.pass.cpp