1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++98, c++03
// UNSUPPORTED: libcpp-has-no-threads, libcpp-no-exceptions
// <future>
// class promise<R>
// void promise::set_value(R&& r);
#include <future>
#include <memory>
#include <cassert>
struct A
{
A() {}
A(const A&) = delete;
A(A&&) {throw 9;}
};
int main()
{
{
typedef std::unique_ptr<int> T;
T i(new int(3));
std::promise<T> p;
std::future<T> f = p.get_future();
p.set_value(std::move(i));
assert(*f.get() == 3);
try
{
p.set_value(std::move(i));
assert(false);
}
catch (const std::future_error& e)
{
assert(e.code() == make_error_code(std::future_errc::promise_already_satisfied));
}
}
{
typedef A T;
T i;
std::promise<T> p;
std::future<T> f = p.get_future();
try
{
p.set_value(std::move(i));
assert(false);
}
catch (int j)
{
assert(j == 9);
}
}
}
|
