1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <future>
11 
12 // class shared_future<R>
13 
14 // shared_future(shared_future&& rhs);
15 
16 #include <future>
17 #include <cassert>
18 
main()19 int main()
20 {
21     {
22         typedef int T;
23         std::promise<T> p;
24         std::shared_future<T> f0 = p.get_future();
25         std::shared_future<T> f = std::move(f0);
26         assert(!f0.valid());
27         assert(f.valid());
28     }
29     {
30         typedef int T;
31         std::shared_future<T> f0;
32         std::shared_future<T> f = std::move(f0);
33         assert(!f0.valid());
34         assert(!f.valid());
35     }
36     {
37         typedef int& T;
38         std::promise<T> p;
39         std::shared_future<T> f0 = p.get_future();
40         std::shared_future<T> f = std::move(f0);
41         assert(!f0.valid());
42         assert(f.valid());
43     }
44     {
45         typedef int& T;
46         std::shared_future<T> f0;
47         std::shared_future<T> f = std::move(f0);
48         assert(!f0.valid());
49         assert(!f.valid());
50     }
51     {
52         typedef void T;
53         std::promise<T> p;
54         std::shared_future<T> f0 = p.get_future();
55         std::shared_future<T> f = std::move(f0);
56         assert(!f0.valid());
57         assert(f.valid());
58     }
59     {
60         typedef void T;
61         std::shared_future<T> f0;
62         std::shared_future<T> f = std::move(f0);
63         assert(!f0.valid());
64         assert(!f.valid());
65     }
66 }
67