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 promise<R>
13 
14 // promise(const promise&) = delete;
15 
16 #include <future>
17 #include <cassert>
18 
19 #include "../test_allocator.h"
20 
main()21 int main()
22 {
23     assert(test_alloc_base::count == 0);
24     {
25         std::promise<int> p0(std::allocator_arg, test_allocator<int>());
26         std::promise<int> p(p0);
27         assert(test_alloc_base::count == 1);
28         std::future<int> f = p.get_future();
29         assert(test_alloc_base::count == 1);
30         assert(f.valid());
31         try
32         {
33             f = p0.get_future();
34             assert(false);
35         }
36         catch (const std::future_error& e)
37         {
38             assert(e.code() == make_error_code(std::future_errc::no_state));
39         }
40         assert(test_alloc_base::count == 1);
41     }
42     assert(test_alloc_base::count == 0);
43     {
44         std::promise<int&> p0(std::allocator_arg, test_allocator<int>());
45         std::promise<int&> p(p0);
46         assert(test_alloc_base::count == 1);
47         std::future<int&> f = p.get_future();
48         assert(test_alloc_base::count == 1);
49         assert(f.valid());
50         try
51         {
52             f = p0.get_future();
53             assert(false);
54         }
55         catch (const std::future_error& e)
56         {
57             assert(e.code() == make_error_code(std::future_errc::no_state));
58         }
59         assert(test_alloc_base::count == 1);
60     }
61     assert(test_alloc_base::count == 0);
62     {
63         std::promise<void> p0(std::allocator_arg, test_allocator<void>());
64         std::promise<void> p(p0);
65         assert(test_alloc_base::count == 1);
66         std::future<void> f = p.get_future();
67         assert(test_alloc_base::count == 1);
68         assert(f.valid());
69         try
70         {
71             f = p0.get_future();
72             assert(false);
73         }
74         catch (const std::future_error& e)
75         {
76             assert(e.code() == make_error_code(std::future_errc::no_state));
77         }
78         assert(test_alloc_base::count == 1);
79     }
80     assert(test_alloc_base::count == 0);
81 }
82