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5262c72a JW |
1 | // { dg-options "-std=gnu++0x" } |
2 | // { dg-require-cstdint "" } | |
3 | // { dg-require-gthreads "" } | |
4 | // { dg-require-atomic-builtins "" } | |
5 | ||
6 | // Copyright (C) 2010 Free Software Foundation | |
7 | // | |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | ||
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | // 30.6.6 Class template future [futures.unique_future] | |
24 | ||
25 | #include <future> | |
26 | #include <testsuite_hooks.h> | |
27 | ||
28 | // This test verifies behaviour which is encouraged by a non-normative note, | |
29 | // but not required. | |
30 | ||
31 | void | |
32 | test01() | |
33 | { | |
34 | bool test __attribute__((unused)) = true; | |
35 | ||
36 | std::promise<int> p; | |
37 | std::future<int> f = p.get_future(); | |
38 | p.set_value(0); | |
39 | f.get(); | |
40 | try | |
41 | { | |
42 | f.get(); | |
43 | VERIFY( false ); | |
44 | } | |
45 | catch (std::future_error& e) | |
46 | { | |
47 | VERIFY( e.code() == std::future_errc::no_state ); | |
48 | } | |
49 | } | |
50 | ||
51 | void | |
52 | test02() | |
53 | { | |
54 | bool test __attribute__((unused)) = true; | |
55 | ||
56 | std::promise<int&> p; | |
57 | std::future<int&> f = p.get_future(); | |
58 | int i = 0; | |
59 | p.set_value(i); | |
60 | f.get(); | |
61 | try | |
62 | { | |
63 | f.get(); | |
64 | VERIFY( false ); | |
65 | } | |
66 | catch (std::future_error& e) | |
67 | { | |
68 | VERIFY( e.code() == std::future_errc::no_state ); | |
69 | } | |
70 | } | |
71 | ||
72 | void | |
73 | test03() | |
74 | { | |
75 | bool test __attribute__((unused)) = true; | |
76 | ||
77 | std::promise<void> p; | |
78 | std::future<void> f = p.get_future(); | |
79 | p.set_value(); | |
80 | f.get(); | |
81 | try | |
82 | { | |
83 | f.get(); | |
84 | VERIFY( false ); | |
85 | } | |
86 | catch (std::future_error& e) | |
87 | { | |
88 | VERIFY( e.code() == std::future_errc::no_state ); | |
89 | } | |
90 | } | |
91 | ||
92 | int main() | |
93 | { | |
94 | test01(); | |
95 | test02(); | |
96 | test03(); | |
97 | ||
98 | return 0; | |
99 | } | |
100 |