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a945c346 | 1 | // // Copyright (C) 2017-2024 Free Software Foundation, Inc. |
a5cee048 JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-do compile { target c++17 } } | |
19 | ||
20 | #include <future> | |
21 | ||
22 | template<typename T, typename U> struct require_same; | |
23 | template<typename T> struct require_same<T, T> { using type = void; }; | |
24 | ||
25 | template<typename T, typename U> | |
26 | typename require_same<T, U>::type | |
27 | check_type(U&) { } | |
28 | ||
29 | void f0v(); | |
30 | void f0vn() noexcept; | |
31 | int f0i(); | |
32 | int f0in() noexcept; | |
33 | long f1l(int&); | |
34 | long f1ln(double*) noexcept; | |
35 | ||
36 | void | |
37 | test01() | |
38 | { | |
39 | std::packaged_task task1{f0v}; | |
40 | check_type<std::packaged_task<void()>>(task1); | |
41 | ||
42 | std::packaged_task task2{f0vn}; | |
43 | check_type<std::packaged_task<void()>>(task2); | |
44 | ||
45 | std::packaged_task task3{f0i}; | |
46 | check_type<std::packaged_task<int()>>(task3); | |
47 | ||
48 | std::packaged_task task4{f0in}; | |
49 | check_type<std::packaged_task<int()>>(task4); | |
50 | ||
51 | std::packaged_task task5{f1l}; | |
52 | check_type<std::packaged_task<long(int&)>>(task5); | |
53 | ||
54 | std::packaged_task task6{f1ln}; | |
55 | check_type<std::packaged_task<long(double*)>>(task6); | |
56 | ||
57 | std::packaged_task task5a{std::move(task5)}; | |
58 | check_type<std::packaged_task<long(int&)>>(task5a); | |
59 | ||
60 | std::packaged_task task6a{std::move(task6)}; | |
61 | check_type<std::packaged_task<long(double*)>>(task6a); | |
62 | } | |
63 | ||
64 | struct X { | |
65 | int operator()(const short&, void*); | |
66 | }; | |
67 | ||
68 | struct Y { | |
69 | void operator()(int) const & noexcept; | |
70 | }; | |
71 | ||
72 | void | |
73 | test02() | |
74 | { | |
75 | X x; | |
76 | std::packaged_task task1{x}; | |
77 | check_type<std::packaged_task<int(const short&, void*)>>(task1); | |
78 | ||
79 | Y y; | |
80 | std::packaged_task task2{y}; | |
81 | check_type<std::packaged_task<void(int)>>(task2); | |
82 | ||
83 | std::packaged_task task3{[&x](float) -> X& { return x; }}; | |
84 | check_type<std::packaged_task<X&(float)>>(task3); | |
85 | } |