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52066eae | 1 | // { dg-do run { target c++11 } } |
7cc9022f | 2 | // { dg-require-effective-target hosted } |
aaf0ca6f | 3 | |
a945c346 | 4 | // Copyright (C) 2008-2024 Free Software Foundation, Inc. |
aaf0ca6f JW |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
aaf0ca6f JW |
10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
aaf0ca6f | 20 | |
640cbe76 | 21 | // 20.7.12.2 Template class shared_ptr [util.smartptr.shared] |
aaf0ca6f JW |
22 | |
23 | #include <memory> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | struct A { }; | |
aaf0ca6f | 27 | |
640cbe76 JW |
28 | struct D { |
29 | void operator()(A* p) const { delete p; ++count; } | |
30 | static int count; | |
31 | }; | |
aaf0ca6f | 32 | |
640cbe76 JW |
33 | int D::count = 0; |
34 | ||
35 | // 20.7.12.2.1 shared_ptr constructors [util.smartptr.shared.const] | |
36 | ||
37 | // Construction from unique_ptr | |
098aac94 | 38 | void |
aaf0ca6f JW |
39 | test01() |
40 | { | |
640cbe76 JW |
41 | std::unique_ptr<A, D> up(new A, D()); |
42 | { | |
43 | std::shared_ptr<A> sp(std::move(up)); | |
44 | VERIFY( up.get() == 0 ); | |
45 | VERIFY( sp.get() != 0 ); | |
46 | VERIFY( sp.use_count() == 1 ); | |
47 | } | |
48 | VERIFY( D::count == 1 ); | |
098aac94 | 49 | } |
aaf0ca6f | 50 | |
098aac94 JW |
51 | void |
52 | test02() | |
53 | { | |
098aac94 JW |
54 | D::count = 0; |
55 | std::unique_ptr<A, D> up; | |
56 | { | |
57 | std::shared_ptr<A> sp = std::move(up); | |
58 | } | |
59 | VERIFY( D::count == 0 ); // LWG 2415 | |
aaf0ca6f JW |
60 | } |
61 | ||
5edc0c15 JW |
62 | void |
63 | test03() | |
64 | { | |
65 | struct D | |
66 | { | |
67 | D() = default; | |
68 | D(const D&) = delete; // not copyable or movable | |
69 | void operator()(int* p) const { delete p; } | |
70 | }; | |
71 | ||
72 | using namespace std; | |
73 | static_assert( ! is_constructible<shared_ptr<int>, unique_ptr<int, D>>(), | |
74 | "Constraints: is_move_constructible_v<D> is true" ); | |
75 | } | |
76 | ||
640cbe76 | 77 | int |
aaf0ca6f JW |
78 | main() |
79 | { | |
80 | test01(); | |
098aac94 | 81 | test02(); |
5edc0c15 | 82 | test03(); |
aaf0ca6f | 83 | } |