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8868286e | 1 | // { dg-options "-std=gnu++11" } |
3b7d65ec | 2 | |
f1717362 | 3 | // Copyright (C) 2008-2016 Free Software Foundation, Inc. |
3b7d65ec | 4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
3b7d65ec | 9 | // any later version. |
10 | ||
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | ||
16 | // You should have received a copy of the GNU General Public License along | |
6bc9506f | 17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
3b7d65ec | 19 | |
20 | // 20.8.13.4 Template class owner_less [util.smartptr.ownerless] | |
21 | ||
22 | #include <memory> | |
23 | #include <algorithm> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | struct A { }; | |
27 | ||
28 | struct B { A a[2]; }; | |
29 | ||
30 | // 20.8.13.4 Template class owner_less [util.smartptr.ownerless] | |
31 | ||
32 | int | |
33 | test01() | |
34 | { | |
9ad39aef | 35 | bool test __attribute__((unused)) = true; |
36 | ||
37 | // test empty shared_ptrs compare equivalent | |
38 | std::owner_less<std::shared_ptr<A>> less; | |
39 | std::owner_less<std::weak_ptr<A>> wless; | |
40 | std::shared_ptr<A> p1; | |
41 | std::shared_ptr<A> p2; | |
42 | VERIFY( !less(p1, p2) && !less(p2, p1) ); | |
43 | std::weak_ptr<A> p3; | |
44 | VERIFY( !less(p1, p3) && !less(p3, p1) ); | |
45 | VERIFY( !wless(p1, p3) && !wless(p3, p1) ); | |
46 | return 0; | |
3b7d65ec | 47 | } |
48 | ||
49 | ||
50 | // Construction from pointer | |
51 | int | |
52 | test02() | |
53 | { | |
9ad39aef | 54 | bool test __attribute__((unused)) = true; |
55 | ||
3b7d65ec | 56 | std::owner_less<std::shared_ptr<A>> less; |
57 | std::owner_less<std::weak_ptr<A>> wless; | |
58 | ||
59 | std::shared_ptr<A> empty; | |
60 | ||
61 | std::shared_ptr<A> a1(new A); | |
62 | VERIFY( less(empty, a1) || less(a1, empty) ); | |
63 | ||
64 | std::shared_ptr<A> a2(new A); | |
65 | VERIFY( less(a1, a2) || less(a2, a1) ); | |
66 | ||
67 | std::weak_ptr<A> w1(a1); | |
68 | VERIFY( !less(a1, w1) && !less(w1, a1) ); | |
69 | ||
70 | std::weak_ptr<A> w2(a2); | |
71 | VERIFY( wless(w1, w2) || wless(w2, w1) ); | |
72 | ||
73 | a1.reset(); | |
74 | VERIFY( !less(empty, a1) && !less(a1, empty) ); | |
75 | VERIFY( less(a1, w1) || less(w1, a1) ); | |
76 | ||
77 | a2.reset(); | |
78 | VERIFY( !less(a2, a1) && !less(a1, a2) ); | |
79 | ||
80 | return 0; | |
81 | } | |
82 | ||
83 | // aliasing | |
84 | int | |
85 | test03() | |
86 | { | |
9ad39aef | 87 | bool test __attribute__((unused)) = true; |
88 | ||
3b7d65ec | 89 | std::owner_less<std::shared_ptr<A>> less; |
90 | std::owner_less<std::weak_ptr<A>> wless; | |
91 | ||
92 | std::shared_ptr<B> b(new B); | |
93 | std::shared_ptr<A> a0(b, &b->a[0]); | |
94 | std::shared_ptr<A> a1(b, &b->a[1]); | |
95 | // values are different but owners are equivalent: | |
96 | VERIFY( a0 < a1 && !less(a0, a1) && !less(a1, a0) ); | |
97 | ||
98 | std::weak_ptr<A> w0(a0); | |
99 | std::weak_ptr<A> w1(a1); | |
100 | VERIFY( !wless(w0, w1) && !wless(w1, w0) ); | |
101 | VERIFY( !less(a0, w1) && !less(w1, a0) ); | |
102 | VERIFY( !wless(w0, a1) && !wless(a1, w0) ); | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | // strict weak ordering | |
108 | int | |
109 | test04() | |
110 | { | |
9ad39aef | 111 | bool test __attribute__((unused)) = true; |
112 | ||
3b7d65ec | 113 | std::owner_less<std::shared_ptr<A>> less; |
114 | ||
115 | std::shared_ptr<A> a[3]; | |
116 | a[0].reset(new A); | |
117 | a[1].reset(new A); | |
118 | a[2].reset(new A); | |
119 | std::sort(a, a+3, less); | |
120 | VERIFY( !less(a[0], a[0]) ); | |
121 | VERIFY( less(a[0], a[1]) && !less(a[1], a[0]) ); | |
122 | VERIFY( less(a[0], a[1]) && less(a[1], a[2]) && less(a[0], a[2]) ); | |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
127 | int | |
128 | main() | |
129 | { | |
130 | test01(); | |
131 | test02(); | |
132 | test03(); | |
133 | test04(); | |
134 | return 0; | |
135 | } |