1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
// { dg-options "-std=gnu++11" }
// Copyright (C) 2008-2015 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
#include <memory>
#include <algorithm>
#include <testsuite_hooks.h>
struct A { };
struct B { A a[2]; };
// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
int
test01()
{
bool test __attribute__((unused)) = true;
// test empty shared_ptrs compare equivalent
std::owner_less<std::shared_ptr<A>> less;
std::owner_less<std::weak_ptr<A>> wless;
std::shared_ptr<A> p1;
std::shared_ptr<A> p2;
VERIFY( !less(p1, p2) && !less(p2, p1) );
std::weak_ptr<A> p3;
VERIFY( !less(p1, p3) && !less(p3, p1) );
VERIFY( !wless(p1, p3) && !wless(p3, p1) );
return 0;
}
// Construction from pointer
int
test02()
{
bool test __attribute__((unused)) = true;
std::owner_less<std::shared_ptr<A>> less;
std::owner_less<std::weak_ptr<A>> wless;
std::shared_ptr<A> empty;
std::shared_ptr<A> a1(new A);
VERIFY( less(empty, a1) || less(a1, empty) );
std::shared_ptr<A> a2(new A);
VERIFY( less(a1, a2) || less(a2, a1) );
std::weak_ptr<A> w1(a1);
VERIFY( !less(a1, w1) && !less(w1, a1) );
std::weak_ptr<A> w2(a2);
VERIFY( wless(w1, w2) || wless(w2, w1) );
a1.reset();
VERIFY( !less(empty, a1) && !less(a1, empty) );
VERIFY( less(a1, w1) || less(w1, a1) );
a2.reset();
VERIFY( !less(a2, a1) && !less(a1, a2) );
return 0;
}
// aliasing
int
test03()
{
bool test __attribute__((unused)) = true;
std::owner_less<std::shared_ptr<A>> less;
std::owner_less<std::weak_ptr<A>> wless;
std::shared_ptr<B> b(new B);
std::shared_ptr<A> a0(b, &b->a[0]);
std::shared_ptr<A> a1(b, &b->a[1]);
// values are different but owners are equivalent:
VERIFY( a0 < a1 && !less(a0, a1) && !less(a1, a0) );
std::weak_ptr<A> w0(a0);
std::weak_ptr<A> w1(a1);
VERIFY( !wless(w0, w1) && !wless(w1, w0) );
VERIFY( !less(a0, w1) && !less(w1, a0) );
VERIFY( !wless(w0, a1) && !wless(a1, w0) );
return 0;
}
// strict weak ordering
int
test04()
{
bool test __attribute__((unused)) = true;
std::owner_less<std::shared_ptr<A>> less;
std::shared_ptr<A> a[3];
a[0].reset(new A);
a[1].reset(new A);
a[2].reset(new A);
std::sort(a, a+3, less);
VERIFY( !less(a[0], a[0]) );
VERIFY( less(a[0], a[1]) && !less(a[1], a[0]) );
VERIFY( less(a[0], a[1]) && less(a[1], a[2]) && less(a[0], a[2]) );
return 0;
}
int
main()
{
test01();
test02();
test03();
test04();
return 0;
}
|
