1 // { dg-options "-std=gnu++0x" }
3 // Copyright (C) 2008, 2009 Free Software Foundation
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
8 // Free Software Foundation; either version 3, or (at your option)
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.
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
20 // 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
24 #include <testsuite_hooks.h>
30 // 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
35 bool test __attribute__((unused)) = true;
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) );
44 VERIFY( !less(p1, p3) && !less(p3, p1) );
45 VERIFY( !wless(p1, p3) && !wless(p3, p1) );
50 // Construction from pointer
54 bool test __attribute__((unused)) = true;
56 std::owner_less<std::shared_ptr<A>> less;
57 std::owner_less<std::weak_ptr<A>> wless;
59 std::shared_ptr<A> empty;
61 std::shared_ptr<A> a1(new A);
62 VERIFY( less(empty, a1) || less(a1, empty) );
64 std::shared_ptr<A> a2(new A);
65 VERIFY( less(a1, a2) || less(a2, a1) );
67 std::weak_ptr<A> w1(a1);
68 VERIFY( !less(a1, w1) && !less(w1, a1) );
70 std::weak_ptr<A> w2(a2);
71 VERIFY( wless(w1, w2) || wless(w2, w1) );
74 VERIFY( !less(empty, a1) && !less(a1, empty) );
75 VERIFY( less(a1, w1) || less(w1, a1) );
78 VERIFY( !less(a2, a1) && !less(a1, a2) );
87 bool test __attribute__((unused)) = true;
89 std::owner_less<std::shared_ptr<A>> less;
90 std::owner_less<std::weak_ptr<A>> wless;
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) );
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) );
107 // strict weak ordering
111 bool test __attribute__((unused)) = true;
113 std::owner_less<std::shared_ptr<A>> less;
115 std::shared_ptr<A> a[3];
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]) );