1 // { dg-do run { target c++11 } }
2 
3 // Copyright (C) 2005-2018 Free Software Foundation, Inc.
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
8 // Free Software Foundation; either version 3, or (at your option)
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
17 // with this library; see the file COPYING3.  If not see
18 // <http://www.gnu.org/licenses/>.
19 
20 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
21 
22 #include <memory>
23 #include <testsuite_hooks.h>
24 
25 struct A { };
26 
27 // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs]
28 
29 // conversion to bool
30 void
test01()31 test01()
32 {
33   const std::shared_ptr<A> p1;
34   VERIFY( static_cast<bool>(p1) == false );
35   const std::shared_ptr<A> p2(p1);
36   VERIFY( static_cast<bool>(p2) == false );
37 }
38 
39 void
test02()40 test02()
41 {
42   std::shared_ptr<A> p1(new A);
43   VERIFY( static_cast<bool>(p1) );
44   std::shared_ptr<A> p2(p1);
45   VERIFY( static_cast<bool>(p2) );
46   p1.reset();
47   VERIFY( !static_cast<bool>(p1) );
48   VERIFY( static_cast<bool>(p2) );
49 }
50 
51 void
test03()52 test03()
53 {
54   std::shared_ptr<A> p1(new A);
55   std::shared_ptr<A> p2(p1);
56   p2.reset(new A);
57   VERIFY( static_cast<bool>(p1) );
58   VERIFY( static_cast<bool>(p2) );
59 }
60 
61 
62 int
main()63 main()
64 {
65   test01();
66   test02();
67   test03();
68   return 0;
69 }
70