1// { dg-options "-std=gnu++11" }
2
3// Copyright (C) 2010-2015 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// 20.9.11.2 Class template shared_ptr [util.smartptr.shared]
21
22#include <memory>
23#include <cstddef>
24#include <testsuite_hooks.h>
25#include <testsuite_allocator.h>
26
27// 20.9.11.2.1 shared_ptr constructors [util.smartptr.shared.const]
28
29// Construction from nullptr
30
31struct deleter
32{
33  int count;
34  deleter() : count(0) { }
35  void operator()(std::nullptr_t) { ++count; }
36  void operator()(int*) const { throw "wrong type passed to deleter"; }
37};
38
39void
40test01()
41{
42  bool test __attribute__((unused)) = true;
43
44  std::shared_ptr<int> p = nullptr;
45  VERIFY( p.get() == nullptr );
46  VERIFY( p.use_count() == 0 );
47
48}
49
50void
51test02()
52{
53  bool test __attribute__((unused)) = true;
54
55  deleter d;
56  std::shared_ptr<int> p(nullptr, std::ref(d));
57  VERIFY( p.get() == nullptr );
58  VERIFY( p.use_count() == 1 );
59
60  p = nullptr;
61  VERIFY( p.use_count() == 0 );
62  VERIFY( d.count == 1 );
63}
64
65
66void
67test03()
68{
69  bool test __attribute__((unused)) = true;
70
71  deleter d;
72  __gnu_test::tracker_allocator<int> a;
73  std::shared_ptr<int> p(nullptr, std::ref(d), a);
74  VERIFY( p.get() == nullptr );
75  VERIFY( p.use_count() == 1 );
76
77  p = nullptr;
78  VERIFY( p.use_count() == 0 );
79  VERIFY( d.count == 1 );
80
81  typedef __gnu_test::tracker_allocator_counter c;
82  VERIFY( c::get_destruct_count() == c::get_construct_count() );
83  VERIFY( c::get_deallocation_count() == c::get_allocation_count() );
84}
85
86int
87main()
88{
89  test01();
90  test02();
91  test03();
92  return 0;
93}
94