1 // { dg-do run { target c++11 } }
2 // { dg-options "-g -O0" }
3 
4 // Copyright (C) 2012-2021 Free Software Foundation, Inc.
5 //
6 // This file is part of the GNU ISO C++ Library.  This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
10 // any later version.
11 
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 // GNU General Public License for more details.
16 
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3.  If not see
19 // <http://www.gnu.org/licenses/>.
20 
21 #include <memory>
22 #include <iostream>
23 
24 template<class T>
25 void
placeholder(const T & s)26 placeholder(const T &s)
27 {
28   std::cout << s;
29 }
30 
31 template<class T>
32 void
use(const T & p)33 use(const T &p)
34 {
35   placeholder(&p);
36 }
37 
operator ()deleter38 struct deleter { void operator()(int*) {} };
39 
make(uintptr_t p)40 std::shared_ptr<int> make(uintptr_t p)
41 {
42   return std::shared_ptr<int>(reinterpret_cast<int*>(p), deleter());
43 }
44 
45 int
main()46 main()
47 {
48   typedef std::shared_ptr<int> shared;
49   typedef std::weak_ptr<int> weak;
50 
51   shared esp;
52 // { dg-final { note-test esp "std::shared_ptr<int> (empty) = {get() = 0x0}" } }
53   weak ewp1;
54 // { dg-final { note-test ewp1 "std::weak_ptr<int> (empty) = {get() = 0x0}" } }
55   weak ewp2 = esp;
56 // { dg-final { note-test ewp2 "std::weak_ptr<int> (empty) = {get() = 0x0}" } }
57 
58   shared sp1 = make(0x12345678);
59   shared sp2 = sp1;
60 // { dg-final { note-test sp1 "std::shared_ptr<int> (use count 2, weak count 0) = {get() = 0x12345678}" } }
61 
62   shared sp3 = make(0x12344321);
63   weak sp4 = sp3;
64   weak wp1 = sp3;
65 // { dg-final { note-test wp1 "std::weak_ptr<int> (use count 1, weak count 2) = {get() = 0x12344321}" } }
66 
67   shared sp5 = make(0x56788765);
68   weak wp2 = sp5;
69   sp5.reset();
70 // { dg-final { note-test wp2 "std::weak_ptr<int> (expired, weak count 1) = {get() = 0x56788765}" } }
71 
72   placeholder(""); // Mark SPOT
73   use(esp);
74   use(ewp1);
75   use(ewp2);
76   use(sp1);
77   use(wp1);
78   use(wp2);
79 
80   std::cout << "\n";
81   return 0;
82 }
83 
84 // { dg-final { gdb-test SPOT } }
85