libstdc++-v3/testsuite/libstdc++-prettyprinters/shared_ptr.cc

   1 // { dg-do run }
   2 // { dg-options "-std=gnu++11 -g -O0" }
   3
   4 // Copyright (C) 2012-2015 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
  26 placeholder(const T &s)
  27 {
  28   std::cout << s;
  29 }
  30
  31 template<class T>
  32 void
  33 use(const T &p)
  34 {
  35   placeholder(&p);
  36 }
  37
  38 struct deleter { void operator()(int*) {} };
  39
  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
  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 (empty) 0x0" } }
  53   weak ewp1;
  54 // { dg-final { note-test ewp1 "std::weak_ptr (empty) 0x0" } }
  55   weak ewp2 = esp;
  56 // { dg-final { note-test ewp2 "std::weak_ptr (empty) 0x0" } }
  57
  58   shared sp1 = make(0x12345678);
  59   shared sp2 = sp1;
  60 // { dg-final { note-test sp1 "std::shared_ptr (count 2, weak 0) 0x12345678" } }
  61
  62   shared sp3 = make(0x12344321);
  63   weak sp4 = sp3;
  64   weak wp1 = sp3;
  65 // { dg-final { note-test wp1 "std::weak_ptr (count 1, weak 2) 0x12344321" } }
  66
  67   shared sp5 = make(0x56788765);
  68   weak wp2 = sp5;
  69   sp5.reset();
  70 // { dg-final { note-test wp2 "std::weak_ptr (expired, weak 1) 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   return 0;
  81 }
  82
  83 // { dg-final { gdb-test SPOT } }