gomp-20050608-branch/libstdc++-v3/testsuite/tr1/2_general_utilities/memory/shared_ptr/modifiers/reset.cc

   1 // Copyright (C) 2005 Free Software Foundation
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 2, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  17 // USA.
  18
  19 // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
  20
  21 #include <tr1/memory>
  22 #include <testsuite_hooks.h>
  23
  24 struct A { };
  25 struct B : A { };
  26 struct D
  27 {
  28   void operator()(B* p) { delete p; ++delete_count; }
  29   static long delete_count;
  30 };
  31 long D::delete_count = 0;
  32
  33 // 2.2.3.4 shared_ptr modifiers [tr.util.smartptr.shared.mod]
  34
  35 // reset
  36 int
  37 test01()
  38 {
  39   bool test __attribute__((unused)) = true;
  40
  41   A * const a = new A;
  42   std::tr1::shared_ptr<A> p1(a);
  43   std::tr1::shared_ptr<A> p2(p1);
  44   p1.reset();
  45   VERIFY( p1.get() == 0 );
  46   VERIFY( p2.get() == a );
  47
  48   return 0;
  49 }
  50
  51 int
  52 test02()
  53 {
  54   bool test __attribute__((unused)) = true;
  55
  56   A * const a = new A;
  57   B * const b = new B;
  58   std::tr1::shared_ptr<A> p1(a);
  59   std::tr1::shared_ptr<A> p2(p1);
  60   p1.reset(b);
  61   VERIFY( p1.get() == b );
  62   VERIFY( p2.get() == a );
  63
  64   return 0;
  65 }
  66
  67 int
  68 test03()
  69 {
  70   bool test __attribute__((unused)) = true;
  71
  72   {
  73     std::tr1::shared_ptr<A> p1;
  74     p1.reset(new B, D());
  75   }
  76   VERIFY( D::delete_count == 1 );
  77
  78   return 0;
  79 }
  80
  81 int
  82 main()
  83 {
  84   test01();
  85   test02();
  86   test03();
  87   return 0;
  88 }