libstdc++-v3/testsuite/experimental/memory/shared_ptr/cons/copy_ctor.cc

   1 // { dg-do run { target c++14 } }
   2
   3 // Copyright (C) 2015-2016 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 // 8.2.1 Class template shared_ptr [memory.smartptr.shared]
  21
  22 #include <experimental/memory>
  23 #include <testsuite_hooks.h>
  24
  25 struct A
  26 {
  27   A() { ++ctor_count; }
  28   virtual ~A() { ++dtor_count; }
  29   static long ctor_count;
  30   static long dtor_count;
  31 };
  32 long A::ctor_count = 0;
  33 long A::dtor_count = 0;
  34
  35 struct B : A
  36 {
  37   B() { ++ctor_count; }
  38   virtual ~B() { ++dtor_count; }
  39   static long ctor_count;
  40   static long dtor_count;
  41 };
  42 long B::ctor_count = 0;
  43 long B::dtor_count = 0;
  44
  45 void deleter(A* p) { delete [] p; }
  46
  47 struct reset_count_struct
  48 {
  49   ~reset_count_struct()
  50     {
  51       A::ctor_count = 0;
  52       A::dtor_count = 0;
  53       B::ctor_count = 0;
  54       B::dtor_count = 0;
  55     }
  56 };
  57
  58 // 8.2.1.1 shared_ptr constructors [memory.smartptr.shared.const]
  59
  60 // Copy construction
  61
  62 int
  63 test01()
  64 {
  65   reset_count_struct __attribute__((unused)) reset;
  66   bool test __attribute__((unused)) = true;
  67
  68   std::experimental::shared_ptr<A[5]> a1;
  69   std::experimental::shared_ptr<A[5]> a2(a1);
  70   VERIFY( a2.use_count() == 0 );
  71   VERIFY( A::ctor_count == 0 );
  72   VERIFY( A::dtor_count == 0 );
  73   VERIFY( B::ctor_count == 0 );
  74   VERIFY( B::dtor_count == 0 );
  75
  76   return 0;
  77 }
  78
  79 int
  80 test02()
  81 {
  82   reset_count_struct __attribute__((unused)) reset;
  83   bool test __attribute__((unused)) = true;
  84
  85   std::experimental::shared_ptr<A[5]> a1(new A[5]);
  86   std::experimental::shared_ptr<A[5]> a2(a1);
  87   VERIFY( a2.use_count() == 2 );
  88   VERIFY( A::ctor_count == 5 );
  89   VERIFY( A::dtor_count == 0 );
  90   VERIFY( B::ctor_count == 0 );
  91   VERIFY( B::dtor_count == 0 );
  92
  93   return 0;
  94 }
  95
  96 int
  97 test03()
  98 {
  99   reset_count_struct __attribute__((unused)) reset;
 100   bool test __attribute__((unused)) = true;
 101
 102   std::experimental::shared_ptr<A[5]> a1(new A[5], &deleter);
 103   std::experimental::shared_ptr<A[5]> a2(a1);
 104   VERIFY( a2.use_count() == 2 );
 105   VERIFY( A::ctor_count == 5 );
 106   VERIFY( A::dtor_count == 0 );
 107   VERIFY( B::ctor_count == 0 );
 108   VERIFY( B::dtor_count == 0 );
 109
 110   return 0;
 111 }
 112
 113 int
 114 test04()
 115 {
 116   reset_count_struct __attribute__((unused)) reset;
 117   bool test __attribute__((unused)) = true;
 118
 119   std::experimental::shared_ptr<A[5]> a1(std::experimental::shared_ptr<A[5]>
 120                                           (new A[5]));
 121   VERIFY( a1.use_count() == 1 );
 122   VERIFY( A::ctor_count == 5 );
 123   VERIFY( A::dtor_count == 0 );
 124   VERIFY( B::ctor_count == 0 );
 125   VERIFY( B::dtor_count == 0 );
 126
 127   return 0;
 128 }
 129
 130 int
 131 test05()
 132 {
 133   reset_count_struct __attribute__((unused)) reset;
 134   bool test __attribute__((unused)) = true;
 135
 136   std::experimental::shared_ptr<A[5]> a1(new A[5]);
 137   std::experimental::shared_ptr<A[]> a2(a1);
 138
 139   VERIFY( a2.use_count() == 2 );
 140   VERIFY( a2.get() == a1.get() );
 141   VERIFY( A::ctor_count == 5 );
 142   VERIFY( A::dtor_count == 0 );
 143   VERIFY( B::ctor_count == 0 );
 144   VERIFY( B::dtor_count == 0 );
 145
 146   return 0;
 147 }
 148
 149 int
 150 test06()
 151 {
 152   reset_count_struct __attribute__((unused)) reset;
 153   bool test __attribute__((unused)) = true;
 154
 155   std::experimental::shared_ptr<B> a1(new B);
 156   std::experimental::shared_ptr<A> a2(a1);
 157
 158   VERIFY( a2.use_count() == 2 );
 159   VERIFY( a2.get() == a1.get() );
 160   VERIFY( A::ctor_count == 1 );
 161   VERIFY( A::dtor_count == 0 );
 162   VERIFY( B::ctor_count == 1 );
 163   VERIFY( B::dtor_count == 0 );
 164
 165   return 0;
 166 }
 167
 168 int
 169 main()
 170 {
 171   test01();
 172   test02();
 173   test03();
 174   test04();
 175   test05();
 176   test06();
 177   return 0;
 178 }