libstdc++-v3/testsuite/experimental/memory/shared_ptr/dest/dest.cc

   1 // { dg-do run { target c++14 } }
   2
   3 // Copyright (C) 2015-2017 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   ~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   ~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 struct D
  46 {
  47   void operator()(const B* p) { delete [] p; ++delete_count; }
  48   static long delete_count;
  49 };
  50 long D::delete_count = 0;
  51
  52 struct reset_count_struct
  53 {
  54   ~reset_count_struct()
  55     {
  56       A::ctor_count = 0;
  57       A::dtor_count = 0;
  58       B::ctor_count = 0;
  59       B::dtor_count = 0;
  60       D::delete_count = 0;
  61     }
  62 };
  63
  64 // 20.8.2.2.2 shared_ptr destructor
  65
  66 int
  67 test01()
  68 {
  69   reset_count_struct __attribute__((unused)) reset;
  70
  71   {
  72     std::experimental::shared_ptr<A[5]> a;
  73   }
  74   VERIFY( A::ctor_count == 0 );
  75   VERIFY( A::dtor_count == 0 );
  76   VERIFY( B::ctor_count == 0 );
  77   VERIFY( B::dtor_count == 0 );
  78   VERIFY( D::delete_count == 0 );
  79
  80   return 0;
  81 }
  82
  83 int
  84 test02()
  85 {
  86   reset_count_struct __attribute__((unused)) reset;
  87
  88   {
  89     std::experimental::shared_ptr<B[5]> a;
  90     a = std::experimental::shared_ptr<B[5]>(new B[5], D());
  91   }
  92   VERIFY( A::ctor_count == 5 );
  93   VERIFY( A::dtor_count == 5 );
  94   VERIFY( B::ctor_count == 5 );
  95   VERIFY( B::dtor_count == 5 );
  96   VERIFY( D::delete_count == 1 );
  97
  98   return 0;
  99 }
 100
 101 int
 102 test03()
 103 {
 104   reset_count_struct __attribute__((unused)) reset;
 105
 106   {
 107     std::experimental::shared_ptr<B[]> a;
 108     a = std::experimental::shared_ptr<B[5]>(new B[5], D());
 109   }
 110   VERIFY( A::ctor_count == 5 );
 111   VERIFY( A::dtor_count == 5 );
 112   VERIFY( B::ctor_count == 5 );
 113   VERIFY( B::dtor_count == 5 );
 114   VERIFY( D::delete_count == 1 );
 115
 116   return 0;
 117 }
 118
 119 int
 120 main()
 121 {
 122   test01();
 123   test02();
 124   test03();
 125   return 0;
 126 }