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

   1 // { dg-options "-std=gnu++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
  23 #include <experimental/memory>
  24 #include <testsuite_hooks.h>
  25
  26 struct A
  27 {
  28   A() { ++ctor_count; }
  29   virtual ~A() { ++dtor_count; }
  30   static long ctor_count;
  31   static long dtor_count;
  32 };
  33 long A::ctor_count = 0;
  34 long A::dtor_count = 0;
  35
  36 struct B : A
  37 {
  38   B() { ++ctor_count; }
  39   virtual ~B() { ++dtor_count; }
  40   static long ctor_count;
  41   static long dtor_count;
  42 };
  43 long B::ctor_count = 0;
  44 long B::dtor_count = 0;
  45
  46 struct reset_count_struct
  47 {
  48   ~reset_count_struct()
  49   {
  50     A::ctor_count = 0;
  51     A::dtor_count = 0;
  52     B::ctor_count = 0;
  53     B::dtor_count = 0;
  54   }
  55 };
  56
  57 // C++14 §20.8.2.2.3 shared_ptr assignment
  58
  59 void
  60 test01()
  61 {
  62   reset_count_struct __attribute__((unused)) reset;
  63   bool test __attribute__((unused)) = true;
  64
  65   std::experimental::shared_ptr<A[5]> a;
  66   std::experimental::shared_ptr<A[]> a1;
  67   std::experimental::shared_ptr<B[5]> a2;
  68
  69   a = std::experimental::shared_ptr<A[5]> ();
  70   VERIFY( a.get() == 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   a = std::experimental::shared_ptr<A[5]> (new A[5]);
  77   VERIFY( a.get() != 0 );
  78   VERIFY( A::ctor_count == 5 );
  79   VERIFY( A::dtor_count == 0 );
  80   VERIFY( B::ctor_count == 0 );
  81   VERIFY( B::dtor_count == 0 );
  82
  83   a1 = std::experimental::shared_ptr<A[5]> (new A[5]);
  84   VERIFY( a1.get() != 0 );
  85   VERIFY( A::ctor_count == 10 );
  86   VERIFY( A::dtor_count == 0 );
  87   VERIFY( B::ctor_count == 0 );
  88   VERIFY( B::dtor_count == 0 );
  89
  90   a2 = std::experimental::shared_ptr<B[5]> (new B[5]);
  91   VERIFY( a2.get() != 0 );
  92   VERIFY( A::ctor_count == 15 );
  93   VERIFY( A::dtor_count == 0 );
  94   VERIFY( B::ctor_count == 5 );
  95   VERIFY( B::dtor_count == 0 );
  96 }
  97
  98 void
  99 test02()
 100 {
 101   bool test __attribute__((unused)) = true;
 102
 103   std::experimental::shared_ptr<A[5]> p(new A[5]);
 104   std::experimental::shared_ptr<A[5]> p1;
 105   std::experimental::shared_ptr<A[]> p2;
 106
 107   p1 = p;
 108   VERIFY( p.get() == p1.get() );
 109
 110   p2 = p1;
 111   VERIFY( p1.get() == p2.get() );
 112 }
 113
 114 int
 115 main()
 116 {
 117   test01();
 118   test02();
 119   return 0;
 120 }