libstdc++-v3/testsuite/20_util/shared_ptr/creation/make.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2007, 2008 Free Software Foundation
   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 2, 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 COPYING.  If not, write to the Free
  18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  19 // USA.
  20
  21 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
  22
  23 #include <memory>
  24 #include <testsuite_hooks.h>
  25
  26 struct A
  27 {
  28   A(int i, double d, char c = '\0') : i(i), d(d), c(c) { ++ctor_count; }
  29   explicit A(int i) : i(i), d(), c() { ++ctor_count; }
  30   A() : i(), d(), c() { ++ctor_count; }
  31   ~A() { ++dtor_count; }
  32   int i;
  33   double d;
  34   char c;
  35   static int ctor_count;
  36   static int dtor_count;
  37 };
  38 int A::ctor_count = 0;
  39 int A::dtor_count = 0;
  40
  41 struct reset_count_struct
  42 {
  43   ~reset_count_struct()
  44   {
  45     A::ctor_count = 0;
  46     A::dtor_count = 0;
  47   }
  48 };
  49
  50 // 20.6.6.2.6 shared_ptr creation [util.smartptr.shared.create]
  51
  52 void
  53 test01()
  54 {
  55   bool test __attribute__((unused)) = true;
  56   reset_count_struct __attribute__((unused)) reset;
  57
  58   {
  59     std::shared_ptr<A> p1 = std::make_shared<A>();
  60     VERIFY( p1.get() != 0 );
  61     VERIFY( p1.use_count() == 1 );
  62     VERIFY( A::ctor_count == 1 );
  63   }
  64   VERIFY( A::ctor_count == A::dtor_count );
  65 }
  66
  67 void
  68 test02()
  69 {
  70   bool test __attribute__((unused)) = true;
  71   reset_count_struct __attribute__((unused)) reset;
  72
  73   std::shared_ptr<A> p1;
  74
  75   p1 = std::make_shared<A>(1);
  76   VERIFY( A::ctor_count == 1 );
  77
  78   p1 = std::make_shared<A>(1, 2.0);
  79   VERIFY( A::ctor_count == 2 );
  80   VERIFY( A::dtor_count == 1 );
  81
  82   p1 = std::make_shared<A>(1, 2.0, '3');
  83   VERIFY( A::ctor_count == 3 );
  84   VERIFY( A::dtor_count == 2 );
  85   VERIFY( p1->i == 1 );
  86   VERIFY( p1->d == 2.0 );
  87   VERIFY( p1->c == '3' );
  88
  89   p1 = std::shared_ptr<A>();
  90   VERIFY( A::ctor_count == A::dtor_count );
  91 }
  92
  93 int
  94 main()
  95 {
  96   test01();
  97   test02();
  98 }