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

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2007, 2008, 2009 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 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 // 20.6.6.2 Template class shared_ptr [util.smartptr.shared]
  21
  22 #include <memory>
  23 #include <testsuite_hooks.h>
  24
  25 struct A
  26 {
  27   A(int i, double d, char c = '\0') : i(i), d(d), c(c) { ++ctor_count; }
  28   explicit A(int i) : i(i), d(), c() { ++ctor_count; }
  29   A() : i(), d(), c() { ++ctor_count; }
  30   ~A() { ++dtor_count; }
  31   int i;
  32   double d;
  33   char c;
  34   static int ctor_count;
  35   static int dtor_count;
  36 };
  37 int A::ctor_count = 0;
  38 int A::dtor_count = 0;
  39
  40 struct reset_count_struct
  41 {
  42   ~reset_count_struct()
  43   {
  44     A::ctor_count = 0;
  45     A::dtor_count = 0;
  46   }
  47 };
  48
  49 // 20.6.6.2.6 shared_ptr creation [util.smartptr.shared.create]
  50
  51 void
  52 test01()
  53 {
  54   bool test __attribute__((unused)) = true;
  55   reset_count_struct __attribute__((unused)) reset;
  56
  57   {
  58     std::shared_ptr<A> p1 = std::make_shared<A>();
  59     VERIFY( p1.get() != 0 );
  60     VERIFY( p1.use_count() == 1 );
  61     VERIFY( A::ctor_count == 1 );
  62   }
  63   VERIFY( A::ctor_count == A::dtor_count );
  64 }
  65
  66 void
  67 test02()
  68 {
  69   bool test __attribute__((unused)) = true;
  70   reset_count_struct __attribute__((unused)) reset;
  71
  72   std::shared_ptr<A> p1;
  73
  74   p1 = std::make_shared<A>(1);
  75   VERIFY( A::ctor_count == 1 );
  76
  77   p1 = std::make_shared<A>(1, 2.0);
  78   VERIFY( A::ctor_count == 2 );
  79   VERIFY( A::dtor_count == 1 );
  80
  81   p1 = std::make_shared<A>(1, 2.0, '3');
  82   VERIFY( A::ctor_count == 3 );
  83   VERIFY( A::dtor_count == 2 );
  84   VERIFY( p1->i == 1 );
  85   VERIFY( p1->d == 2.0 );
  86   VERIFY( p1->c == '3' );
  87
  88   p1 = std::shared_ptr<A>();
  89   VERIFY( A::ctor_count == A::dtor_count );
  90 }
  91
  92 int
  93 main()
  94 {
  95   test01();
  96   test02();
  97 }