libstdc++-v3/testsuite/20_util/shared_ptr/cons/pointer.cc

   1 // { dg-options "-std=gnu++0x" }
   2
   3 // Copyright (C) 2005, 2006, 2007, 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 struct B : A { };
  27
  28
  29 // 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const]
  30
  31 // Construction from pointer
  32
  33 int
  34 test01()
  35 {
  36   bool test __attribute__((unused)) = true;
  37
  38   A * const a = 0;
  39   std::shared_ptr<A> p(a);
  40   VERIFY( p.get() == 0 );
  41   VERIFY( p.use_count() == 1 );
  42
  43   return 0;
  44 }
  45
  46 int
  47 test02()
  48 {
  49   bool test __attribute__((unused)) = true;
  50
  51   A * const a = new A;
  52   std::shared_ptr<A> p(a);
  53   VERIFY( p.get() == a );
  54   VERIFY( p.use_count() == 1 );
  55
  56   return 0;
  57 }
  58
  59
  60 int
  61 test03()
  62 {
  63   bool test __attribute__((unused)) = true;
  64
  65   B * const b = new B;
  66   std::shared_ptr<A> p(b);
  67   VERIFY( p.get() == b );
  68   VERIFY( p.use_count() == 1 );
  69
  70   return 0;
  71 }
  72
  73 int
  74 main()
  75 {
  76   test01();
  77   test02();
  78   test02();
  79   return 0;
  80 }