libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/cons/pointer.cc

   1 // Copyright (C) 2005-2016 Free Software Foundation, Inc.
   2 //
   3 // This file is part of the GNU ISO C++ Library.  This library is free
   4 // software; you can redistribute it and/or modify it under the
   5 // terms of the GNU General Public License as published by the
   6 // Free Software Foundation; either version 3, or (at your option)
   7 // any later version.
   8
   9 // This library is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13
  14 // You should have received a copy of the GNU General Public License along
  15 // with this library; see the file COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
  19
  20 #include <tr1/memory>
  21 #include <testsuite_hooks.h>
  22
  23 struct A { };
  24 struct B : A { };
  25
  26
  27 // 2.2.3.1 shared_ptr constructors [tr.util.smartptr.shared.const]
  28
  29 // Construction from pointer
  30
  31 int
  32 test01()
  33 {
  34   bool test __attribute__((unused)) = true;
  35
  36   A * const a = 0;
  37   std::tr1::shared_ptr<A> p(a);
  38   VERIFY( p.get() == 0 );
  39   VERIFY( p.use_count() == 1 );
  40
  41   return 0;
  42 }
  43
  44 int
  45 test02()
  46 {
  47   bool test __attribute__((unused)) = true;
  48
  49   A * const a = new A;
  50   std::tr1::shared_ptr<A> p(a);
  51   VERIFY( p.get() == a );
  52   VERIFY( p.use_count() == 1 );
  53
  54   return 0;
  55 }
  56
  57
  58 int
  59 test03()
  60 {
  61   bool test __attribute__((unused)) = true;
  62
  63   B * const b = new B;
  64   std::tr1::shared_ptr<A> p(b);
  65   VERIFY( p.get() == b );
  66   VERIFY( p.use_count() == 1 );
  67
  68   return 0;
  69 }
  70
  71 int
  72 main()
  73 {
  74   test01();
  75   test02();
  76   test03();
  77   return 0;
  78 }