libstdc++-v3/testsuite/20_util/shared_ptr/observers/get.cc

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2005-2018 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 // 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() : i() {}
  28   int i;
  29 };
  30
  31 // 20.6.6.2.5 shared_ptr observers [util.smartptr.shared.obs]
  32
  33 // get
  34 void
  35 test01()
  36 {
  37   A * const a = new A;
  38   const std::shared_ptr<A> p(a);
  39   VERIFY( p.get() == a );
  40 }
  41
  42 // operator*
  43 void
  44 test02()
  45 {
  46   A * const a = new A;
  47   const std::shared_ptr<A> p(a);
  48   VERIFY( &*p == a );
  49 }
  50
  51 // operator->
  52 void
  53 test03()
  54 {
  55   A * const a = new A;
  56   const std::shared_ptr<A> p(a);
  57   VERIFY( &p->i == &a->i );
  58 }
  59
  60 void
  61 test04()
  62 {
  63 #if !(defined _GLIBCXX_DEBUG && defined _GLIBCXX_DEBUG_PEDANTIC)
  64   std::shared_ptr<int> p;
  65   auto np = p.operator->();
  66   VERIFY( np == nullptr );
  67 #endif
  68 }
  69
  70 int
  71 main()
  72 {
  73   test01();
  74   test02();
  75   test03();
  76   test04();
  77   return 0;
  78 }