libstdc++-v3/testsuite/tr1/2_general_utilities/enable_shared_from_this/not_shared2.cc

   1 // Copyright (C) 2005-2024 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 // 2.2.5 Template class enable_shared_from_this [tr.util.smartptr.enab]
  19
  20 #include <tr1/memory>
  21 #include <testsuite_hooks.h>
  22
  23 struct X : public std::tr1::enable_shared_from_this<X>
  24 {
  25 };
  26
  27 int
  28 test01()
  29 {
  30   std::tr1::shared_ptr<X> p(new X);
  31
  32   X x(*p);  // copy of shared object should not be shared
  33
  34   try
  35     {
  36       std::tr1::shared_ptr<X> p = x.shared_from_this();
  37       VERIFY( false );
  38     }
  39   catch (const std::tr1::bad_weak_ptr&)
  40     {
  41       // Expected.
  42       VERIFY( true );
  43     }
  44   catch (...)
  45     {
  46       // Failed.
  47       VERIFY( false );
  48     }
  49
  50   return 0;
  51 }
  52
  53 int
  54 main()
  55 {
  56   test01();
  57   return 0;
  58 }