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

   1 // { dg-do run }
   2 // Copyright (C) 2005-2019 Free Software Foundation, Inc.
   3 //
   4 // This file is part of the GNU ISO C++ Library.  This library is free
   5 // software; you can redistribute it and/or modify it under the
   6 // terms of the GNU General Public License as published by the
   7 // Free Software Foundation; either version 3, or (at your option)
   8 // any later version.
   9
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License along
  16 // with this library; see the file COPYING3.  If not see
  17 // <http://www.gnu.org/licenses/>.
  18
  19 // TR1 2.2.2 Template class shared_ptr [tr.util.smartptr.shared]
  20
  21 #include <tr1/memory>
  22 #include <testsuite_hooks.h>
  23
  24 struct A { };
  25
  26 // 2.2.3.1 shared_ptr constructors [tr.util.smartptr.shared.const]
  27
  28 // Construction from expired weak_ptr
  29 int
  30 test01()
  31 {
  32   bool test = false;
  33
  34   std::tr1::shared_ptr<A> a1(new A);
  35   std::tr1::weak_ptr<A> wa(a1);
  36   a1.reset();
  37   VERIFY( wa.expired() );
  38   try
  39   {
  40     std::tr1::shared_ptr<A> a2(wa);
  41   }
  42   catch (const std::tr1::bad_weak_ptr&)
  43   {
  44     // Expected.
  45     test = true;
  46   }
  47   VERIFY( test );
  48
  49   return 0;
  50 }
  51
  52 int
  53 main()
  54 {
  55   test01();
  56   return 0;
  57 }