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

   1 // { dg-do run { target c++11 } }
   2
   3 // Copyright (C) 2005-2019 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 // 20.6.6.2.1 shared_ptr constructors [util.smartptr.shared.const]
  28
  29 // Construction from expired weak_ptr
  30 int
  31 test01()
  32 {
  33   bool test = false;
  34
  35   std::shared_ptr<A> a1(new A);
  36   std::weak_ptr<A> wa(a1);
  37   a1.reset();
  38   VERIFY( wa.expired() );
  39   try
  40   {
  41     std::shared_ptr<A> a2(wa);
  42   }
  43   catch (const std::bad_weak_ptr& e)
  44   {
  45     // Expected.
  46     if (e.what() == std::string("bad_weak_ptr"))
  47       test = true;
  48   }
  49   VERIFY( test );
  50
  51   return 0;
  52 }
  53
  54 int
  55 main()
  56 {
  57   test01();
  58   return 0;
  59 }