ceph/src/boost/libs/smart_ptr/test/weak_from_raw_test3.cpp

   1 //
   2 //  weak_from_raw_test3.cpp
   3 //
   4 //  Test that weak_from_raw and shared_from_raw
   5 //  return consistent values from a constructor
   6 //
   7 //  Copyright (c) 2015 Peter Dimov
   8 //
   9 //  Distributed under the Boost Software License, Version 1.0.
  10 //
  11 //  See accompanying file LICENSE_1_0.txt or copy at
  12 //  http://www.boost.org/LICENSE_1_0.txt
  13 //
  14
  15 #include <boost/smart_ptr/enable_shared_from_raw.hpp>
  16 #include <boost/weak_ptr.hpp>
  17 #include <boost/core/lightweight_test.hpp>
  18
  19 class X: public boost::enable_shared_from_raw
  20 {
  21 public:
  22
  23     X()
  24     {
  25         boost::weak_ptr<X> p1 = boost::weak_from_raw( this );
  26         BOOST_TEST( !p1.expired() );
  27
  28         boost::weak_ptr<X> p2 = boost::weak_from_raw( this );
  29         BOOST_TEST( !p2.expired() );
  30         BOOST_TEST( !( p1 < p2 ) && !( p2 < p1 ) );
  31
  32         boost::weak_ptr<X> p3 = boost::shared_from_raw( this );
  33         BOOST_TEST( !( p1 < p3 ) && !( p3 < p1 ) );
  34
  35         boost::weak_ptr<X> p4 = boost::weak_from_raw( this );
  36         BOOST_TEST( !p4.expired() );
  37         BOOST_TEST( !( p3 < p4 ) && !( p4 < p3 ) );
  38         BOOST_TEST( !( p1 < p4 ) && !( p4 < p1 ) );
  39     }
  40 };
  41
  42 int main()
  43 {
  44     boost::shared_ptr< X > px( new X );
  45     return boost::report_errors();
  46 }