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 
X()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 
main()42 int main()
43 {
44     boost::shared_ptr< X > px( new X );
45     return boost::report_errors();
46 }
47