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