1 // 2 // weak_from_raw_test5.cpp 3 // 4 // Tests whether pointers returned from weak_from_raw 5 // expire properly 6 // 7 // Copyright 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(boost::weak_ptr<X> & r)23 explicit X( boost::weak_ptr< X > & r ) 24 { 25 r = boost::weak_from_raw( this ); 26 } 27 }; 28 main()29int main() 30 { 31 boost::weak_ptr<X> p1, p2; 32 33 { 34 boost::shared_ptr< X > px( new X( p1 ) ); 35 p2 = boost::weak_from_raw( px.get() ); 36 37 BOOST_TEST( !p1.expired() ); 38 BOOST_TEST( !p2.expired() ); 39 } 40 41 BOOST_TEST( p1.expired() ); 42 BOOST_TEST( p2.expired() ); 43 44 return boost::report_errors(); 45 } 46