1 // 2 // esft_second_ptr_test.cpp 3 // 4 // This test has been extracted from a real 5 // scenario that occurs in Boost.Python 6 // 7 // Copyright 2009 Peter Dimov 8 // 9 // Distributed under the Boost Software License, Version 1.0. 10 // See accompanying file LICENSE_1_0.txt or copy at 11 // http://www.boost.org/LICENSE_1_0.txt 12 // 13 14 15 #include <boost/enable_shared_from_this.hpp> 16 #include <boost/shared_ptr.hpp> 17 #include <boost/detail/lightweight_test.hpp> 18 19 // 20 21 class X: public boost::enable_shared_from_this<X> 22 { 23 }; 24 null_deleter(void const *)25void null_deleter( void const* ) 26 { 27 } 28 main()29int main() 30 { 31 boost::shared_ptr<X> px( new X ); 32 33 { 34 boost::shared_ptr<X> px2( px.get(), null_deleter ); 35 BOOST_TEST( px == px2 ); 36 } 37 38 try 39 { 40 boost::shared_ptr< X > qx = px->shared_from_this(); 41 42 BOOST_TEST( px == qx ); 43 BOOST_TEST( !( px < qx ) && !( qx < px ) ); 44 } 45 catch( boost::bad_weak_ptr const& ) 46 { 47 BOOST_ERROR( "px->shared_from_this() failed" ); 48 } 49 50 return boost::report_errors(); 51 } 52