Bugs item #1242857, was opened at 2005-07-22 00:30 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1242857&group_id=7586 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: smart_ptr Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Peter Dimov (pdimov) Summary: Can't delete automatically in circularly included object. Initial Comment: hi,all: I am a chinese student.Please forgive me because of my poor english. I found an error on smart pointer shared_ptr when i add an shared_ptr object to itself. The code is below.Class StatusBase is a subclass of Status.There is a method name addEventResult in class StatusBase. As you can see, EventResult is an object which made up of object Status( StatusBase actually because of Status is an abstract class ),Action and Event.In the case, I try to let them passed in share_ptr wrpper whenever in constructor or normal method.As my opinion,I think that will not be error and when I exit my program it will free the memory for me automatically. But in fact it will not. shared_ptr<Status> A( new Status() ); shared_ptr<Event> B( new Event() ); shared_ptr<Action> C( new Action() ); shared_ptr<EventResult> ABC( new EventResult( A, B, C ) ); //the row below will result the object A can't be released, so as to the object ABC , B and C A.addEventResult( ABC ); //next is about the decleartion of StatusBase and EventResult. For class Event and Action, it is the history. class StatusBase : public Status //{{{ { public: StatusBase(){} virtual ~StatusBase(){} public: int getEventResultCount() const ; boost::shared_ptr<EventResult> getEventResult( int index ) const ; void addEventResult( const boost::shared_ptr<EventResult>& v ) ; private: std::vector< boost::shared_ptr<EventResult> > events ; }; //}}} class EventResult : public pqkit::Object //{{{ { public: EventResult( const boost::shared_ptr<Event>& e, const boost::shared_ptr<Action>& a, const boost::shared_ptr<Status>& s ) : event(e),action (a),newStatus(s){} virtual ~EventResult() {} public: virtual const std::string toString() const { return Object::toString() ; } virtual const pqkit::Class getClass() const { return pqkit::Class("EventResult","inhert:Object->EventResult"); } boost::shared_ptr<Event> getEvent() const { return event; } boost::shared_ptr<Action> getAction() const { return action; } boost::shared_ptr<Status> getNewStatus() const { return newStatus; } private: boost::shared_ptr<Event> event ; boost::shared_ptr<Action> action ; boost::shared_ptr<Status> newStatus ; }; //}}} yours JinheZeng at GDUT from China. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=1242857&group_id=7586 ------------------------------------------------------- SF.Net email is sponsored by: Discover Easy Linux Migration Strategies from IBM. Find simple to follow Roadmaps, straightforward articles, informative Webcasts and more! Get everything you need to get up to speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click _______________________________________________ Boost-bugs mailing list Boost-bugs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs