Bugs item #989168, was opened at 2004-07-11 20:04 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=989168&group_id=7586 Category: smart_ptr Group: None Status: Open Resolution: None Priority: 5 Submitted By: Nobody/Anonymous (nobody) Assigned to: Peter Dimov (pdimov) Summary: intrusive_ptr may cause dungling ptr access Initial Comment: I think intrusive_ptr may cause dungling ptr access in multithreaded environment. Currently, it's constructor is: intrusive_ptr(T * p, bool add_ref = true) : p_(p) /* the object may be deleted by other thread because this thread does not increment reference counter yet. */ { if(p_ != 0 && add_ref) intrusive_ptr_add_ref(p_); /* this may occur dungling ptr operation. */ } We can avoid this problem by "addref-before-use" policy. intrusive_ptr(T * p, bool add_ref = true) { if(p != 0 && add_ref) intrusive_ptr_add_ref(p_); /* other thread never delete the object */ p_ = p; } ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=107586&aid=989168&group_id=7586 ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Boost-bugs mailing list Boost-bugs@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/boost-bugs