Adam Olsen <[EMAIL PROTECTED]> added the comment: 1. MyRef is released from the module as part of shutdown 2. MyRef's subtype_dealloc DECREFs its dictptr (not clearing it, as MyRef is dead and should be unreachable) 3. the dict DECREFs the Dummy (MyRef's target) 4. Dummy's subtype_dealloc calls PyObject_ClearWeakRefs to notify of its demise 5. the callback is called, with the dead MyRef as an argument 6. If MyRef's dict is accessed a segfault occurs. Presumably just calling the callback does enough damage to explain the segfault without accessing MyRef's dict.
As I understand, a deleted weakref doesn't call its callback. However, subtype_dealloc doesn't call the base type's tp_dealloc until *after* it does everything else. Does it need a special case for weakrefs, or maybe a tp_predealloc slot? _______________________________________ Python tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue3100> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
