[Python-checkins] r60057 - python/trunk/Objects/classobject.c
guido.van.rossum
python-checkins at python.org
Fri Jan 18 21:56:31 CET 2008
Author: guido.van.rossum
Date: Fri Jan 18 21:56:30 2008
New Revision: 60057
Modified:
python/trunk/Objects/classobject.c
Log:
Fix an edge case whereby the __del__() method of a classic class could
create a new weakref to the object.
Modified: python/trunk/Objects/classobject.c
==============================================================================
--- python/trunk/Objects/classobject.c (original)
+++ python/trunk/Objects/classobject.c Fri Jan 18 21:56:30 2008
@@ -646,6 +646,16 @@
*/
assert(inst->ob_refcnt > 0);
if (--inst->ob_refcnt == 0) {
+
+ /* New weakrefs could be created during the finalizer call.
+ If this occurs, clear them out without calling their
+ finalizers since they might rely on part of the object
+ being finalized that has already been destroyed. */
+ while (inst->in_weakreflist != NULL) {
+ _PyWeakref_ClearRef((PyWeakReference *)
+ (inst->in_weakreflist));
+ }
+
Py_DECREF(inst->in_class);
Py_XDECREF(inst->in_dict);
PyObject_GC_Del(inst);
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