bpo-39778: Don't traverse weak-reference lists OrderedDict's tp_traverse and tp_clear (GH-18749)

Objects do not own weak references to them directly through the __weakref__ list so these
do not need to be traversed by the GC.

1 files changed, 0 insertions, 2 deletions

diff --git a/Objects/odictobject.c b/Objects/odictobject.c
index f412220..6813cdd 100644
--- a/Objects/odictobject.c
+++ b/Objects/odictobject.c
@@ -1454,7 +1454,6 @@ odict_traverse(PyODictObject *od, visitproc visit, void *arg)
     _ODictNode *node;
 
     Py_VISIT(od->od_inst_dict);
-    Py_VISIT(od->od_weakreflist);
     _odict_FOREACH(od, node) {
         Py_VISIT(_odictnode_KEY(node));
     }
@@ -1467,7 +1466,6 @@ static int
 odict_tp_clear(PyODictObject *od)
 {
     Py_CLEAR(od->od_inst_dict);
-    Py_CLEAR(od->od_weakreflist);
     PyDict_Clear((PyObject *)od);
     _odict_clear_nodes(od);
     return 0;