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don't make shared keys with dict subclasses

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Benjamin Peterson 2012-04-23 11:50:47 -04:00
parent 99e6f87586
commit 53b977127f
1 changed files with 1 additions and 1 deletions
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2
Objects/dictobject.c
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@ -3686,7 +3686,7 @@ _PyObjectDict_SetItem(PyTypeObject *tp, PyObject **dictptr,
res = PyDict_SetItem(dict, key, value);
if (cached != ((PyDictObject *)dict)->ma_keys) {
/* Either update tp->ht_cached_keys or delete it */
if (cached->dk_refcnt == 1) {
if (cached->dk_refcnt == 1 && PyDict_CheckExact(dict)) {
CACHED_KEYS(tp) = make_keys_shared(dict);
if (CACHED_KEYS(tp) == NULL)
return -1;