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bpo-34042: Fix dict.copy() to maintain correct total refcount (GH-8119)

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Yury Selivanov 2018-07-06 12:20:07 -04:00 • committed by GitHub
parent dc9bc54899
commit 0b75228700
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7
Objects/dictobject.c
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@ -656,6 +656,13 @@ clone_combined_dict(PyDictObject *orig)
/* Maintain tracking. */
_PyObject_GC_TRACK(new);
}
/* Since we copied the keys table we now have an extra reference
in the system. Manually call _Py_INC_REFTOTAL to signal that
we have it now; calling DK_INCREF would be an error as
keys->dk_refcnt is already set to 1 (after memcpy). */
_Py_INC_REFTOTAL;
return (PyObject *)new;
}