+++ /dev/null
-"""
-_PyType_Lookup() returns a borrowed reference.
-This attacks the call in dictobject.c.
-"""
-
-class A(object):
- pass
-
-class B(object):
- def __del__(self):
- print('hi')
- del D.__missing__
-
-class D(dict):
- class __missing__:
- def __init__(self, *args):
- pass
-
-
-d = D()
-a = A()
-a.cycle = a
-a.other = B()
-del a
-
-prev = None
-while 1:
- d[5]
- prev = (prev,)
f = descr->ob_type->tp_descr_get;
if (f != NULL && PyDescr_IsData(descr)) {
res = f(descr, obj, (PyObject *)obj->ob_type);
- Py_DECREF(descr);
goto done;
}
}
res = PyDict_GetItem(dict, name);
if (res != NULL) {
Py_INCREF(res);
- Py_XDECREF(descr);
Py_DECREF(dict);
goto done;
}
if (f != NULL) {
res = f(descr, obj, (PyObject *)Py_TYPE(obj));
- Py_DECREF(descr);
goto done;
}
if (descr != NULL) {
res = descr;
- /* descr was already increfed above */
+ descr = NULL;
goto done;
}
"'%.50s' object has no attribute '%U'",
tp->tp_name, name);
done:
+ Py_XDECREF(descr);
Py_DECREF(name);
return res;
}
}
descr = _PyType_Lookup(tp, name);
+ Py_XINCREF(descr);
+
f = NULL;
if (descr != NULL) {
f = descr->ob_type->tp_descr_set;
"'%.50s' object attribute '%U' is read-only",
tp->tp_name, name);
done:
+ Py_XDECREF(descr);
Py_DECREF(name);
return res;
}