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Issue #22079: PyType_Ready() now checks that statically allocated type has

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no dynamically allocated bases.
This commit is contained in:
Serhiy Storchaka 2015-01-28 11:06:04 +02:00
commit 66acbb28ee
2 changed files with 17 additions and 0 deletions
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14
Objects/typeobject.c
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@ -4683,6 +4683,20 @@ PyType_Ready(PyTypeObject *type)
inherit_slots(type, (PyTypeObject *)b);
}
/* All bases of statically allocated type should be statically allocated */
if (!(type->tp_flags & Py_TPFLAGS_HEAPTYPE))
for (i = 0; i < n; i++) {
PyObject *b = PyTuple_GET_ITEM(bases, i);
if (PyType_Check(b) &&
(((PyTypeObject *)b)->tp_flags & Py_TPFLAGS_HEAPTYPE)) {
PyErr_Format(PyExc_TypeError,
"type '%.100s' is not dynamically allocated but "
"its base type '%.100s' is dynamically allocated",
type->tp_name, ((PyTypeObject *)b)->tp_name);
goto error;
}
}
/* Sanity check for tp_free. */
if (PyType_IS_GC(type) && (type->tp_flags & Py_TPFLAGS_BASETYPE) &&
(type->tp_free == NULL || type->tp_free == PyObject_Del)) {