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Fix #127165: crash accessing cls.bl_rna after unregistering

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Campbell Barton
2024-09-05 17:54:01 +10:00
parent ba17f6fb14
commit 1235404cfe
1 changed files with 9 additions and 5 deletions
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14
source/blender/python/intern/bpy_rna.cc
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@@ -8989,8 +8989,10 @@ static void bpy_class_free(void *pyob_ptr)
// PyDict_Clear(((PyTypeObject *)self)->tp_dict);
/* Remove the RNA attribute instead. */
PyDict_DelItem(((PyTypeObject *)self)->tp_dict, bpy_intern_str_bl_rna);
if (PyErr_Occurred()) {
/* NOTE: it's important to use `delattr` instead of `PyDict_DelItem`
* to ensure the internal slots are updated (which is also used for assignment). */
if (PyObject_DelAttr(self, bpy_intern_str_bl_rna) == -1) {
PyErr_Clear();
}
@@ -9385,9 +9387,11 @@ static PyObject *pyrna_unregister_class(PyObject * /*self*/, PyObject *py_class)
/* Call unregister. */
unreg(CTX_data_main(C), srna); /* Calls bpy_class_free, this decref's py_class. */
PyDict_DelItem(((PyTypeObject *)py_class)->tp_dict, bpy_intern_str_bl_rna);
if (PyErr_Occurred()) {
PyErr_Clear(); // return nullptr;
/* Typically `bpy_class_free` will have removed, remove here just in case. */
if (UNLIKELY(PyDict_Contains(((PyTypeObject *)py_class)->tp_dict, bpy_intern_str_bl_rna))) {
if (PyDict_DelItem(((PyTypeObject *)py_class)->tp_dict, bpy_intern_str_bl_rna) == -1) {
PyErr_Clear();
}
}
Py_RETURN_NONE;