fix segfault when clearing an unset oneof in Python

https://github.com/protocolbuffers/protobuf/issues/10461 PiperOrigin-RevId: 472891559
3 years ago · 27f8d367d3
parent 467e2b5e3b
commit 27f8d367d3
1 changed files with 1 additions and 1 deletions
--- a/python/message.c
+++ b/python/message.c
@ -1361,7 +1361,7 @@ static PyObject* PyUpb_Message_ClearField(PyObject* _self, PyObject* arg) {
  }

  if (o) f = upb_Message_WhichOneof(self->ptr.msg, o);
-  PyUpb_Message_DoClearField(_self, f);
+  if (f) PyUpb_Message_DoClearField(_self, f);
  Py_RETURN_NONE;
 }