diff options
| -rw-r--r-- | Objects/listobject.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Objects/listobject.c b/Objects/listobject.c index e5073e1..59b1912 100644 --- a/Objects/listobject.c +++ b/Objects/listobject.c @@ -596,9 +596,11 @@ listextend_internal(PyListObject *self, PyObject *b) int blen; register int i; - if (PyObject_Size(b) == 0) + if (PyObject_Size(b) == 0) { /* short circuit when b is empty */ + Py_DECREF(b); return 0; + } if (self == (PyListObject*)b) { /* as in list_ass_slice() we must special case the |