diff options
Diffstat (limited to 'Objects/listobject.c')
| -rw-r--r-- | Objects/listobject.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Objects/listobject.c b/Objects/listobject.c index 7b4bf35a3f..98d7e47354 100644 --- a/Objects/listobject.c +++ b/Objects/listobject.c @@ -838,6 +838,10 @@ listextend(PyListObject *self, PyObject *b) /* Guess a result list size. */ n = _PyObject_LengthHint(b, 8); + if (n == -1) { + Py_DECREF(it); + return NULL; + } m = Py_SIZE(self); mn = m + n; if (mn >= m) { |