diff options
| -rw-r--r-- | Objects/typeobject.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Objects/typeobject.c b/Objects/typeobject.c index 9662d95..96fc7cd 100644 --- a/Objects/typeobject.c +++ b/Objects/typeobject.c @@ -2972,6 +2972,11 @@ slot_sq_length(PyObject *self) return -1; len = (int)PyInt_AsLong(res); Py_DECREF(res); + if (len < 0) { + PyErr_SetString(PyExc_ValueError, + "__len__() should return >= 0"); + return -1; + } return len; } |