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-rw-r--r--Objects/longobject.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/Objects/longobject.c b/Objects/longobject.c
index 9296ad49b1..5a6338f630 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -3987,8 +3987,14 @@ long_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|Oi:long", kwlist,
&x, &base))
return NULL;
- if (x == NULL)
+ if (x == NULL) {
+ if (base != -909) {
+ PyErr_SetString(PyExc_TypeError,
+ "long() missing string argument");
+ return NULL;
+ }
return PyLong_FromLong(0L);
+ }
if (base == -909)
return PyNumber_Long(x);
else if (PyString_Check(x)) {