Fix a potential problem in PyLong_FromString(): could fall through the

for loop with z==NULL but continue to reference z later.

diff --git a/Objects/longobject.c b/Objects/longobject.c
index d638c64412a51b69476614160d6e9f7cdddc090e..b15a3f0ff01fea284a4e42c205e466bc7188df2a 100644 (file)
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -499,6 +499,8 @@ PyLong_FromString(str, pend, base)
                Py_DECREF(z);
                z = temp;
        }
+       if (z == NULL)
+               return NULL;
        if (str == start) {
                PyErr_SetString(PyExc_ValueError,
                                "no digits in long int constant");