Issue #6334: Fix buggy internal length calculation in builtin range function
diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index f8174ca..11fd32e 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -581,7 +581,6 @@
{
rangeobject *r = (rangeobject *)seq;
longrangeiterobject *it;
- PyObject *tmp, *len;
long lstart, lstop, lstep;
assert(PyRange_Check(seq));
@@ -612,15 +611,9 @@
it->len = it->index = NULL;
- /* Calculate length: (r->stop - r->start) / r->step */
- tmp = PyNumber_Subtract(r->stop, r->start);
- if (!tmp)
+ it->len = range_length_obj(r);
+ if (!it->len)
goto create_failure;
- len = PyNumber_FloorDivide(tmp, r->step);
- Py_DECREF(tmp);
- if (!len)
- goto create_failure;
- it->len = len;
it->index = PyLong_FromLong(0);
if (!it->index)
goto create_failure;