diff -r 3d726dbfca31 Objects/rangeobject.c
--- a/Objects/rangeobject.c	Wed Jun 15 17:16:16 2016 -0500
+++ b/Objects/rangeobject.c	Fri Jun 17 00:28:20 2016 +0800
@@ -30,7 +30,7 @@
 
     step = PyNumber_Index(step);
     if (step) {
-        Py_ssize_t istep = PyNumber_AsSsize_t(step, NULL);
+        Py_ssize_t istep = PyNumber_AsSsize_t(step, PyExc_OverflowError);
         if (istep == -1 && PyErr_Occurred()) {
             /* Ignore OverflowError, we know the value isn't 0. */
             PyErr_Clear();