listreverse(): Don't call the new reverse_slice unless the list
has something in it (else ob_item may be a NULL pointer).
diff --git a/Objects/listobject.c b/Objects/listobject.c
index f2132b4..ce0f22e 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -1316,7 +1316,8 @@
static PyObject *
listreverse(PyListObject *self)
{
- reverse_slice(self->ob_item, self->ob_item + self->ob_size);
+ if (self->ob_size > 1)
+ reverse_slice(self->ob_item, self->ob_item + self->ob_size);
Py_INCREF(Py_None);
return Py_None;
}