From: Tim Peters <tim.peters@gmail.com>
Date: Fri, 19 Jul 2002 04:04:16 +0000 (+0000)
Subject: listreverse():  Don't call the new reverse_slice unless the list
X-Git-Tag: v2.3c1~4937
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=326b44871eb9dcf98e286208bf2b2799edf2ba9e;p=thirdparty%2FPython%2Fcpython.git

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 f2132b4193b6..ce0f22e1931e 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -1316,7 +1316,8 @@ PyList_Sort(PyObject *v)
 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;
 }