From ac21f6a5797286e97136723a094f5b86070cde55 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Fri, 4 Aug 1995 04:05:31 +0000
Subject: [PATCH] class objects are read-only in restricted mode

---
 Objects/classobject.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Objects/classobject.c b/Objects/classobject.c
index d4a873f6fe2..0d0a10900e8 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -174,6 +174,11 @@ class_setattr(op, name, v)
 			return -1;
 		}
 	}
+	if (getrestricted()) {
+		err_setstr(RuntimeError,
+			   "classes are read-only in restricted mode");
+		return -1;
+	}
 	ac = dictlookup(op->cl_dict, name);
 	if (ac != NULL && is_accessobject(ac))
 		return setaccessvalue(ac, getowner(), v);