From 40b7178ec81f36d2799c3f74af2f799e481f5070 Mon Sep 17 00:00:00 2001
From: "igor%mir2.org" <igor%mir2.org>
Date: Thu, 11 Jul 2002 18:39:24 +0000
Subject: [PATCH] Fixing 136893:  for(i in undefined), for(i in null) do not
 throw TypeError but treated as for(i in {})

---
 js/rhino/src/org/mozilla/javascript/ScriptRuntime.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/js/rhino/src/org/mozilla/javascript/ScriptRuntime.java b/js/rhino/src/org/mozilla/javascript/ScriptRuntime.java
index ed05f67643d..e4b61c70625 100644
--- a/js/rhino/src/org/mozilla/javascript/ScriptRuntime.java
+++ b/js/rhino/src/org/mozilla/javascript/ScriptRuntime.java
@@ -1145,6 +1145,10 @@ public class ScriptRuntime {
     }
 
     public static Object initEnum(Object value, Scriptable scope) {
+        if (value == null || value == Undefined.instance) {
+            // Empty enumeration
+            return new IdEnumeration(null);
+        }
         Scriptable m = toObject(scope, value);
         return new IdEnumeration(m);
     }