diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-289094.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-289094.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 289094;
+var summary = 'argument shadowing function property special case for lambdas';
+var actual = '';
+var expect = 'function:function';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+ 
+function fn()
+{
+  var o = {
+    d: function(x,y) {},
+    init: function() { this.d.x = function(x) {}; this.d.y = function(y) {}; }
+  };
+  o.init();
+  actual = typeof(o.d.x) + ':' + typeof(o.d.y);
+}
+
+fn();
+
+reportCompare(expect, actual, summary);