diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/Boolean/15.6.4.3-4-n.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/Boolean/15.6.4.3-4-n.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* -*- 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/. */
+
+
+/**
+   File Name:          15.6.4.3-4.js
+   ECMA Section:       15.6.4.3 Boolean.prototype.valueOf()
+   Description:        Returns this boolean value.
+
+   The valueOf function is not generic; it generates
+   a runtime error if its this value is not a Boolean
+   object.  Therefore it cannot be transferred to other
+   kinds of objects for use as a method.
+
+   Author:             christine@netscape.com
+   Date:               june 27, 1997
+*/
+var SECTION = "15.6.4.3-4-n";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Boolean.prototype.valueOf()";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+DESCRIPTION = "valof=Boolean.prototype.valueOf; x=new String( 'hello' ); x.valueOf=valof;x.valueOf()"
+  EXPECTED = "error";
+
+new TestCase(   SECTION,
+		"valof=Boolean.prototype.valueOf; x=new String( 'hello' ); x.valueOf=valof;x.valueOf()",
+		"error",
+		eval("valof=Boolean.prototype.valueOf; x=new String( 'hello' ); x.valueOf=valof;x.valueOf()") );
+
+test();