diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/Number/15.7.4.3-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/Number/15.7.4.3-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,63 @@
+/* -*- 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:          15.7.4.3-1.js
+   ECMA Section:       15.7.4.3.1 Number.prototype.valueOf()
+   Description:
+   Returns this number value.
+
+   The valueOf function is not generic; it generates a runtime error if its
+   this value is not a Number object. Therefore it cannot be transferred to
+   other kinds of objects for use as a method.
+
+   Author:             christine@netscape.com
+   Date:               16 september 1997
+*/
+var SECTION = "15.7.4.3-1";
+var VERSION = "ECMA_1";
+startTest();
+
+
+writeHeaderToLog( SECTION + " Number.prototype.valueOf()");
+
+//  the following two line causes navigator to crash -- cmb 9/16/97
+new TestCase("SECTION",
+	     "Number.prototype.valueOf()",       
+	     0,       
+	     eval("Number.prototype.valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number(1)).valueOf()",        
+	     1,      
+	     eval("(new Number(1)).valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number(-1)).valueOf()",       
+	     -1,     
+	     eval("(new Number(-1)).valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number(0)).valueOf()",        
+	     0,      
+	     eval("(new Number(0)).valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number(Number.POSITIVE_INFINITY)).valueOf()",
+	     Number.POSITIVE_INFINITY,
+	     eval("(new Number(Number.POSITIVE_INFINITY)).valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number(Number.NaN)).valueOf()", 
+	     Number.NaN,
+	     eval("(new Number(Number.NaN)).valueOf()") );
+
+new TestCase("SECTION",
+	     "(new Number()).valueOf()",        
+	     0,      
+	     eval("(new Number()).valueOf()") );
+
+test();