diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma/Date/15.9.5.2-2-n.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma/Date/15.9.5.2-2-n.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,50 @@
+/* -*- 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:          15.9.5.2-2.js
+   ECMA Section:       15.9.5.2 Date.prototype.toString
+   Description:
+   This function returns a string value. The contents of the string are
+   implementation dependent, but are intended to represent the Date in a
+   convenient, human-readable form in the current time zone.
+
+   The toString function is not generic; it generates a runtime error if its
+   this value is not a Date object. Therefore it cannot be transferred to
+   other kinds of objects for use as a method.
+
+
+   This verifies that calling toString on an object that is not a string
+   generates a runtime error.
+
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+
+var SECTION = "15.9.5.2-2";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Date.prototype.toString";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+var OBJ = new MyObject( new Date(0) );
+
+DESCRIPTION = "var OBJ = new MyObject( new Date(0) ); OBJ.toString()";
+EXPECTED = "error";
+
+new TestCase( SECTION,
+	      "var OBJ = new MyObject( new Date(0) ); OBJ.toString()",
+	      "error",
+	      eval("OBJ.toString()") );
+test();
+
+function MyObject( value ) {
+  this.value = value;
+  this.valueOf = new Function( "return this.value" );
+  this.toString = Date.prototype.toString;
+  return this;
+}