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diff --git a/js/src/tests/ecma/ObjectObjects/15.2.4.2.js b/js/src/tests/ecma/ObjectObjects/15.2.4.2.js
new file mode 100644
index 000000000..eb461f7ea
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+++ b/js/src/tests/ecma/ObjectObjects/15.2.4.2.js
@@ -0,0 +1,96 @@
+/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 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:          15.2.4.2.js
+   ECMA Section:       15.2.4.2 Object.prototype.toString()
+
+   Description:        When the toString method is called, the following
+   steps are taken:
+   1.  Get the [[Class]] property of this object
+   2.  Call ToString( Result(1) )
+   3.  Compute a string value by concatenating the three
+   strings "[object " + Result(2) + "]"
+   4.  Return Result(3).
+
+   Author:             christine@netscape.com
+   Date:               28 october 1997
+
+*/
+var SECTION = "15.2.4.2";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Object.prototype.toString()";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+new TestCase( SECTION,  "(new Object()).toString()",    "[object Object]",  (new Object()).toString() );
+
+new TestCase( SECTION,  "myvar = this;  myvar.toString = Object.prototype.toString; myvar.toString()",
+	      GLOBAL.replace(/ @ 0x[0-9a-fA-F]+ \(native @ 0x[0-9a-fA-F]+\)/, ''),
+	      eval("myvar = this;  myvar.toString = Object.prototype.toString; myvar.toString()")
+  );
+
+new TestCase( SECTION,  "myvar = MyObject; myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Function]",
+	      eval("myvar = MyObject; myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new MyObject( true ); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      '[object Object]',
+	      eval("myvar = new MyObject( true ); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new Number(0); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Number]",
+	      eval("myvar = new Number(0); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new String(''); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object String]",
+	      eval("myvar = new String(''); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = Math; myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Math]",
+	      eval("myvar = Math; myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new Function(); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Function]",
+	      eval("myvar = new Function(); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new Array(); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Array]",
+	      eval("myvar = new Array(); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new Boolean(); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Boolean]",
+	      eval("myvar = new Boolean(); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "myvar = new Date(); myvar.toString = Object.prototype.toString; myvar.toString()",
+	      "[object Date]",
+	      eval("myvar = new Date(); myvar.toString = Object.prototype.toString; myvar.toString()") );
+
+new TestCase( SECTION,  "var MYVAR = new Object( this ); MYVAR.toString()",
+	      GLOBAL.replace(/ @ 0x[0-9a-fA-F]+ \(native @ 0x[0-9a-fA-F]+\)/, ''),
+	      eval("var MYVAR = new Object( this ); MYVAR.toString()")
+  );
+
+new TestCase( SECTION,  "var MYVAR = new Object(); MYVAR.toString()",
+	      "[object Object]",
+	      eval("var MYVAR = new Object(); MYVAR.toString()") );
+
+new TestCase( SECTION,  "var MYVAR = new Object(void 0); MYVAR.toString()",
+	      "[object Object]",
+	      eval("var MYVAR = new Object(void 0); MYVAR.toString()") );
+
+new TestCase( SECTION,  "var MYVAR = new Object(null); MYVAR.toString()",
+	      "[object Object]",
+	      eval("var MYVAR = new Object(null); MYVAR.toString()") );
+
+
+function MyObject( value ) {
+  this.value = new Function( "return this.value" );
+  this.toString = new Function ( "return this.value+''");
+}
+
+test();