diff --git a/js/tests/js1_5/Regress/regress-406769.js b/js/tests/js1_5/Regress/regress-406769.js
new file mode 100755
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+++ b/js/tests/js1_5/Regress/regress-406769.js
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Mozilla Foundation.
+ * Portions created by the Initial Developer are Copyright (C) 2007
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Gavin Sharp
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+var gTestfile = 'regress-406769.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 406769;
+var summary = 'Regression from bug 398609 caused infinite loop';
+var actual = '';
+var expect = '';
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+var a0;
+var a1;
+var a2;
+var a3;
+var a4;
+var a5;
+var a6;
+var a7;
+var a8;
+var a9;
+var a10;
+var a11;
+var a12;
+var a13;
+var a14;
+var a15;
+var a16;
+var a17;
+var a18;
+var a19;
+var a20;
+var a21;
+var a22;
+var a23;
+var a24;
+var a25;
+var a26;
+var a27;
+var a28;
+var a29;
+var a30;
+var a31;
+var a32;
+var a33;
+var a34;
+var a35;
+var a36;
+var a37;
+var a38;
+var a39;
+var a40;
+var a41;
+var a42;
+var a43;
+var a44;
+var a45;
+var a46;
+var a47;
+var a48;
+var a49;
+var a50;
+var a51;
+var a52;
+var a53;
+var a54;
+var a55;
+var a56;
+var a57;
+var a58;
+var a59;
+var a60;
+var a61;
+var a62;
+var a63;
+var a64;
+var a65;
+var a66;
+var a67;
+var a68;
+var a69;
+var a70;
+var a71;
+var a72;
+var a73;
+var a74;
+var a75;
+var a76;
+var a77;
+var a78;
+var a79;
+var a80;
+var a81;
+var a82;
+var a83;
+var a84;
+var a85;
+var a86;
+var a87;
+var a88;
+var a89;
+var a90;
+var a91;
+var a92;
+var a93;
+var a94;
+var a95;
+var a96;
+var a97;
+var a98;
+var a99;
+var a100;
+var a101;
+var a102;
+var a103;
+var a104;
+var a105;
+var a106;
+var a107;
+var a108;
+var a109;
+var a110;
+var a111;
+var a112;
+var a113;
+var a114;
+var a115;
+var a116;
+var a117;
+var a118;
+var a119;
+var a120;
+var a121;
+var a122;
+var a123;
+var a124;
+var a125;
+for (var a126 = 1; a126 < ([1,2,3]).length -1; ++a126)
+    1;
+
+ 
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}