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diff --git a/js/src/tests/js1_5/Error/regress-465377.js b/js/src/tests/js1_5/Error/regress-465377.js
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+/* -*- 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) 2008
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s): Igor Bukanov
+ *
+ * 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 BUGNUMBER = 465377;
+var summary = 'instanceof relations between Error objects';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  expect = actual = 'No Exception';
+
+  try
+  {
+    var list = [
+      "Error",
+      "InternalError",
+      "EvalError",
+      "RangeError",
+      "ReferenceError",
+      "SyntaxError",
+      "TypeError",
+      "URIError"
+      ];
+    var instances = [];
+
+    for (var i = 0; i != list.length; ++i) {
+      var name = list[i];
+      var constructor = this[name];
+      var tmp = constructor.name;
+      if (tmp !== name)
+        throw "Bad value for "+name+".name: "+uneval(tmp);
+      instances[i] = new constructor();
+    }
+
+    for (var i = 0; i != instances.length; ++i) {
+      var instance = instances[i];
+      var name = instance.name;
+      var constructor = instance.constructor;
+      if (constructor !== this[name])
+        throw "Bad value of (new "+name+").constructor: "+uneval(tmp);
+      var tmp = constructor.name;
+      if (tmp !== name)
+        throw "Bad value for constructor.name: "+uneval(tmp);
+      if (!(instance instanceof Object))
+        throw "Bad instanceof Object for "+name;
+      if (!(instance instanceof Error))
+        throw "Bad instanceof Error for "+name;
+      if (!(instance instanceof constructor))
+        throw "Bad instanceof constructor for "+name;
+      if (instance instanceof Function)
+        throw "Bad instanceof Function for "+name;
+      for (var j = 1; j != instances.length; ++j) {
+        if (i != j && instance instanceof instances[j].constructor) {
+          throw "Unexpected (new "+name+") instanceof "+ instances[j].name;
+        }
+      }
+    }
+
+    print("OK");
+  }
+  catch(ex)
+  {
+    actual = ex + '';
+  }
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}