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diff --git a/js/src/tests/ecma/extensions/10.1.6.js b/js/src/tests/ecma/extensions/10.1.6.js
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+/* -*- 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:          10.1.6
+   ECMA Section:       Activation Object
+   Description:
+
+   If the function object being invoked has an arguments property, let x be
+   the value of that property; the activation object is also given an internal
+   property [[OldArguments]] whose initial value is x; otherwise, an arguments
+   property is created for the function object but the activation object is
+   not given an [[OldArguments]] property. Next, arguments object described
+   below (the same one stored in the arguments property of the activation
+   object) is used as the new value of the arguments property of the function
+   object. This new value is installed even if the arguments property already
+   exists and has the ReadOnly attribute (as it will for native Function
+   objects). (These actions are taken to provide compatibility with a form of
+   program syntax that is now discouraged: to access the arguments object for
+   function f within the body of f by using the expression f.arguments.
+   The recommended way to access the arguments object for function f within
+   the body of f is simply to refer to the variable arguments.)
+
+   Author:             christine@netscape.com
+   Date:               12 november 1997
+*/
+
+var SECTION = "10.1.6";
+var VERSION = "ECMA_1";
+startTest();
+var TITLE   = "Activation Object";
+
+writeHeaderToLog( SECTION + " "+ TITLE);
+
+var arguments = "FAILED!";
+
+var ARG_STRING = "value of the argument property";
+
+new TestCase( SECTION,
+	      "(new TestObject(0,1,2,3,4,5)).length",
+	      6,
+	      (new TestObject(0,1,2,3,4,5)).length );
+
+for ( i = 0; i < 6; i++ ) {
+
+  new TestCase( SECTION,
+		"(new TestObject(0,1,2,3,4,5))["+i+"]",
+		i,
+		(new TestObject(0,1,2,3,4,5))[i]);
+}
+
+
+//    The current object already has an arguments property.
+
+new TestCase( SECTION,
+	      "(new AnotherTestObject(1,2,3)).arguments",
+	      ARG_STRING,
+	      (new AnotherTestObject(1,2,3)).arguments );
+
+//  The function invoked with [[Call]]
+
+new TestCase( SECTION,
+	      "TestFunction(1,2,3)",
+	      ARG_STRING,
+	      TestFunction() + '' );
+
+
+test();
+
+
+
+function Prototype() {
+  this.arguments = ARG_STRING;
+}
+function TestObject() {
+  this.__proto__ = new Prototype();
+  return arguments;
+}
+function AnotherTestObject() {
+  this.__proto__ = new Prototype();
+  return this;
+}
+function TestFunction() {
+  arguments = ARG_STRING;
+  return arguments;
+}
+function AnotherTestFunction() {
+  this.__proto__ = new Prototype();
+  return this;
+}