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diff --git a/test/suite/ietestcenter/chapter15/15.4/15.4.4/15.4.4.21/15.4.4.21-4-9.js b/test/suite/ietestcenter/chapter15/15.4/15.4.4/15.4.4.21/15.4.4.21-4-9.js
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index 000000000..489fd066e
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+++ b/test/suite/ietestcenter/chapter15/15.4/15.4.4/15.4.4.21/15.4.4.21-4-9.js
@@ -0,0 +1,61 @@
+/// Copyright (c) 2009 Microsoft Corporation 
+/// 
+/// Redistribution and use in source and binary forms, with or without modification, are permitted provided
+/// that the following conditions are met: 
+///    * Redistributions of source code must retain the above copyright notice, this list of conditions and
+///      the following disclaimer. 
+///    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and 
+///      the following disclaimer in the documentation and/or other materials provided with the distribution.  
+///    * Neither the name of Microsoft nor the names of its contributors may be used to
+///      endorse or promote products derived from this software without specific prior written permission.
+/// 
+/// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+/// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+/// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+/// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+/// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+/// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+/// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+/// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+
+ES5Harness.registerTest({
+
+    id: "15.4.4.21-4-9",
+
+    path: "TestCases/chapter15/15.4/15.4.4/15.4.4.21/15.4.4.21-4-9.js",
+
+    description: "Array.prototype.reduce - side effects produced by step 3 are visible when an exception occurs",
+
+    test: function testcase() {
+
+        var obj = { 0: 11, 1: 12 };
+
+        var accessed = false;
+
+        Object.defineProperty(obj, "length", {
+            get: function () {
+                return {
+                    toString: function () {
+                        accessed = true;
+                        return "2";
+                    }
+                };
+            },
+            configurable: true
+        });
+
+        try {
+            Array.prototype.reduce.call(obj, null);
+            return false;
+        } catch (ex) {
+            return ex instanceof TypeError && accessed;
+        }
+    },
+
+    precondition: function prereq() {
+        return fnExists(Array.prototype.reduce) && fnExists(Object.defineProperty);
+    }
+
+});