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diff --git a/external/contributions/Microsoft/ietestcenter_ie9_rtm/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-b-iii-2.js b/external/contributions/Microsoft/ietestcenter_ie9_rtm/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-b-iii-2.js
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+++ b/external/contributions/Microsoft/ietestcenter_ie9_rtm/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-b-iii-2.js
@@ -0,0 +1,58 @@
+/// 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: "15.4.4.15-8-b-iii-2",
+
+    path: "TestCases/chapter15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-b-iii-2.js",
+
+    description: "Array.prototype.lastIndexOf returns without visiting subsequent element once search value is found",
+
+    test: function testcase() {
+        var arr = [2, 1, , 1, 2];
+        var elementFirstAccessed = false;
+        var elementThirdAccessed = false;
+
+        Object.defineProperty(arr, "2", {
+            get: function () {
+                elementThirdAccessed = true;
+                return 2;
+            },
+            configurable: true
+        });
+        Object.defineProperty(arr, "0", {
+            get: function () {
+                elementFirstAccessed = true;
+                return 2;
+            },
+            configurable: true
+        });
+
+        arr.lastIndexOf(2);
+        return !elementThirdAccessed && !elementFirstAccessed;
+    },
+
+    precondition: function prereq() {
+        return fnExists(Array.prototype.lastIndexOf) && fnExists(Object.defineProperty) && fnSupportsArrayIndexGettersOnArrays();
+    }
+
+});