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diff --git a/external/contributions/Microsoft/ietestcenter_ie9_rc1_refresh1/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-9-11.js b/external/contributions/Microsoft/ietestcenter_ie9_rc1_refresh1/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-9-11.js
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+++ b/external/contributions/Microsoft/ietestcenter_ie9_rc1_refresh1/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-9-11.js
@@ -0,0 +1,60 @@
+/// 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: "15.4.4.19-9-11",
+
+    path: "TestCases/chapter15/15.4/15.4.4/15.4.4.19/15.4.4.19-9-11.js",
+
+    description: "Array.prototype.map - returns an empty array if 'length' is 0 (subclassed Array, length overridden with obj w/o valueOf (toString))",
+
+    test: function testcase() {
+        function Foo() { }
+        Foo.prototype = [1, 2, 3];
+
+        var f = new Foo();
+
+        var o = {
+            toString: function () {
+                return '0';
+            }
+        };
+        f.length = o;
+
+        // objects inherit the default valueOf method of the Object object;
+        // that simply returns the itself. Since the default valueOf() method
+        // does not return a primitive value, ES next tries to convert the object
+        // to a number by calling its toString() method and converting the
+        // resulting string to a number.
+
+        function cb() { }
+        var a = Array.prototype.map.call(f, cb);
+
+        if (Array.isArray(a) && a.length === 0) {
+            return true;
+        }
+    },
+
+    precondition: function prereq() {
+        return fnExists(Array.prototype.map) && fnExists(Array.isArray);
+    }
+});