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diff --git a/Source/JavaScriptCore/tests/mozilla/ecma_2/instanceof/instanceof-003.js b/Source/JavaScriptCore/tests/mozilla/ecma_2/instanceof/instanceof-003.js
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+++ b/Source/JavaScriptCore/tests/mozilla/ecma_2/instanceof/instanceof-003.js
@@ -0,0 +1,57 @@
+/**
+    File Name:          instanceof-003.js
+    ECMA Section:
+    Description:        http://bugzilla.mozilla.org/show_bug.cgi?id=7635
+
+js> function Foo() {}
+js> theproto = {};
+[object Object]
+js> Foo.prototype = theproto
+[object Object]
+js> theproto instanceof Foo
+true
+
+I think this should be 'false'
+
+
+    Author:             christine@netscape.com
+    Date:               12 november 1997
+
+
+The test case described above is correct, however the second test case in this file is not,
+'o instanceof o' should thow an exception.  According to ECMA-262:
+
+    8.6.2 Internal Properties and Methods:
+        "... only Function objects implement [[HasInstance]]"
+    11.8.6 The instanceof operator:
+        "6.If Result(4) does not have a [[HasInstance]] method, throw a TypeError exception."
+
+{} does not implement [[HasInstance]] (since it is not a function), so passing it as the
+constructor to be tested to instanceof should result in a TypeError being thrown.
+
+*/
+    var SECTION = "instanceof-003";
+    var VERSION = "ECMA_2";
+    var TITLE   = "instanceof operator";
+    var BUGNUMBER ="http://bugzilla.mozilla.org/show_bug.cgi?id=7635";
+
+    startTest();
+
+    function Foo() {};
+    theproto = {};
+    Foo.prototype = theproto;
+
+    AddTestCase(
+        "function Foo() = {}; theproto = {}; Foo.prototype = theproto; " +
+            "theproto instanceof Foo",
+        false,
+        theproto instanceof Foo );
+
+
+    AddTestCase(
+        "o = {}; o instanceof o",
+        "EXCEPTION",
+        (function(){ try { var o = {}; o instanceof o; return "no exception"; } catch (e) { return "EXCEPTION"; } } )() );
+
+
+    test();