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diff --git a/test/suite/intl402/ch09/9.2/9.2.3_5.js b/test/suite/intl402/ch09/9.2/9.2.3_5.js
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+// Copyright 2012 Mozilla Corporation. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * @description Tests that the behavior of a Record is not affected by adversarial
+ *     changes to Object.prototype.
+ * @author Norbert Lindenberg
+ */
+
+$INCLUDE("testIntl.js");
+
+taintProperties(["locale", "extension", "extensionIndex"]);
+
+testWithIntlConstructors(function (Constructor) {
+    var locale = new Constructor(undefined, {localeMatcher: "lookup"}).resolvedOptions().locale;
+    if (!isCanonicalizedStructurallyValidLanguageTag(locale)) {
+        $ERROR("Constructor returns invalid locale " + locale + ".");
+    }
+
+    return true;
+});
+