1 files changed, 18 insertions, 0 deletions
diff --git a/test/suite/intl402/ch12/12.1/12.1.1_5.js b/test/suite/intl402/ch12/12.1/12.1.1_5.js
new file mode 100644
index 000000000..c6b166814
--- /dev/null
+++ b/test/suite/intl402/ch12/12.1/12.1.1_5.js
@@ -0,0 +1,18 @@
+// 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(["localeMatcher"]);
+
+var locale = new Intl.DateTimeFormat(undefined, {localeMatcher: "lookup"}).resolvedOptions().locale;
+if (!isCanonicalizedStructurallyValidLanguageTag(locale)) {
+    $ERROR("DateTimeFormat returns invalid locale " + locale + ".");
+}
+