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diff --git a/js/src/tests/non262/Date/15.9.5.5-02.js b/js/src/tests/non262/Date/15.9.5.5-02.js
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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 398485;
+var summary = 'Date.prototype.toLocaleString should not clamp year';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+ printBugNumber(BUGNUMBER);
+ printStatus (summary);
+
+ var d;
+ var y;
+ var l;
+ var maxms = 8640000000000000;
+
+ d = new Date(-maxms );
+ y = d.getFullYear();
+
+ actual = y;
+ expect = -271821;
+ reportCompare(expect, actual, summary + ': check year');
+
+ l = d.toLocaleString();
+ print(l);
+ if (this.hasOwnProperty("Intl")) {
+ // ECMA-402 specifies that toLocaleString uses a proleptic Gregorian
+ // calender without year 0.
+ // Also, localized strings usually use era indicators such as "BC"
+ // instead of minus signs.
+ expect = Math.abs(y - 1) + '';
+ } else {
+ // ECMA-262 up to edition 5.1 didn't specify toLocaleString;
+ // the previous implementation assumed a calendar with year 0 and used
+ // minus sign.
+ expect = y + '';
+ }
+ actual = l.match(/-?[0-9]{3,}/) + '';
+ reportCompare(expect, actual, summary + ': check toLocaleString');
+
+ d = new Date(maxms );
+ y = d.getFullYear();
+ l = d.toLocaleString();
+ print(l);
+
+ actual = y;
+ expect = 275760;
+ reportCompare(expect, actual, summary + ': check year');
+
+ actual = l.match(new RegExp(y)) + '';
+ expect = y + '';
+ reportCompare(expect, actual, summary + ': check toLocaleString');
+}