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diff --git a/js/src/tests/ecma_3/RegExp/regress-202564.js b/js/src/tests/ecma_3/RegExp/regress-202564.js
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+++ b/js/src/tests/ecma_3/RegExp/regress-202564.js
@@ -0,0 +1,67 @@
+/* -*- 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/. */
+
+/*
+ *
+ * Date:    18 April 2003
+ * SUMMARY: Testing regexp with many backreferences
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=202564
+ *
+ * Note that in Section 1 below, we expect the 1st and 4th backreferences
+ * to hold |undefined| instead of the empty strings one gets in Perl and IE6.
+ * This is because per ECMA, regexp backreferences must hold |undefined|
+ * if not used. See http://bugzilla.mozilla.org/show_bug.cgi?id=123437.
+ *
+ */
+//-----------------------------------------------------------------------------
+var i = 0;
+var BUGNUMBER = 202564;
+var summary = 'Testing regexp with many backreferences';
+var status = '';
+var statusmessages = new Array();
+var pattern = '';
+var patterns = new Array();
+var string = '';
+var strings = new Array();
+var actualmatch = '';
+var actualmatches = new Array();
+var expectedmatch = '';
+var expectedmatches = new Array();
+
+
+status = inSection(1);
+string = 'Seattle, WA to Buckley, WA';
+pattern = /(?:(.+), )?(.+), (..) to (?:(.+), )?(.+), (..)/;
+actualmatch = string.match(pattern);
+expectedmatch = Array(string, undefined, "Seattle", "WA", undefined, "Buckley", "WA");
+addThis();
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusmessages[i] = status;
+  patterns[i] = pattern;
+  strings[i] = string;
+  actualmatches[i] = actualmatch;
+  expectedmatches[i] = expectedmatch;
+  i++;
+}
+
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+  testRegExp(statusmessages, patterns, strings, actualmatches, expectedmatches);
+  exitFunc ('test');
+}