diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/String/match-updates-global-lastIndex.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/String/match-updates-global-lastIndex.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var BUGNUMBER = 501739;
+var summary =
+  "String.prototype.match should zero the .lastIndex when called with a " +
+  "global RegExp";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var s = '0x2x4x6x8';
+var p = /x/g;
+p.lastIndex = 3;
+
+var arr = s.match(p);
+assertEq(arr.length, 4);
+arr.forEach(function(v) { assertEq(v, "x"); });
+assertEq(p.lastIndex, 0);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");