diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/JSON/parse-mega-huge-array.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/JSON/parse-mega-huge-array.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+
+var gTestfile = 'parse-mega-huge-array.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 667527;
+var summary = "JSON.parse should parse arrays of essentially unlimited size";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+var str = '[';
+for (var i = 0, sz = Math.pow(2, 21); i < sz; i++)
+  str += '0,';
+str += '0]';
+
+var arr = JSON.parse(str);
+assertEq(arr.length, Math.pow(2, 21) + 1);
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");