diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug682252.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug682252.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+// Binary: cache/js-dbg-64-7054f0e3e70e-linux
+// Flags:
+//
+
+re = new RegExp("([^b]*)+((..)|(\\3))+?Sc*a!(a|ab)(c|bcd)(<*)", "i");
+var str = "aNULLxabcd";
+str.replace(re, function(s) { return s; });