diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug599854.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug599854.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,4 @@
+load(libdir + 'eqArrayHelper.js');
+assertEqArray(/(?:(?:(")(c)")?)*/.exec('"c"'), [ '"c"', '"', "c" ]);
+assertEqArray(/(?:(?:a*?(")(c)")?)*/.exec('"c"'), [ '"c"', '"', "c" ]);
+assertEqArray(/<script\s*(?![^>]*type=['"]?(?:dojo\/|text\/html\b))(?:[^>]*?(?:src=(['"]?)([^>]*?)\1[^>]*)?)*>([\s\S]*?)<\/script>/gi.exec('<script type="text/javascript" src="..."></script>'), ['<script type="text/javascript" src="..."></script>', '"', "...", ""]);