diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug606882-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug606882-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+// don't crash
+var book = 'Ps';
+var pattern =   "(?:"
++                   "(?:"
++                       "(?:"
++                           "(?:-|)"
++                           "\\s?"
++                       ")"
++                       "|"
++                   ")"
++                   " ?"
++                   "\\d+"
++                   "\\w?"
++               ")*";
+var re = new RegExp(pattern);
+'8:5-8'.match(re);