diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug724975.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug724975.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+LastIndexOf("hello", "ll", 5);
+function LastIndexOf(string, search, position) {
+    var j = 0;
+    for (;;) {
+        for (;;) {
+            if (string != search) break;
+        }
+        if (j++ > 100)
+            break;
+    }
+}