diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug716853.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug716853.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+function sieve() {
+    for (var i=0; i<100; i++) { }
+}
+sieve();
+gc();
+
+function fib(n) {
+    if (n < 2)
+        return 1;
+    return fib(n-2) + fib(n-1);
+}
+fib(20);