diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug776748.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug776748.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+var eCount = 0;
+var funs = [function () {}, function () {}];
+function someElement(a) {
+    ++eCount;
+    var i = (eCount >= 8) ? 1 : 0;
+    return a[i]
+}
+var recursionGuard = 0;
+function recursiveThing() {
+    someElement(funs);
+    if (++recursionGuard % 2) {
+        e1();
+    }
+}
+function e1() {
+    try {} catch (e) {}
+    someElement(funs);
+    recursiveThing()
+}
+recursiveThing()
+gc();
+recursiveThing()
+recursiveThing()