diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/loops/hoist-05.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/loops/hoist-05.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+function bar(x, i) {
+  if (i == 50)
+    foo.arguments[1] = 20;
+}
+
+function foo(x, j, n) {
+  var a = 0;
+  arguments;
+  for (var i = 0; i < n; i++) {
+    var q = x[j];
+    bar(x, i);
+    if (typeof q == 'undefined')
+      a++;
+  }
+  return a;
+}
+
+var a = foo([1,2,3,4], 3, 100);
+assertEq(a, 0);