diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/loops/bug668643.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/loops/bug668643.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+
+function foo(a,n) {
+  var x = {a:[]};
+  for (var i = 0; i < n; ) {
+    a[i];
+    x.a[i];
+    a[++i];
+  }
+}
+var a = [1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0];
+var n = a.length;
+foo(a,n);