diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/jaeger/bug659438.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/jaeger/bug659438.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+var o1 = {x: {}};
+function f() {
+    var o = o1;
+    for(var i=0; i<10; i++) {
+        o1 = o.x;
+    }
+}
+f();