diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug781393.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug781393.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+gczeal(4,1);
+function check(o)
+{
+    print(o);
+    assertEq(o.b, 3);
+}
+function f()
+{
+    for (var i=0; i<3; i++) {
+	var o = {b: 3};
+	check(o);
+    }
+}
+f();