<!doctype html> <title>Cloning objects, preserving sharing</title> <script src="/resources/testharness.js"></script> <script src="/resources/testharnessreport.js"></script> <div id=log></div> <script> async_test(function() { var obj1 = {o: 1}; var obj2 = {d: obj1}; var obj3 = {d: obj1}; var obj_dag = {b: obj2, c: obj3}; postMessage(obj_dag, '*'); onmessage = this.step_func(function(e) { assert_equals(e.data.b.d, e.data.c.d); this.done(); }); }); </script>