<!doctype html>
<title>loop in array in structured clone</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<script>
async_test(function() {
  var x = [];
  x[0] = x;
  postMessage(x, '*');
  onmessage = this.step_func(function(e) {
    assert_equals(e.data, e.data[0]);
    this.done();
  });
});
</script>