<html>
<script>
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
}

var target;
function check_blank() {
  var x = target.location.private;
  result.innerHTML = "Test PASSED";
  if (window.testRunner)
    testRunner.notifyDone();
}

function reload_blank() {
  target = window.frames[0];
  target.location = "about:blank";
  window.setTimeout("check_blank()", 0);
}

window.onload = reload_blank;

</script>
<body>
This tests the same-origin check on about:blank loaded in a subframe.
The test passes if the browser does not crash. You should also see
"Test PASSED" below.
<br>
<iframe src="about:blank"></iframe>
<div id="result">Test FAILED</div>
</body>
</html>