637116.html - mozsearch

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<!DOCTYPE html>

<html>

<head>

<script>

function K(v) { return function() { return v; } }

var errorProxy = new Proxy({}, {get: function() { throw new Error(); }});

function boom()

  var focused = document.createElementNS("http://www.w3.org/1999/xhtml", "input");

  document.body.appendChild(focused);

  var otherWin = window.open("data:text/html,1", "_blank", "width=200,height=200");

  try { otherWin.history.replaceState(errorProxy, "title", "replaceState.html"); } catch(e) {}

  focused.focus();

  focused.addEventListener("foo", K(otherWin.applicationCache));

  otherWin.close();

</script>

</head>

<body onload="boom();">

<button onclick="boom();">If you have popups blocked, click here to start the leak test</button>

</body>

</html>