<html>
<head>
<script>
function print(message, color) 
{
    var paragraph = document.createElement("div");
    paragraph.appendChild(document.createTextNode(message));
    paragraph.style.fontFamily = "monospace";
    if (color)
        paragraph.style.color = color;
    document.getElementById("console").appendChild(paragraph);
}

function test() 
{
    if (!window.layoutTestController) {
        print("FAIL: This test can only run from inside DumpRenderTree.", "red");
        return;
    }

    layoutTestController.dumpAsText();
    layoutTestController.waitUntilDone();
    
    document.body.style.myCustomProperty = new String("1");
    new Date(); // allocate another object to create heap entropy
    // Collecting on a timeout seems to make the crash more reproducible -- not exactly sure why
    setTimeout('GCController.collectOnAlternateThread(true);', 0);
    setTimeout('document.body.style.myCustomProperty; print("PASS: you didn\'t crash"); layoutTestController.notifyDone();', 1);
    
    // fail-safe
    setTimeout('print("FAIL: Test hung -- bailing out"); layoutTestController.notifyDone();', 2);
}

</script>
</head>

<body onload="test();">
<p>This page tests for a crash when accessing a custom property on a DOM object after the garbage collector
   has run on an alternate thread.</p>
<p>If the test passes, you'll see a 'PASS' message below.</p>
<hr>

<div id='console'></div>

</body>
</html>