<html>
<head>
<script>
function X() { dump("X\n"); }
function Y() { dump("Y\n"); }
function boom()
{
dump("Start9\n");
var div = document.getElementById("v");
var textNode = document.createTextNode(String.fromCharCode(0xDAAF)); // high surrogate
div.appendChild(textNode);
document.addEventListener("DOMCharacterDataModified", X, true);
textNode.data += 'B';
document.removeEventListener("DOMCharacterDataModified", X, true);
document.addEventListener("DOMAttrModified", Y, true);
textNode.data += String.fromCharCode(0xDF53); // low surrogate
document.removeEventListener("DOMAttrModified", Y, true);
}
</script>
</head>
<body onload="boom();"><div id="v"></div></body>
</html>