<html>
<head>
<script>
function testonload() {
    if (window.testRunner)
        testRunner.dumpAsText();

    document.getSelection().selectAllChildren(pre);
    document.execCommand("insertText", false, "PASS");
    document.execCommand("insertHorizontalRule", false);
}
function iframehandler() {
    document.execCommand("forwardDelete", false);
}
</script>
</head>
<body onload=testonload()>
This tests that we do not crash while deleting the selection.
<details open="true" contenteditable="true">
<p>
<iframe onload="iframehandler()"></iframe>
<table>
<pre id="pre"></pre>
</table>
</p>
</details>
</body>
</html>