<!DOCTYPE html>
<html>
<body>
This tests setting caret inside a blockquote with a large offset and running execCommand('Delete').  WebKit should not crash and you should see PASS below:
<div id="test" contentEditable="true">
<blockquote type="cite" id="blockquote" style="font-size: 0px; -webkit-min-logical-height: 4px;"><br></blockquote>
</div>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

window.getSelection().setPosition(document.getElementById('blockquote'), 2000000000);
document.execCommand("Delete");

var test = document.getElementById('test');
if (test.innerHTML == '' || test.innerHTML == '<br>') // Allow a placeholder
    document.writeln('PASS');
else
    document.writeln('FAIL: expected empty line but got ' + test.innerHTML.replace('<', '&lt;'));

</script>
</body>
</html>