LayoutTests/editing/deleting/delete-blockquote-large-offsets.html - WebKit - Git at Google

 <!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>
	<!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('<', '<'));

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