<!DOCTYPE html>
<html>
<head>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
</script>
</head>
<body>
    <div>This test passes if it does not crash.</div>
    <math>
        <msqrt style="-webkit-column-axis: vertical;">
        <mrow style="-webkit-column-span: all;">
        </mrow>
        </msqrt>
    </math>
</body>
</html>