<!DOCTYPE html>
<html>
<head>
<style>
div {
	font-size: calc(6% + 7ch);
}
</style>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
</head>
<body>
<div style="font-family: 'Helvetica';">This test passes if there is no crash.</div>
</body>
</html>