LayoutTests/fast/css-grid-layout/grid-with-relative-font-length-crash.html - WebKit - Git at Google

 <!DOCTYPE html>
 <style>
 title {
     grid: dense row 1ex;
 }
 </style>
 <title>
 </title>
 <script type="text/javascript">
 if (window.testRunner)
     testRunner.dumpAsText();
 </script>
 <p>The test PASSES if it does not crash on Debug builds.</p>
	<!DOCTYPE html>
	<style>
	title {
	grid: dense row 1ex;
	}
	</style>
	<title>
	</title>
	<script type="text/javascript">
	if (window.testRunner)
	testRunner.dumpAsText();
	</script>
	<p>The test PASSES if it does not crash on Debug builds.</p>