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<head>
<title>This test that ruby before/after element does not cause an unexpected downcast.</title>
<style>
	ruby:after {
		content:"foo";
	}
	ruby:before {
		content:"bar";
	}
</style>
<script>
  if (window.testRunner)
      testRunner.dumpAsText();
</script>
</head>
<body>
<br><ruby id="foo"></ruby>PASS if no assert or crash in debug build.
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	setTimeout(function() { document.getElementById("foo").appendChild(document.createElement("rt")); }, 0);
</script>
</body>
</html>