<!DOCTYPE html>
<html>
<head>
<title>This tests that we can handle float placement even when the float takes over the entire line.</title>
<style>
th {
    margin: 100000000px;
}
tr, th {
    float: left;
}
</style>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
</head>
<body>
PASS if no crash or hang.
<table><tr><th></th><td></td></tr></table>
</body>
</html>