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Test Info:

<html>
<head><style>
/* Sets of heights that trigger crash:
100px/50px/51+px
100px/30px/74+px
Get only an assert unless you set ".d { position: absolute; }".
Trigger hang (separate issue, absolute not needed):
10px/10px/9999px
10px/10px/999999px --> "bad height" notreached
*/
#colset { width: 200px;
column-count: 3; }
#a { height: 100px; }
#b { height: 50px; }
#c { height: 51px; }
#d { position: absolute; }
</style>
<script>
function boom() {
document.getElementById('a').style.height = 'auto';
}
</script>
</head>
<!-- Removing whitespace in body for simpler frame trees -->
<body onload="setTimeout('boom()', 1000)"
><div id="colset"
><div
><div id="a"></div
><div id="b"
><div id="c"></div
><div id="d"></div
></div
></div
></div
></body>
</html>