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Test Info:

<html>↩
<script language=javascript>↩
function draw() {↩
var canv = document.getElementById("canv");
var ctx = canv.getContext("2d");↩
try {↩
canv.width = 50000;↩
} catch (e) { }↩
ctx.clearRect(0, 0, 10, 10);
}↩
</script>↩
<body onload="draw()">↩
<canvas id="canv" width="5" height="5"></canvas>↩
</body>↩
</html>↩