content/canvas/crashtests/360293-1.html@97036ab72558
content/canvas/crashtests/360293-1.html
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
1 <html>
4 <body>
5 Firefox: <a href="javascript:noCrash()">no crash</a> | <a href="javascript:crash()">crash</a><br/>
6 <canvas id="foo" width="200" height="200">
7 </canvas>
8 <script>
9 function d(lineWidth){
10 var c = document.getElementById("foo").getContext("2d")
11 c.clearRect(0,0,200,200)
12 c.lineWidth = lineWidth
13 c.beginPath()
14 c.arc(100,100,80, Math.PI, 2*Math.PI, 1)
15 c.stroke()
16 c.beginPath()
17 c.arc(50,50, 20, 0, 2*Math.PI, 1)
18 c.stroke()
19 c.beginPath()
20 c.arc(150,50, 20, 0, 2*Math.PI, 1)
21 c.stroke()
22 }
23 function noCrash() {
24 d(Math.random()*20+5)
25 }
26 function crash() {
27 d( '_' )
28 }
30 crash();
31 </script>
33 </body>
35 </html>
