The Tor Browser / file revision

 <url id=test1></url>><listing id=test2>

 A[]@q

 <root id=test3><bdi dir=ltr id=test4><script>

 var docElement = document.body ? document.body : document.documentElement;

 function initCF() {

 try { test5 = document.createElementNS("http://www.w3.org/2000/svg", "symbol"); } catch(e) {}

 setTimeout("CFcrash()", 231);

 }

 document.addEventListener("DOMContentLoaded", initCF, false);

 function CFcrash() {

 try { if (test1 != docElement) { test1.parentNode.removeChild(test1); test1 = test4; }} catch(e) {}

 try { if (test1 != docElement) { test1.parentNode.removeChild(test1); }} catch(e) {}

 try { test4.appendChild(test3); } catch(e) {}

 try { test3.appendChild(test2); } catch(e) {}

 try { test4.setAttribute("dir", "invalid"); } catch(e) {}

 setTimeout('try { test5.appendChild(test4); } catch(e) {}', 343);

 try { test2.innerHTML = "W?bj; ![#`A`#Mn$1r+cn	OwS56 =@jQZU	Ua.[d	4g07!6pZzjN	~4P	1C0_# E#Ak/OYXQ46F%7)^KI m-9:`u2^yx R	,yv04!`L)x3V A5K*&NK!Z	qnXt!`I	4i|i=eE?VI=^&lx:F hI2=t+AH)A`	| 3wWxDv0eU"; } catch(e) {}

 }</script>>