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js/src/jit-test/tests/basic/testMethodWriteBarrier2.js@ac0c01689b40

js/src/jit-test/tests/basic/testMethodWriteBarrier2.js

Thu, 15 Jan 2015 15:59:08 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 15 Jan 2015 15:59:08 +0100

branch

TOR_BUG_9701

changeset 10

ac0c01689b40

permissions

-rw-r--r--

Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

 function C() {

     this.m = function () {};  // JSOP_SETMETHOD

 }

 var a = [new C, new C, new C, new C, new C, new C, new C, new C, new C];

 var b = [new C, new C, new C, new C, new C, new C, a[8],  new C, new C];

 var thrown = 'none';

 try {

     for (var i = 0; i < 9; i++) {

 	a[i].m();

 	b[i].m = 0.7;  // MethodWriteBarrier required here

     }

 } catch (exc) {

     thrown = exc.name;

 }

 assertEq(thrown, 'TypeError');