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

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

 var s;

 function f(i) {

     if (i > 4) /* side exit when arr[i] changes from bool to undefined (via a hole) */

         assertEq(s, undefined);

     else

         assertEq(s, false);

     return 1;

 }

 /* trailing 'true' ensures array has capacity >= 10 */

 var arr = [ false, false, false, false, false, , , , , , true ];

 for (var i = 0; i < 10; ++i) {

     (s = arr[i]) + f(i);

 }