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

michael@0 1 var r;
michael@0 2 Object.defineProperty(this, "x", {value: 0, writable: false});
michael@0 3
michael@0 4 for (var a = 0; a < 10; ++a)
michael@0 5 r = ++x;
michael@0 6 assertEq(x, 0);
michael@0 7 assertEq(r, 1);
michael@0 8
michael@0 9 for (var a = 0; a < 10; ++a)
michael@0 10 r = --x;
michael@0 11 assertEq(x, 0);
michael@0 12 assertEq(r, -1);
michael@0 13
michael@0 14 for (var a = 0; a < 10; ++a)
michael@0 15 r = x++;
michael@0 16 assertEq(x, 0);
michael@0 17 assertEq(r, 0);
michael@0 18
michael@0 19 for (var a = 0; a < 10; ++a)
michael@0 20 r = x--;
michael@0 21 assertEq(x, 0);
michael@0 22 assertEq(r, 0);

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