js/src/jit-test/tests/arrays/reverse-nonarray-nonwritable-element.js@ac0c01689b40
js/src/jit-test/tests/arrays/reverse-nonarray-nonwritable-element.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.
1 // Array.prototype.reverse does a strict assignment to this.length even if the
2 // caller is nonstrict. Bug 886087.
4 load(libdir + "asserts.js");
6 // obj[1] is read-only
7 var obj = {0: "zero", length: 2, reverse: [].reverse};
8 Object.defineProperty(obj, "1", {configurable: true, value: "one", writable: false});
9 assertThrowsInstanceOf(() => obj.reverse(), TypeError);
11 // obj[1] has only a getter
12 Object.defineProperty(obj, "1", {configurable: true, get: () => "one"});
13 assertThrowsInstanceOf(() => obj.reverse(), TypeError);
