js/src/jit-test/tests/arrays/push-densely-nonwritable-length.js@6474c204b198
js/src/jit-test/tests/arrays/push-densely-nonwritable-length.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 function f(arr, v)
2 {
3 arr.push(v);
4 }
6 function basic(out)
7 {
8 // Use a much-greater capacity than the eventual non-writable length.
9 var a = out.a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15];
10 Object.defineProperty(a, "length", { writable: false, value: 6 });
12 f(a, 99);
13 }
15 var obj = {};
16 var a;
18 try
19 {
20 basic(obj);
21 throw new Error("didn't throw!");
22 }
23 catch (e)
24 {
25 assertEq(e instanceof TypeError, true, "expected TypeError, got " + e);
27 a = obj.a;
28 assertEq(a.hasOwnProperty(6), false);
29 assertEq(a[6], undefined);
30 assertEq(a.length, 6);
31 }
