js/src/jit-test/tests/jaeger/propertyOptimize-4.js@6474c204b198 (annotated)
js/src/jit-test/tests/jaeger/propertyOptimize-4.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.
| michael@0 | 1 | // Make sure new script properties can be invalidated on specialized prototype |
| michael@0 | 2 | // types while they are still being constructed. |
| michael@0 | 3 | |
| michael@0 | 4 | function Foo(a, b, c) { |
| michael@0 | 5 | this.x = a + b; |
| michael@0 | 6 | this.y = c; |
| michael@0 | 7 | } |
| michael@0 | 8 | |
| michael@0 | 9 | updated = false; |
| michael@0 | 10 | var o = {valueOf: function() { |
| michael@0 | 11 | Object.defineProperty(Object.prototype, 'y', {set:function() { updated = true; }}) |
| michael@0 | 12 | }}; |
| michael@0 | 13 | |
| michael@0 | 14 | function Bar() {} |
| michael@0 | 15 | Bar.prototype = new Foo(o, 1, 2); |
| michael@0 | 16 | assertEq(updated, true); |
| michael@0 | 17 | assertEq(Bar.prototype.y, undefined); |
