js/src/jit-test/tests/basic/testBug501690.js@6474c204b198 (annotated)
js/src/jit-test/tests/basic/testBug501690.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 | function testBug501690() { |
| michael@0 | 2 | // Property cache assertion when 3 objects along a prototype chain have the same shape. |
| michael@0 | 3 | function B(){} |
| michael@0 | 4 | B.prototype = {x: 123}; |
| michael@0 | 5 | |
| michael@0 | 6 | function D(){} |
| michael@0 | 7 | D.prototype = new B; |
| michael@0 | 8 | D.prototype.x = 1; // [1] shapeOf(B.prototype) == shapeOf(D.prototype) |
| michael@0 | 9 | |
| michael@0 | 10 | arr = [new D, new D, new D, D.prototype]; // [2] all the same shape |
| michael@0 | 11 | for (var i = 0; i < 4; i++) |
| michael@0 | 12 | assertEq(arr[i].x, 1); // same kshape [2], same vshape [1] |
| michael@0 | 13 | } |
| michael@0 | 14 | testBug501690(); |
