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js/src/jit-test/tests/basic/testBug501690.js@6474c204b198

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.

 function testBug501690() {

     // Property cache assertion when 3 objects along a prototype chain have the same shape.

     function B(){}

     B.prototype = {x: 123};

     function D(){}

     D.prototype = new B;

     D.prototype.x = 1;    // [1] shapeOf(B.prototype) == shapeOf(D.prototype)

     arr = [new D, new D, new D, D.prototype];  // [2] all the same shape

     for (var i = 0; i < 4; i++)

         assertEq(arr[i].x, 1);  // same kshape [2], same vshape [1]

 }

 testBug501690();