/js/src/jit-test/tests/basic/testDeepPropertyShadowing.js

 1function testDeepPropertyShadowing()
 2{
 3    function h(node) {
 4        var x = 0;
 5        while (node) {
 6            x++;
 7            node = node.parent;
 8        }
 9        return x;
10    }
11    var tree = {__proto__: {__proto__: {parent: null}}};
12    h(tree);
13    h(tree);
14    tree.parent = {};
15    assertEq(h(tree), 2);
16}
17testDeepPropertyShadowing();