testDeepPropertyShadowing.js

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function testDeepPropertyShadowing()

    function h(node) {

        var x = 0;

        while (node) {

            x++;

            node = node.parent;

        return x;

    var tree = {__proto__: {__proto__: {parent: null}}};

    h(tree);

    h(tree);

    tree.parent = {};

    assertEq(h(tree), 2);

testDeepPropertyShadowing();