LayoutTests/js/script-tests/reentrant-caching.js

if (this.description)
    description("Test caching with re-entrancy.");

function test1() {
    var objects = [{prop:1}, {get prop(){return 2}}];

    function g(o) {
        return o.prop;
    }

    for (var i = 0; i < 10000; i++) {
        var o = {
            get prop() {
                try {
                    g(objects[++j]);
                }catch(e){
                }
                return 1;
            }
        };
        o[i] = i;
        objects.push(o);
    }
    var j=0;
    g(objects[0]);
    g(objects[1]);
    g(objects[2]);
    g(objects[3]);
}


function test2() {
    var objects = [Object.create({prop:1}), Object.create({get prop(){return 2}})];

    function g(o) {
        return o.prop;
    }
    var proto = {
        get prop() {
            try {
                g(objects[++j]);
            }catch(e){
            }
            return 1;
        }
    };
    for (var i = 0; i < 10000; i++) {
        var o = Object.create(proto);
        o[i] = i;
        objects.push(o);
    }
    var j=0;
    g(objects[0]);
    g(objects[1]);
    g(objects[2]);
    g(objects[3]);
}


function test3() {
    var objects = [Object.create(Object.create({prop:1})), Object.create(Object.create({get prop(){return 2}}))];

    function g(o) {
        return o.prop;
    }
    var proto = {
        get prop() {
            try {
                g(objects[++j]);
            }catch(e){
            }
            return 1;
        }
    };
    for (var i = 0; i < 10000; i++) {
        var o = Object.create(Object.create(proto));
        o[i] = i;
        objects.push(o);
    }
    var j=0;
    g(objects[0]);
    g(objects[1]);
    g(objects[2]);
    g(objects[3]);
}

test1();
test2();
test3();