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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
function f(a, b, c, d) { return arguments; }
// Ensure non-configurable argument elements stay non-configurable.
(function () {
var args = f(1);
Object.defineProperty(args, "0", {value: 10, configurable: false});
assertFalse(Object.getOwnPropertyDescriptor(args, "0").configurable);
for (var i = 0; i < 10; i++) {
args[i] = 1;
}
assertFalse(Object.getOwnPropertyDescriptor(args, "0").configurable);
})();
// Ensure read-only properties on the prototype chain cause TypeError.
// Newly added.
(function () {
var o = [];
var proto = {};
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Reconfigured.
(function () {
var o = [];
var proto = {3: 10000};
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Newly added to arguments object.
(function () {
var o = [];
var proto = f(100);
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Reconfigured on to arguments object.
(function () {
var o = [];
var proto = f(100, 200, 300, 400);
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Extensions prevented object.
(function () {
var o = [];
var proto = [0, 1, 2, 3];
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.preventExtensions(proto);
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Extensions prevented arguments object.
(function () {
var o = [];
var proto = f(100, 200, 300, 400);
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
Object.preventExtensions(proto);
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Array with large index.
(function () {
var o = [];
var proto = [];
var index = 3;
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < index; i++) {
store(o, i, 0);
}
proto[1 << 30] = 1;
Object.defineProperty(proto, index, {value: 100, writable: false});
assertThrows(function() { store(o, index, 0); });
assertEquals(100, o[index]);
})();
// Frozen object.
(function () {
var o = [];
var proto = [0, 1, 2, 3];
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < 3; i++) {
store(o, i, 0);
}
Object.freeze(proto);
assertThrows(function() { store(o, 3, 0); });
assertEquals(3, o[3]);
})();
// Frozen arguments object.
(function () {
var o = [];
var proto = f(0, 1, 2, 3);
function store(o, i, v) { "use strict"; o[i] = v; };
o.__proto__ = proto;
for (var i = 0; i < 3; i++) {
store(o, i, 0);
}
Object.freeze(proto);
assertThrows(function() { store(o, 3, 0); });
assertEquals(3, o[3]);
})();
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