1// Copyright 2009 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
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11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Make sure that eval can introduce a local variable called __proto__.
29// See http://code.google.com/p/v8/issues/detail?id=186
30
31var setterCalled = false;
32
33var o = {};
34o.__defineSetter__("x", function() { setterCalled = true; });
35
36function runTest(test) {
37  setterCalled = false;
38  test();
39}
40
41function testLocal() {
42  // Add property called __proto__ to the extension object.
43  eval("var __proto__ = o");
44  // Check that the extension object's prototype did not change.
45  eval("var x = 27");
46  assertFalse(setterCalled, "prototype of extension object changed");
47  assertEquals(o, eval("__proto__"));
48}
49
50function testConstLocal() {
51  // Add const property called __proto__ to the extension object.
52  eval("const __proto__ = o");
53  // Check that the extension object's prototype did not change.
54  eval("var x = 27");
55  assertFalse(setterCalled, "prototype of extension object changed");
56  assertEquals(o, eval("__proto__"));
57}
58
59function testGlobal() {
60  // Assign to the global __proto__ property.
61  eval("__proto__ = o");
62  // Check that the prototype of the global object changed.
63  eval("x = 27");
64  assertTrue(setterCalled, "prototype of global object did not change");
65  setterCalled = false;
66  assertEquals(o, eval("__proto__"));
67}
68
69runTest(testLocal);
70runTest(testConstLocal);
71runTest(testGlobal);
72