Add failing test for issue 186:
http://code.google.com/p/v8/issues/detail?id=186 The issue is that the extension object is a normal javascript object on which assignments to __proto__ changes the prototype chain. Review URL: http://codereview.chromium.org/18221 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1069 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
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test/mjsunit/bugs/bug-186.js
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test/mjsunit/bugs/bug-186.js
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// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Make sure that eval can introduce a local variable called __proto__.
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// See http://code.google.com/p/v8/issues/detail?id=186
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var setterCalled = false;
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var o = {};
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o.__defineSetter__("x", function() { setterCalled = true; });
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function testLocal() {
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// Add property called __proto__ to the extension object.
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eval("var __proto__ = o");
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// Check that the extension object's prototype did not change.
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eval("var x = 27");
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assertFalse(setterCalled, "prototype of extension object changed");
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}
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function testGlobal() {
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// Assign to the global __proto__ property.
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eval("__proto__ = o");
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// Check that the prototype of the global object changed.
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eval("x = 27");
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assertTrue(setterCalled, "prototype of global object did not change");
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setterCalled = false;
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}
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testLocal();
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testGlobal();
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