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Add failing test for issue 186:

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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
This commit is contained in:
ager@chromium.org 2009-01-14 09:20:13 +00:00
parent 25112aba44
commit cd1afeaaa2
1 changed files with 55 additions and 0 deletions
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test/mjsunit/bugs/bug-186.js Normal file
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// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// Make sure that eval can introduce a local variable called __proto__.
// See http://code.google.com/p/v8/issues/detail?id=186
var setterCalled = false;
var o = {};
o.__defineSetter__("x", function() { setterCalled = true; });
function testLocal() {
// Add property called __proto__ to the extension object.
eval("var __proto__ = o");
// Check that the extension object's prototype did not change.
eval("var x = 27");
assertFalse(setterCalled, "prototype of extension object changed");
}
function testGlobal() {
// Assign to the global __proto__ property.
eval("__proto__ = o");
// Check that the prototype of the global object changed.
eval("x = 27");
assertTrue(setterCalled, "prototype of global object did not change");
setterCalled = false;
}
testLocal();
testGlobal();