Reviewers: Christian Plesner Hansen,
Description:
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.
Please review this at http://codereview.chromium.org/18221
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/
Affected files:
A test/mjsunit/bugs/bug-186.js
Index: test/mjsunit/bugs/bug-186.js
===================================================================
--- test/mjsunit/bugs/bug-186.js (revision 0)
+++ test/mjsunit/bugs/bug-186.js (revision 0)
@@ -0,0 +1,55 @@
+// 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();
+
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