v8/test/mjsunit/regress/regress-1548.js
ricow@chromium.org 4e94cd8b08 Make arguments and caller always be null on native functions (fixes issue 1548 and issue 1643).
With this change we follow Firefox, Safari has a slightly different approach where the property is just not there (at least according to GetOwnProperty). 
Review URL: http://codereview.chromium.org/7792054

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9093 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
2011-09-01 11:09:11 +00:00

49 lines
2.3 KiB
JavaScript

// Copyright 2011 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.
// Test that the caller and arguments objects are not available on native
// functions.
function testfn(f) { return [1].map(f)[0]; }
function foo() { return [].map.caller; }
assertEquals(null, testfn(foo));
// Try to delete the caller property (to make sure that we can't get to the
// caller accessor on the prototype.
delete Array.prototype.map.caller;
assertEquals(null, testfn(foo));
// Redo tests with arguments object.
function testarguments(f) { return [1].map(f)[0]; }
function bar() { return [].map.arguments; }
assertEquals(null, testfn(bar));
// Try to delete the arguments property (to make sure that we can't get to the
// caller accessor on the prototype.
delete Array.prototype.map.arguments;
assertEquals(null, testarguments(bar));