cd76322817
When --harmony-strict-legacy-accessor-builtins is enabled, it brings V8's behavior in line with the spec and more recent versions of SpiderMonkey and JSC: - No implicit receiver coercion - Attempting to redefine a non-configurable property throws Bug: v8:5070 Change-Id: I82b927538604136c0c550e19bcc606fbfea1377e Reviewed-on: https://chromium-review.googlesource.com/478312 Reviewed-by: Daniel Ehrenberg <littledan@chromium.org> Commit-Queue: Adam Klein <adamk@chromium.org> Cr-Commit-Position: refs/heads/master@{#44703}
42 lines
2.1 KiB
JavaScript
42 lines
2.1 KiB
JavaScript
// Copyright 2011 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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// This regression tests that we are not allowed to overwrite an existing
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// non-configurable getter with a new getter. In addition, we should not
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// be able to change the configurable flag from false to true.
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var a = {};
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Object.defineProperty(a, 'b',
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{ get: function () { return 42; }, configurable: false });
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// Do not allow us to redefine b on a.
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try {
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a.__defineGetter__('b', function _b(){ return 'foo'; });
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} catch (e) {}
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assertEquals(42, a.b);
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var desc = Object.getOwnPropertyDescriptor(a, 'b');
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assertFalse(desc.configurable);
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