de7d47e22f
In ES2015, the "byteLength" and "byteOffset" properties of DataViews are getters on the prototype, so the previously-used strategy of special-casing them using only the receiver map is invalid. A future CL will need to use the same strategy which will be taken for TypedArray "length", "byteLength", and "byteOffset": adding a prototype chain check. BUG=v8:5018, chromium:593634 Review-Url: https://codereview.chromium.org/1984043002 Cr-Commit-Position: refs/heads/master@{#36382}
30 lines
740 B
JavaScript
30 lines
740 B
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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var dv = new DataView(new ArrayBuffer(4), 2);
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function getByteLength(a) {
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return a.byteLength;
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}
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assertEquals(2, getByteLength(dv));
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assertEquals(2, getByteLength(dv));
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Object.defineProperty(dv.__proto__, 'byteLength', {value: 42});
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assertEquals(42, dv.byteLength);
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assertEquals(42, getByteLength(dv));
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function getByteOffset(a) {
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return a.byteOffset;
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}
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assertEquals(2, getByteOffset(dv));
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assertEquals(2, getByteOffset(dv));
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Object.defineProperty(dv.__proto__, 'byteOffset', {value: 42});
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assertEquals(42, dv.byteOffset);
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assertEquals(42, getByteOffset(dv));
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