| // Copyright (C) 2017 Mozilla Corporation. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-get-arraybuffer.prototype.bytelength |
| description: Throws a TypeError exception when `this` is a SharedArrayBuffer |
| features: [align-detached-buffer-semantics-with-web-reality, SharedArrayBuffer] |
| ---*/ |
| |
| var byteLength = Object.getOwnPropertyDescriptor( |
| ArrayBuffer.prototype, "byteLength" |
| ); |
| |
| var getter = byteLength.get; |
| var sab = new SharedArrayBuffer(4); |
| |
| assert.throws(TypeError, function() { |
| getter.call(sab); |
| }, "`this` cannot be a SharedArrayBuffer"); |
| |
| assert.throws(TypeError, function() { |
| Object.defineProperties(sab, { byteLength }); |
| sab.byteLength; |
| }, "`this` cannot be a SharedArrayBuffer"); |