v8/test/mjsunit/regress/regress-610633.js

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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
function getLength(a) {
return a.length;
}
function getByteLength(a) {
return a.byteLength;
}
function getByteOffset(a) {
return a.byteOffset;
}
var a = new Uint8Array([1, 2, 3]);
getLength(a);
getLength(a);
Object.defineProperty(a.__proto__, 'length', {value: 42});
assertEquals(42, getLength(a));
assertEquals(42, a.length);
getByteLength(a);
getByteLength(a);
Object.defineProperty(a.__proto__, 'byteLength', {value: 42});
assertEquals(42, getByteLength(a));
assertEquals(42, a.byteLength);
getByteOffset(a);
getByteOffset(a);
Object.defineProperty(a.__proto__, 'byteOffset', {value: 42});
assertEquals(42, getByteOffset(a));
assertEquals(42, a.byteOffset);