// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options // Copyright (C) 2021 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-dataview-buffer-byteoffset-bytelength description: > The sum of the view's offset and byte length may equal the underlying buffer's byte length if it is modified during retrieval of the NewTarget's prototype. features: [resizable-arraybuffer] ---*/ // If the host chooses to throw as allowed by the specification, the observed // behavior will be identical to the case where `ArrayBuffer.prototype.resize` // has not been implemented. The following assertion prevents this test from // passing in runtimes which have not implemented the method. assert.sameValue(typeof ArrayBuffer.prototype.resize, 'function'); var buffer = new ArrayBuffer(3, {maxByteLength: 3}); var newTarget = function() {}.bind(null); Object.defineProperty(newTarget, 'prototype', { get: function() { try { buffer.resize(2); } catch (error) {} } }); var result = Reflect.construct(DataView, [buffer, 1, 1], newTarget); assert.sameValue(result.constructor, DataView); assert.sameValue(result.byteLength, 1); reportCompare(0, 0);