// Copyright (C) 2016 the V8 project authors. All rights reserved. // Copyright (C) 2017 Mozilla Corporation. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- esid: sec-typedarray-buffer-byteoffset-length description: > Use prototype from new target if it's an Object info: | 22.2.4.5 TypedArray ( buffer [ , byteOffset [ , length ] ] ) This description applies only if the TypedArray function is called with at least one argument and the Type of the first argument is Object and that object has an [[ArrayBufferData]] internal slot. ... 4. Let O be ? AllocateTypedArray(constructorName, NewTarget, %TypedArrayPrototype%). ... 22.2.4.2.1 Runtime Semantics: AllocateTypedArray (constructorName, newTarget, defaultProto [ , length ]) 1. Let proto be ? GetPrototypeFromConstructor(newTarget, defaultProto). 2. Let obj be IntegerIndexedObjectCreate (proto, «[[ViewedArrayBuffer]], [[TypedArrayName]], [[ByteLength]], [[ByteOffset]], [[ArrayLength]]» ). ... 9.4.5.7 IntegerIndexedObjectCreate (prototype, internalSlotsList) ... 10. Set the [[Prototype]] internal slot of A to prototype. ... 12. Return A. includes: [testBigIntTypedArray.js] features: [BigInt, SharedArrayBuffer, Reflect, TypedArray] ---*/ var buffer = new SharedArrayBuffer(8); function newTarget() {} var proto = {}; newTarget.prototype = proto; testWithBigIntTypedArrayConstructors(function(TA) { var ta = Reflect.construct(TA, [buffer], newTarget); assert.sameValue(ta.constructor, Object); assert.sameValue(Object.getPrototypeOf(ta), proto); });