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// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-typedarray-typedarray
description: >
Derive the ArrayBuffer prototype from the realm of the species constructor
info: |
22.2.4.3 TypedArray ( typedArray )
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 a [[TypedArrayName]] internal slot.
...
17. If SameValue(elementType, srcType) is true, then
a. Let data be ? CloneArrayBuffer(srcData, srcByteOffset).
...
24.1.1.4 CloneArrayBuffer ( srcBuffer, srcByteOffset [ , cloneConstructor ] )
...
2. If cloneConstructor is not present, then
a. Let cloneConstructor be ? SpeciesConstructor(srcBuffer, %ArrayBuffer%).
...
7.3.20 SpeciesConstructor ( O, defaultConstructor )
...
5. Let S be ? Get(C, @@species).
6. If S is either undefined or null, return defaultConstructor.
7. If IsConstructor(S) is true, return S.
...
24.1.1.4 CloneArrayBuffer ( srcBuffer, srcByteOffset [ , cloneConstructor ] )
...
8. Let targetBuffer be ? AllocateArrayBuffer(cloneConstructor, cloneLength).
...
9.1.14 GetPrototypeFromConstructor
...
3. Let proto be ? Get(constructor, "prototype").
4. If Type(proto) is not Object, then
a. Let realm be ? GetFunctionRealm(constructor).
b. Let proto be realm's intrinsic object named intrinsicDefaultProto.
...
includes: [testTypedArray.js]
features: [cross-realm, Symbol.species, TypedArray]
---*/
var other = $262.createRealm().global;
var C = new other.Function();
C.prototype = null;
testWithTypedArrayConstructors(function(TA) {
var sample = new TA();
var ctor = {};
sample.buffer.constructor = ctor;
ctor[Symbol.species] = C;
var typedArray = new TA(sample);
assert.sameValue(
Object.getPrototypeOf(typedArray.buffer), other.ArrayBuffer.prototype
);
});
|
