blob: a6cfd230fb807c4b3e574ddfe6f47b3bcf9bb055 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
// 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: >
Use default ArrayBuffer constructor on undefined buffer.constructor.@@species
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.
...
18. Else,
a. Let bufferConstructor be ? SpeciesConstructor(srcData, %ArrayBuffer%).
...
7.3.20 SpeciesConstructor ( O, defaultConstructor )
...
5. Let S be ? Get(C, @@species).
6. If S is either undefined or null, return defaultConstructor.
...
includes: [testBigIntTypedArray.js]
features: [BigInt, Symbol.species, TypedArray]
---*/
testWithTypedArrayConstructors(function(TA) {
var OtherCtor = TA === Int8Array ? Int16Array : Int8Array;
var sample = new OtherCtor();
var ctor = {};
sample.buffer.constructor = ctor;
ctor[Symbol.species] = undefined;
var a = new TA(sample);
assert.sameValue(
Object.getPrototypeOf(a.buffer),
ArrayBuffer.prototype,
"buffer ctor is not called when species is undefined"
);
});
|
