summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/built-ins/SharedArrayBuffer/options-maxbytelength-data-allocation-after-object-creation.js
blob: 58e97486097b8268261f436c354a94ac9a3520ca (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
44
45
// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!this.hasOwnProperty('SharedArrayBuffer')||!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- SharedArrayBuffer,resizable-arraybuffer is not enabled unconditionally, requires shell-options
// Copyright (C) 2024 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-sharedarraybuffer-length
description: >
  The new SharedArrayBuffer instance is created prior to allocating the Data Block.
info: |
  SharedArrayBuffer ( length [ , options ] )

  ...
  4. Return ? AllocateSharedArrayBuffer(NewTarget, byteLength, requestedMaxByteLength).

  AllocateSharedArrayBuffer( constructor, byteLength )

  ...
  5. Let obj be ? OrdinaryCreateFromConstructor(constructor, "%SharedArrayBuffer.prototype%", slots).
  ...
  7. Let block be ? CreateSharedByteDataBlock(allocLength).
  ...

features: [SharedArrayBuffer, resizable-arraybuffer, Reflect.construct]
---*/

function DummyError() {}

let newTarget = Object.defineProperty(function(){}.bind(null), "prototype", {
  get() {
    throw new DummyError();
  }
});

assert.throws(DummyError, function() {
  let byteLength = 0;
  let options = {
    maxByteLength: 7 * 1125899906842624
  };

  // Allocating 7 PiB should fail with a RangeError.
  // Math.pow(1024, 5) = 1125899906842624
  Reflect.construct(SharedArrayBuffer, [], newTarget);
});

reportCompare(0, 0);