File: data-allocation-after-object-creation.js

package info (click to toggle)
qtdeclarative-opensource-src 5.15.8%2Bdfsg-3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 259,256 kB
  • sloc: javascript: 512,396; cpp: 495,775; xml: 8,892; python: 3,304; ansic: 2,764; sh: 206; makefile: 62; php: 27
file content (37 lines) | stat: -rw-r--r-- 1,148 bytes parent folder | download | duplicates (11)
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
// Copyright (C) 2015 André Bargull. 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-sharedarraybuffer-length
description: >
  The new SharedArrayBuffer instance is created prior to allocating the Data Block.
info: |
  SharedArrayBuffer( length )

  ...
  3. Return AllocateSharedArrayBuffer(NewTarget, byteLength).

  AllocateSharedArrayBuffer( constructor, byteLength )
    1. Let obj be ? OrdinaryCreateFromConstructor(constructor, "%SharedArrayBufferPrototype%",
       «[[ArrayBufferData]], [[ArrayBufferByteLength]]» ).
    ...
    3. Let block be ? CreateByteDataBlock(byteLength).
    ...
features: [Reflect.construct]
---*/

function DummyError() {}

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

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