Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| skip-if(!this.hasOwnProperty('Atomics')) -- Atomics is not enabled unconditionally
// Copyright (C) 2025 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-atomics.notify
description: >
TypedArray length is retrieved before index parameter coercion.
info: |
25.4.15 Atomics.notify ( typedArray, index, count )
...
2. Let byteIndexInBuffer be ? ValidateAtomicAccess(taRecord, index).
...
25.4.3.2 ValidateAtomicAccess ( taRecord, requestIndex )
1. Let length be TypedArrayLength(taRecord).
2. Let accessIndex be ? ToIndex(requestIndex).
3. Assert: accessIndex ≥ 0.
4. If accessIndex ≥ length, throw a RangeError exception.
...
features: [Atomics, TypedArray, resizable-arraybuffer]
---*/
var gsab = new SharedArrayBuffer(0, {maxByteLength: 4});
var ta = new Int32Array(gsab);
var index = {
valueOf() {
gsab.grow(4);
return 0;
}
};
var count = {
valueOf() {
throw new Test262Error("Unexpected count coercion");
}
};
assert.throws(RangeError, function() {
Atomics.notify(ta, index, count);
});
assert.sameValue(gsab.byteLength, 4);
reportCompare(0, 0);