Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 411d6878200ccc0ac7e964b9d814f9f288f774c7
https://github.com/WebKit/WebKit/commit/411d6878200ccc0ac7e964b9d814f9f288f774c7
Author: Keita Nonaka <[email protected]>
Date: 2026-01-16 (Fri, 16 Jan 2026)
Changed paths:
M JSTests/test262/expectations.yaml
M Source/JavaScriptCore/runtime/JSGenericTypedArrayViewPrototypeFunctions.h
Log Message:
-----------
[JSC] Fix `%TypedArray%.prototype.subarray` to Calculate `beginByteOffset`
correctly to Align with ECMA-262
https://bugs.webkit.org/show_bug.cgi?id=305053
Reviewed by Yusuke Suzuki.
Previously, `thisObject->byteOffsetRaw()` was called after
`finish.toIntegerOrInfinity(globalObject)` (`finish` is equivalent to `end` in
ECMA262 sepc).
Since `finish` is observable, using `thisObject->byteOffsetRaw()` changed its
value.
This patch fixes `%TypedArray%.prototype.subarray`
to calculate `beginByteOffset` correctly to align with ECMA-262[1].
[1]: https://tc39.es/ecma262/#sec-%typedarray%.prototype.subarray
* JSTests/test262/expectations.yaml:
* Source/JavaScriptCore/runtime/JSGenericTypedArrayViewPrototypeFunctions.h:
(JSC::genericTypedArrayViewProtoFuncSubarray):
Canonical link: https://commits.webkit.org/305697@main
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