Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 1f495933fd51c09f46759e319f696028318540f5
https://github.com/WebKit/WebKit/commit/1f495933fd51c09f46759e319f696028318540f5
Author: Sosuke Suzuki <[email protected]>
Date: 2025-07-11 (Fri, 11 Jul 2025)
Changed paths:
A JSTests/stress/object-entries-function-special-properties.js
A JSTests/stress/object-keys-function-special-properties.js
M JSTests/test262/expectations.yaml
M Source/JavaScriptCore/runtime/JSFunction.cpp
Log Message:
-----------
[JSC] Fix order of function's special properties returned by `Object.keys` /
`Object.entries`
https://bugs.webkit.org/show_bug.cgi?id=295485
Reviewed by Yusuke Suzuki.
According to the specification, `OrdinaryOwnPropertyKeys` called by
`Object.keys` or `Object.entries` on function objects should return
properties in ascending chronological order[1]. This order should not
be affected by `Object.defineProperty`. Therefore, when the `length`
and `name` properties of function objects are enumerable, they should
always come first.
However, in the current JSC implementation, they come last. This patch
fixes this behavior.
Note that the `prototype` property doesn't need to be considered here
as it is not configurable[2].
[1]: https://tc39.es/ecma262/#sec-ordinaryownpropertykeys
[2]: https://tc39.es/ecma262/#sec-function-instances
* JSTests/stress/object-entries-function-special-properties.js: Added.
(shouldBe):
(fn):
* JSTests/stress/object-keys-function-special-properties.js: Added.
(shouldBe):
(fn):
* JSTests/test262/expectations.yaml:
* Source/JavaScriptCore/runtime/JSFunction.cpp:
(JSC::JSFunction::getOwnSpecialPropertyNames):
Canonical link: https://commits.webkit.org/297260@main
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