Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: b2cf11dd2959c8ea114ad48b2696d9677394fef1
https://github.com/WebKit/WebKit/commit/b2cf11dd2959c8ea114ad48b2696d9677394fef1
Author: Sosuke Suzuki <[email protected]>
Date: 2026-03-06 (Fri, 06 Mar 2026)
Changed paths:
A JSTests/stress/array-includes-undefined-hole-before-fromindex.js
M Source/JavaScriptCore/dfg/DFGOperations.cpp
M Source/JavaScriptCore/runtime/JSArray.cpp
Log Message:
-----------
[JSC] `Array#includes(undefined, fromIndex)` should not find holes before
fromIndex
https://bugs.webkit.org/show_bug.cgi?id=309342
Reviewed by Yusuke Suzuki.
`[, 1, 2].includes(undefined, 1)` returned true instead of false.
containsHole() scanned from index 0 instead of fromIndex.
indexOf is unaffected (it skips holes via HasProperty).
Test: JSTests/stress/array-includes-undefined-hole-before-fromindex.js
* JSTests/stress/array-includes-undefined-hole-before-fromindex.js: Added.
(shouldBe):
(throw.new.Error.test):
(throw.new.Error):
(shouldBe.test):
* Source/JavaScriptCore/dfg/DFGOperations.cpp:
(JSC::DFG::JSC_DEFINE_JIT_OPERATION):
(JSC::DFG::JSC_DEFINE_NOEXCEPT_JIT_OPERATION):
* Source/JavaScriptCore/runtime/JSArray.cpp:
(JSC::JSArray::fastIncludes):
Canonical link: https://commits.webkit.org/308830@main
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