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PropertyCondition::isValidValueForAttributes should handle custom acc…#1659

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PropertyCondition::isValidValueForAttributes should handle custom acc…#1659
aoikonomopoulos wants to merge 1 commit intoWebPlatformForEmbedded:wpe-2.38from
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@aoikonomopoulos aoikonomopoulos commented May 5, 2026

…essor and custom value https://bugs.webkit.org/show_bug.cgi?id=266695 rdar://119854137

Reviewed by Mark Lam.

PropertyCondition::isValidValueForAttributes only handled accessors and values. And it didn't handle custom accessor / custom values. This patch changes it so that we can check custom accessor / custom value cases correctly.

  • JSTests/stress/attribute-custom-accessor.js: Added. (async asyncSleep):
    (setHasBeenDictionary):
    (watchToJSONForReplacements):
    (async watchLastMatchForReplacements.getLastMatch): (async watchLastMatchForReplacements):
    (const.target.toJSON):
    (opt):
    (async main):
  • Source/JavaScriptCore/bytecode/PropertyCondition.cpp: (JSC::PropertyCondition::isValidValueForAttributes):

Originally-landed-as: 272448.6@safari-7618-branch (24d1c08b9dfa). rdar://124557469
Canonical link: https://commits.webkit.org/276183@main

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< bug title >
https://bugs.webkit.org/show_bug.cgi?id=#####

Reviewed by NOBODY (OOPS!).

Explanation of why this fixes the bug (OOPS!).

* path/changed.ext:
(function):
(class.function):

827276c

Build-Tests Layout-Tests
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✅ 🛠 wpe-238-arm32-build ⏳ 🧪 wpe-238-arm32-layout

…essor and custom value https://bugs.webkit.org/show_bug.cgi?id=266695 rdar://119854137

Reviewed by Mark Lam.

PropertyCondition::isValidValueForAttributes only handled accessors and values. And it
didn't handle custom accessor / custom values. This patch changes it so that we can
check custom accessor / custom value cases correctly.

* JSTests/stress/attribute-custom-accessor.js: Added.
(async asyncSleep):
(setHasBeenDictionary):
(watchToJSONForReplacements):
(async watchLastMatchForReplacements.getLastMatch):
(async watchLastMatchForReplacements):
(const.target.toJSON):
(opt):
(async main):
* Source/JavaScriptCore/bytecode/PropertyCondition.cpp:
(JSC::PropertyCondition::isValidValueForAttributes):

Originally-landed-as: 272448.6@safari-7618-branch (24d1c08b9dfa). rdar://124557469
Canonical link: https://commits.webkit.org/276183@main
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