RESOLVED FIXED312444
Make downcast / dynamicDowncast / uncheckedDowncast work with JSCell subclasses 
https://bugs.webkit.org/show_bug.cgi?id=312444
Summary Make downcast / dynamicDowncast / uncheckedDowncast work with JSCell subclasses
Chris Dumez
Reported 2026-04-15 21:20:39 PDT
Make downcast / dynamicDowncast / uncheckedDowncast work with JSCell subclasses.
Attachments
Add attachment proposed patch, testcase, etc.
Chris Dumez
Comment 1 2026-04-15 21:22:32 PDT
Pull request: https://github.com/WebKit/WebKit/pull/62880
Chris Dumez
Comment 2 2026-04-16 16:38:19 PDT
*** Bug 312359 has been marked as a duplicate of this bug. ***
EWS
Comment 3 2026-04-16 21:05:25 PDT
Committed 311418@main (195397957f97): <https://commits.webkit.org/311418@main> Reviewed commits have been landed. Closing PR #62880 and removing active labels.
Radar WebKit Bug Importer
Comment 4 2026-04-16 21:06:15 PDT
<rdar://problem/174978362>
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