[webkit-changes] [WebKit/WebKit] 99f0ba: Address debug asserts with user agent shadow roots

[Anne van Kesteren]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 99f0baacdd6dca68fed67bc275f995cf1be159f7
      
https://github.com/WebKit/WebKit/commit/99f0baacdd6dca68fed67bc275f995cf1be159f7
  Author: Anne van Kesteren <ann...@annevk.nl>
  Date:   2026-01-27 (Tue, 27 Jan 2026)

  Changed paths:
    A 
LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slot-dir-attach-child-details-crash.html
    A 
LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slot-dir-attach-child-meter-crash.html
    A 
LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slot-dir-attach-child-progress-crash.html
    A 
LayoutTests/imported/w3c/web-platform-tests/shadow-dom/slot-dir-attach-child-textarea-crash.html
    M Source/WebCore/html/HTMLDetailsElement.cpp
    M Source/WebCore/html/HTMLMeterElement.cpp
    M Source/WebCore/html/HTMLProgressElement.cpp
    M Source/WebCore/html/HTMLTextAreaElement.cpp
    M Source/WebCore/html/shadow/ProgressShadowElement.cpp
    M Source/WebCore/html/shadow/ProgressShadowElement.h

  Log Message:
  -----------
  Address debug asserts with user agent shadow roots
https://bugs.webkit.org/show_bug.cgi?id=306318
rdar://168899377

Reviewed by Ryosuke Niwa and Tim Nguyen.

New tests:

    https://github.com/web-platform-tests/wpt/pull/57354

Canonical link: https://commits.webkit.org/306273@main



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