[webkit-changes] [WebKit/WebKit] d4e1b3: Use a CheckedPtr for RenderObject::m_next

[Chris Dumez]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: d4e1b3b3e7360ac27ea75ccaf8daaaed923683d8
      https://github.com/WebKit/WebKit/commit/d4e1b3b3e7360ac27ea75ccaf8daaaed923683d8
  Author: Chris Dumez <cdumez at apple.com>
  Date:   2023-10-21 (Sat, 21 Oct 2023)

  Changed paths:
    M Source/WTF/wtf/CheckedPtr.h
    M Source/WebCore/rendering/RenderObject.h

  Log Message:
  -----------
  Use a CheckedPtr for RenderObject::m_next
https://bugs.webkit.org/show_bug.cgi?id=263492

Reviewed by Darin Adler.

Introduce a PackedCheckedPtr and use it for RenderObject::m_next, to gain extra
safety without increasing the size of renderers.

* Source/WTF/wtf/CheckedPtr.h:
* Source/WebCore/rendering/RenderObject.h:

Canonical link: https://commits.webkit.org/269629@main