[webkit-changes] [WebKit/WebKit] 3d3143: Cherry-pick 256843.3 at webkit-2022.12-embargoed (1d7...

[Rob Buis]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 3d3143b4e387bffd05ed1f322f8e3e5e7e294107
      https://github.com/WebKit/WebKit/commit/3d3143b4e387bffd05ed1f322f8e3e5e7e294107
  Author: Rob Buis <rbuis at igalia.com>
  Date:   2023-01-25 (Wed, 25 Jan 2023)

  Changed paths:
    A LayoutTests/fast/block/crash-empty-layoutStateStack-expected.txt
    A LayoutTests/fast/block/crash-empty-layoutStateStack.html
    M Source/WebCore/rendering/RenderBlock.cpp

  Log Message:
  -----------
  Cherry-pick 256843.3 at webkit-2022.12-embargoed (1d7abcd180ab). rdar://104648890

    Protect against empty layout state
    https://bugs.webkit.org/show_bug.cgi?id=248771

    Reviewed by Alan Baradlay.

    Protect against empty layout state.

    * LayoutTests/fast/block/crash-empty-layoutStateStack-expected.txt: Added.
    * LayoutTests/fast/block/crash-empty-layoutStateStack.html: Added.
    * Source/WebCore/rendering/RenderBlock.cpp:
    (WebCore::RenderBlock::layoutPositionedObject):
    (WebCore::RenderBlock::markForPaginationRelayoutIfNeeded):

    Canonical link: https://commits.webkit.org/256843.3@webkit-2022.12-embargoed

Canonical link: https://commits.webkit.org/259376@main