[webkit-changes] [WebKit/WebKit] 7ce8ca: Crash under WebCore::ScrollableArea::availableCont...

[Nikos Mouchtaris]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 7ce8caf68469c9210478f4ceb968ce758a789f55
      https://github.com/WebKit/WebKit/commit/7ce8caf68469c9210478f4ceb968ce758a789f55
  Author: Nikolaos Mouchtaris <nmouchtaris at apple.com>
  Date:   2024-06-21 (Fri, 21 Jun 2024)

  Changed paths:
    A LayoutTests/fast/scrolling/mac/scrollbars/scrollbars-controller-crash-expected.txt
    A LayoutTests/fast/scrolling/mac/scrollbars/scrollbars-controller-crash.html
    M Source/WebCore/page/LocalFrameView.cpp
    M Source/WebCore/platform/ScrollableArea.cpp

  Log Message:
  -----------
  Crash under WebCore::ScrollableArea::availableContentSizeChanged
https://bugs.webkit.org/show_bug.cgi?id=275458
rdar://129621091

Reviewed by Tim Horton.

Add a call to the default scrollbars creator if page is null in
LocalFrameView::createScrollbarsController. Also add a release assert to
catch any cases of this in the future.

* Source/WebCore/page/LocalFrameView.cpp:
(WebCore::LocalFrameView::createScrollbarsController):
* Source/WebCore/platform/ScrollableArea.cpp:
(WebCore::ScrollableArea::scrollbarsController const):

Canonical link: https://commits.webkit.org/280256@main



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