[webkit-changes] [WebKit/WebKit] 5664e3: Rare crash in LayerAncestorClippingStack::updateSc...

[Simon Fraser]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 5664e32a23f70b9c44e6d1c57c90f98289f9ea22
      https://github.com/WebKit/WebKit/commit/5664e32a23f70b9c44e6d1c57c90f98289f9ea22
  Author: Simon Fraser <simon.fraser at apple.com>
  Date:   2025-02-27 (Thu, 27 Feb 2025)

  Changed paths:
    M Source/WebCore/rendering/LayerAncestorClippingStack.cpp

  Log Message:
  -----------
  Rare crash in LayerAncestorClippingStack::updateScrollingNodeLayers()
https://bugs.webkit.org/show_bug.cgi?id=288743
rdar://145408197

Reviewed by Matt Woodrow.

Crash data suggests that `entry.overflowScrollProxyNodeID` can be unset here,
causing the `Markable<>` to release-assertion. So check it before use.

* Source/WebCore/rendering/LayerAncestorClippingStack.cpp:
(WebCore::LayerAncestorClippingStack::updateScrollingNodeLayers):

Canonical link: https://commits.webkit.org/291279@main



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