Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 435522c0b0905a53843b3bf2d2b8fe9cda1e0609
https://github.com/WebKit/WebKit/commit/435522c0b0905a53843b3bf2d2b8fe9cda1e0609
Author: Andres Gonzalez <[email protected]>
Date: 2023-08-15 (Tue, 15 Aug 2023)
Changed paths:
M Source/WebCore/accessibility/AXTextMarker.cpp
Log Message:
-----------
AX: Crash in [WebAccessibilityObjectWrapper
textMarkerRangeAtTextMarker:forUnit:].
https://bugs.webkit.org/show_bug.cgi?id=260187
rdar://110921099
Reviewed by Tyler Wilcock.
The crash was happening because the Node pointed to by the TextMarker is
destroyed in a main loop cycle before it is used as the result of a request
coming on the AX thread that is dispatched back to the main thread. This patch
fixes the problem by checking whether the pointer is still in the AXObjectCache
data structure that keeps track of the Nodes still alive and in use by
TextMarkers.
* Source/WebCore/accessibility/AXTextMarker.cpp:
(WebCore::AXTextMarker::operator CharacterOffset const):
Canonical link: https://commits.webkit.org/266909@main
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