[webkit-changes] [WebKit/WebKit] 705145: AX: Fix for hang in AXObjectCache::textMarkerDataF...

[AndresGonzalezApple]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 705145c30a471994d4d58c76840a58959e15f12f
      https://github.com/WebKit/WebKit/commit/705145c30a471994d4d58c76840a58959e15f12f
  Author: Andres Gonzalez <andresg_22 at apple.com>
  Date:   2023-04-20 (Thu, 20 Apr 2023)

  Changed paths:
    M Source/WebCore/accessibility/AXObjectCache.cpp

  Log Message:
  -----------
  AX: Fix for hang in AXObjectCache::textMarkerDataForNextCharacterOffset.
https://bugs.webkit.org/show_bug.cgi?id=255655
<rdar://problem/108261895>

Reviewed by Chris Fleizach and Tyler Wilcock.

There may be the case where the next CharacterOffset is equal to the previous one and thus causes the loop to go forever. Same applies to textMarkerDataForPreviousCharacterOffset.

* Source/WebCore/accessibility/AXObjectCache.cpp:
(WebCore::AXObjectCache::textMarkerDataForNextCharacterOffset):
(WebCore::AXObjectCache::textMarkerDataForPreviousCharacterOffset):

Canonical link: https://commits.webkit.org/263172@main