[Webkit-unassigned] [Bug 199061] New: Crash in WebCore::TextIterator::range via visiblePositionForIndexUsingCharacterIterator

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=199061

            Bug ID: 199061
           Summary: Crash in WebCore::TextIterator::range via
                    visiblePositionForIndexUsingCharacterIterator
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: webkit-bug-importer at group.apple.com

e.g.
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                   0x00007fff488112cd WebCore::TextIterator::range() const + 61
1   com.apple.WebCore                   0x00007fff488110ec WebCore::CharacterIterator::range() const + 28
2   com.apple.WebCore                   0x00007fff49a2cb6a WebCore::visiblePositionForIndexUsingCharacterIterator(WebCore::Node&, int) + 2090
3   com.apple.WebCore                   0x00007fff4967a49e WebCore::AccessibilityRenderObject::visiblePositionForIndex(int) const + 174
4   com.apple.WebCore                   0x00007fff49647d93 WebCore::AXObjectCache::characterOffsetForIndex(int, WebCore::AccessibilityObject const*) + 67
5   com.apple.WebCore                   0x00007fff4966a11f WebCore::AccessibilityObject::rangeForPlainTextRange(WebCore::PlainTextRange const&) const + 191

<rdar://problem/51765259>

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