[Webkit-unassigned] [Bug 159240] New: AX: Crash in WebCore::Document::focusNavigationStartingNode(WebCore::FocusDirection) const + 128

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=159240

            Bug ID: 159240
           Summary: AX: Crash in
                    WebCore::Document::focusNavigationStartingNode(WebCore
                    ::FocusDirection) const + 128
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: n_wang at apple.com
                CC: n_wang at apple.com, webkit-bug-importer at group.apple.com

0   com.apple.WebCore                 0x0000000107ea38dc WebCore::Node::previousSibling() const + 12 (Node.h:150)
1   com.apple.WebCore                 0x0000000107eb2fc9 WebCore::NodeTraversal::previous(WebCore::Node const&, WebCore::Node const*) + 25 (NodeTraversal.h:123)
2   com.apple.WebCore                 0x0000000108554729 WebCore::Traversal<WebCore::Element>::previous(WebCore::Node const&) + 25 (ElementTraversal.h:177)
3   com.apple.WebCore                 0x0000000108554639 WebCore::Document::focusNavigationStartingNode(WebCore::FocusDirection) const + 281 (Document.cpp:3946)
4   com.apple.WebCore                 0x00000001087faf4d WebCore::FocusController::advanceFocusInDocumentOrder(WebCore::FocusDirection, WebCore::KeyboardEvent*, bool) + 77 (FocusController.cpp:433)
5   com.apple.WebCore                 0x00000001087fae9c WebCore::FocusController::advanceFocus(WebCore::FocusDirection, WebCore::KeyboardEvent*, bool) + 108 (FocusController.cpp:415)
6   com.apple.WebCore                 0x00000001087fadba WebCore::FocusController::setInitialFocus(WebCore::FocusDirection, WebCore::KeyboardEvent*) + 58 (FocusController.cpp:399)

<rdar://problem/27018893>

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