[Webkit-unassigned] [Bug 133124] New: REGRESSION(r169105): fast/regions/cssom/region-range-for-box-crash.html is more crashy than before

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=133124

           Summary: REGRESSION(r169105):
                    fast/regions/cssom/region-range-for-box-crash.html is
                    more crashy than before
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: hyatt at apple.com, mihnea at adobe.com


Looks like <http://trac.webkit.org/r169105> made this test less crashy on some bots, but more crashy on others:

http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=fast%2Fregions%2Fcssom%2Fregion-range-for-box-crash.html

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                 0x00000001068b2f7e WebCore::SelectionIterator::checkForSpanner() + 46 (RenderView.cpp:69)
1   com.apple.WebCore                 0x00000001068b3767 WebCore::SelectionIterator::SelectionIterator(WebCore::RenderObject*) + 55 (RenderView.cpp:65)
2   com.apple.WebCore                 0x00000001068a51cd WebCore::SelectionIterator::SelectionIterator(WebCore::RenderObject*) + 29 (RenderView.cpp:65)
3   com.apple.WebCore                 0x00000001068a16e9 WebCore::RenderView::setSubtreeSelection(WebCore::SelectionSubtreeRoot&, WebCore::RenderObject*, int, WebCore::RenderObject*, int, WebCore::RenderView::SelectionRepaintMode) + 249 (RenderView.cpp:935)
4   com.apple.WebCore                 0x00000001068a3155 WebCore::RenderView::splitSelectionBetweenSubtrees(WebCore::RenderObject*, int, WebCore::RenderObject*, int, WebCore::RenderView::SelectionRepaintMode) + 1365 (RenderView.cpp:910)
5   com.apple.WebCore                 0x00000001068a15e1 WebCore::RenderView::setSelection(WebCore::RenderObject*, int, WebCore::RenderObject*, int, WebCore::RenderView::SelectionRepaintMode) + 449 (RenderView.cpp:865)
6   com.apple.WebCore                 0x00000001068a3234 WebCore::RenderView::clearSelection() + 84 (RenderView.cpp:1078)
7   com.apple.WebCore                 0x00000001066507b7 WebCore::RenderElement::removeChildInternal(WebCore::RenderObject&, WebCore::RenderElement::NotifyChildrenType) + 487 (RenderElement.cpp:621)
8   com.apple.WebCore                 0x00000001066505c2 WebCore::RenderElement::removeChild(WebCore::RenderObject&) + 34 (RenderElement.cpp:521)

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