[Webkit-unassigned] [Bug 106075] New: [Mac] fast/regions/full-screen-video-from-region.html hits an assertion in RenderFlowThread::removeRenderBoxRegionInfo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=106075

           Summary: [Mac] fast/regions/full-screen-video-from-region.html
                    hits an assertion in
                    RenderFlowThread::removeRenderBoxRegionInfo
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: LayoutTestFailure
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: rniwa at webkit.org
                CC: hyatt at apple.com, achicu at adobe.com, zoltan at webkit.org


The test added by http://trac.webkit.org/changeset/138755 is hitting an assertion:
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&tests=full-screen-video-from-region.html

http://build.webkit.org/results/Apple%20MountainLion%20Debug%20WK1%20(Tests)/r138769%20(4286)/results.html

0   com.apple.WebCore                 0x000000010f55615b WebCore::RenderFlowThread::removeRenderBoxRegionInfo(WebCore::RenderBox*) + 459 (RenderFlowThread.cpp:449)
1   com.apple.WebCore                 0x000000010f555f63 WebCore::RenderFlowThread::removeFlowChildInfo(WebCore::RenderObject*) + 67 (RenderFlowThread.cpp:90)
2   com.apple.WebCore                 0x000000010f61b0b2 WebCore::RenderObject::removeFromRenderFlowThreadRecursive(WebCore::RenderFlowThread*) + 130 (RenderObject.cpp:2496)
3   com.apple.WebCore                 0x000000010f61b093 WebCore::RenderObject::removeFromRenderFlowThreadRecursive(WebCore::RenderFlowThread*) + 99 (RenderObject.cpp:2493)
4   com.apple.WebCore                 0x000000010f61b093 WebCore::RenderObject::removeFromRenderFlowThreadRecursive(WebCore::RenderFlowThread*) + 99 (RenderObject.cpp:2493)
5   com.apple.WebCore                 0x000000010f61b093 WebCore::RenderObject::removeFromRenderFlowThreadRecursive(WebCore::RenderFlowThread*) + 99 (RenderObject.cpp:2493)
6   com.apple.WebCore                 0x000000010f61b028 WebCore::RenderObject::removeFromRenderFlowThread() + 120 (RenderObject.cpp:2488)
7   com.apple.WebCore                 0x000000010f61af52 WebCore::RenderObject::willBeRemovedFromTree() + 354 (RenderObject.cpp:2470)
8   com.apple.WebCore                 0x000000010f61f3c5 WebCore::RenderObjectChildList::removeChildNode(WebCore::RenderObject*, WebCore::RenderObject*, bool) + 389 (RenderObjectChildList.cpp:92)
9   com.apple.WebCore                 0x000000010f60be54 WebCore::RenderObject::removeChild(WebCore::RenderObject*) + 164 (RenderObject.cpp:343)
10  com.apple.WebCore                 0x000000010f4653bb WebCore::RenderBlock::removeChild(WebCore::RenderObject*) + 1019 (RenderBlock.cpp:1195)
11  com.apple.WebCore                 0x000000010f56a966 WebCore::RenderObject::remove() + 70 (RenderObject.h:936)
12  com.apple.WebCore                 0x000000010f56a259 WebCore::RenderFullScreen::wrapRenderer(WebCore::RenderObject*, WebCore::RenderObject*, WebCore::Document*) + 425 (RenderFullScreen.cpp:132)
13  com.apple.WebCore                 0x000000010e600496 WebCore::Document::webkitWillEnterFullScreenForElement(WebCore::Element*) + 646 (Document.cpp:5212)
14  com.apple.WebKit                  0x000000010dc77ca6 -[WebKitFullScreenListener webkitWillEnterFullScreen] + 118 (WebKitFullScreenListener.mm:49)
15  DumpRenderTree                    0x000000010c888477 -[UIDelegate enterFullScreenWithListener:] + 39 (UIDelegate.mm:261)
16  com.apple.Foundation              0x00007fff86ffbdb5 __NSFireDelayedPerform + 358
17  com.apple.CoreFoundation          0x00007fff8a050da4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
18  com.apple.CoreFoundation          0x00007fff8a0508bd __CFRunLoopDoTimer + 557
19  com.apple.CoreFoundation          0x00007fff8a036099 __CFRunLoopRun + 1513
20  com.apple.CoreFoundation          0x00007fff8a0356b2 CFRunLoopRunSpecific + 290
21  com.apple.Foundation              0x00007fff8702389e -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 268
22  DumpRenderTree                    0x000000010c84b839 runTest(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&) + 5017 (DumpRenderTree.mm:1381)
23  DumpRenderTree                    0x000000010c84a42a runTestingServerLoop() + 282 (DumpRenderTree.mm:846)
24  DumpRenderTree                    0x000000010c849cf7 dumpRenderTree(int, char const**) + 391 (DumpRenderTree.mm:893)
25  DumpRenderTree                    0x000000010c84c029 main + 105 (DumpRenderTree.mm:931)

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