[Webkit-unassigned] [Bug 131273] New: Crash when zooming Google Map with an editable rectangle

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=131273

           Summary: Crash when zooming Google Map with an editable
                    rectangle
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: lan.chg at gmail.com


Sorry I don't know the exact version number for webkit in Qt 5.2.1.
I opened Google map and drew an editable rectangle in it, then zoomed the map in and in. When I was trying to zoom the map to the maximum zoom level, crash occurred.

Here's the output related to the crash:
QPainter::begin: Paint device returned engine == 0, type: 2
ASSERTION FAILED: m_ptr
c:\work\build\qt5_workdir\w\s\qtwebkit\Source\WTF\wtf/OwnPtr.h(72) : WTF::OwnPtr<class WebCore::ImageBuffer>::operator ->

And the call stack is in the attachment. It seems that the "m_image" in the BitmapTextureImageBuffer class is a null empty.

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