[Webkit-unassigned] [Bug 47242] New: [chromium] DRT assertion w/accel 2D canvas in PlatformContextSkia

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=47242

           Summary: [chromium] DRT assertion w/accel 2D canvas in
                    PlatformContextSkia
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kbr at google.com
                CC: senorblanco at chromium.org, dpranke at chromium.org,
                    jamesr at chromium.org, vangelis at chromium.org,
                    scheib at chromium.org


fast/canvas/canvas-putImageData.html is failing when run in DRT with --enable-accelerated-compositing --enable-accelerated-2d-canvas due to the following assertion failure:

Program received signal SIGSEGV, Segmentation fault.
0x0000000000c331bb in WebCore::PlatformContextSkia::markDirtyRect (this=0x7fffec567900, rect=...) at WebCore/platform/graphics/skia/PlatformContextSkia.cpp:814
814            ASSERT_NOT_REACHED();
(gdb) where
#0  0x0000000000c331bb in WebCore::PlatformContextSkia::markDirtyRect (this=0x7fffec567900, rect=...) at WebCore/platform/graphics/skia/PlatformContextSkia.cpp:814
#1  0x0000000000c2aa23 in WebCore::GraphicsContext::markDirtyRect (this=0x7ffff7e92560, rect=...) at WebCore/platform/graphics/skia/GraphicsContextSkia.cpp:1257
#2  0x00000000005f252b in WebCore::CanvasRenderingContext2D::didDraw (this=0x7fffec510420, r=..., options=0) at WebCore/html/canvas/CanvasRenderingContext2D.cpp:1495
#3  0x00000000005f2fb3 in WebCore::CanvasRenderingContext2D::putImageData (this=0x7fffec510420, data=0x7fffec5c85c0, dx=0, dy=0, dirtyX=0, dirtyY=0, dirtyWidth=100, 
    dirtyHeight=100, ec=@0x7fffffffbeac) at WebCore/html/canvas/CanvasRenderingContext2D.cpp:1626
#4  0x00000000005f2bf5 in WebCore::CanvasRenderingContext2D::putImageData (this=0x7fffec510420, data=0x7fffec5c85c0, dx=0, dy=0, ec=@0x7fffffffbeac)
    at WebCore/html/canvas/CanvasRenderingContext2D.cpp:1585
...

m_backingStoreState is None at this point.

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