[Webkit-unassigned] [Bug 170602] New: Crash in WebCore::GraphicsContext::platformContext()

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Apr 7 08:42:44 PDT 2017


https://bugs.webkit.org/show_bug.cgi?id=170602

            Bug ID: 170602
           Summary: Crash in WebCore::GraphicsContext::platformContext()
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
               URL: http://substance.io/examples/tangle/
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dieter at komendera.com

Created attachment 306507

  --> https://bugs.webkit.org/attachment.cgi?id=306507&action=review

crash log

To reproduce:

1) go to http://substance.io/examples/tangle/
2) click and drag the green number 2050

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.apple.WebCore                   0x00000001087a4a67 WebCore::GraphicsContext::platformContext() const + 7
1   com.apple.WebKit                    0x0000000107e41933 WebKit::WebDragClient::startDrag(WebCore::DragImage, WebCore::IntPoint const&, WebCore::IntPoint const&, WebCore::FloatPoint const&, WebCore::DataTransfer&, WebCore::Frame&, WebCore::DragSourceAction) + 239
2   com.apple.WebCore                   0x0000000108c7ea0b WebCore::DragController::doSystemDrag(WebCore::DragImage, WebCore::IntPoint const&, WebCore::IntPoint const&, WebCore::IntRect const&, WebCore::DataTransfer&, WebCore::Frame&, WebCore::DragSourceAction) + 427
3   com.apple.WebCore                   0x0000000108c7dd0f WebCore::DragController::startDrag(WebCore::Frame&, WebCore::DragState const&, WebCore::DragOperation, WebCore::PlatformMouseEvent const&, WebCore::IntPoint const&) + 6207
4   com.apple.WebCore                   0x0000000108939843 WebCore::EventHandler::handleDrag(WebCore::MouseEventWithHitTestResults const&, WebCore::CheckDragHysteresis) + 2467
5   com.apple.WebCore                   0x0000000108cc292a WebCore::EventHandler::handleMouseDraggedEvent(WebCore::MouseEventWithHitTestResults const&, WebCore::CheckDragHysteresis) + 58
6   com.apple.WebCore                   0x00000001088a6db9 WebCore::EventHandler::handleMouseMoveEvent(WebCore::PlatformMouseEvent const&, WebCore::HitTestResult*, bool) + 1337
7   com.apple.WebCore                   0x00000001088a66c0 WebCore::EventHandler::mouseMoved(WebCore::PlatformMouseEvent const&) + 160
8   com.apple.WebKit                    0x0000000107c8eb14 WebKit::WebPage::mouseEvent(WebKit::WebMouseEvent const&) + 612

Safari Technology Preview Release 27 (Safari 10.2, WebKit 12604.1.15.2)

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