[Mono-bugs] [Bug 637185] New: Crash while just moving the mouse

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=637185

https://bugzilla.novell.com/show_bug.cgi?id=637185#c0


           Summary: Crash while just moving the mouse
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.4.x
          Platform: x86
        OS/Version: Ubuntu
            Status: NEW
          Severity: Critical
          Priority: P5 - None
         Component: Windows.Forms
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: ciaran at ciarang.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.8)
Gecko/20100722 Firefox/3.6.8

Moving the mouse across the window. Perhaps over the menu.

System.NullReferenceException: Object reference not set to an instance of an
object
  at System.Windows.Forms.MenuTracker.FindItemByCoords
(System.Windows.Forms.Menu menu, Point pt) [0x00000] 
  at System.Windows.Forms.MenuTracker.GetItemAtXY (Int32 x, Int32 y) [0x00000] 
  at System.Windows.Forms.MenuTracker.OnMotion
(System.Windows.Forms.MouseEventArgs args) [0x00000] 
  at System.Windows.Forms.Control.WmMouseMove (System.Windows.Forms.Message& m)
[0x00000] 
  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m)
[0x00000] 
  at System.Windows.Forms.ScrollableControl.WndProc
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.ContainerControl.WndProc
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.Form.WndProc (System.Windows.Forms.Message& m)
[0x00000] 
  at System.Windows.Forms.Control+ControlWindowTarget.OnMessage
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.Control+ControlNativeWindow.WndProc
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, IntPtr
wParam, IntPtr lParam) [0x00000] 


Reproducible: Couldn't Reproduce

Steps to Reproduce:
Very hard to reproduce, I suspect, but may be obvious from the stack trace.
IMO, it should not be possible for an error in that code to take out the entire
application.

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