[Mono-dev] Mono 1.2.6 SIGSEGV, Windows.Forms issues

Euan MacInnes euan_macinnes at hotmail.com
Wed Dec 12 23:16:39 EST 2007

   After installing the .bin release of 1.2.6, it is now causing a SIGSEGV (after a recompile of the code using the new compiler):


  at (wrapper managed-to-native) System.Drawing.GDIPlus.GdipCreateBitmapFromFile (string,intptr&) 
  at (wrapper managed-to-native) System.Drawing.GDIPlus.GdipCreateBitmapFromFile (string,intptr&) 
  at System.Drawing.Bitmap..ctor (string,bool) 
  at System.Drawing.Bitmap..ctor (string) 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap..ctor (string) 
  at ISE.ProjectManager.LoadButton (string,System.Windows.Forms.ToolStripButton) 
  at ISE.ProjectManager..ctor () 
  at (wrapper remoting-invoke-with-check) ISE.ProjectManager..ctor () 
  at Icarus.IcarusThread.ShowInspector () 
  at (wrapper delegate-invoke) System.MulticastDelegate.invoke_void () 
  at (wrapper runtime-invoke) System.Collections.Generic.GenericComparer`1.runtime_invoke_void (object,intptr,intptr,intptr) 

Native stacktrace:

        mono [0x8170d80]
        mono [0x813d432]
        /opt/mono-1.2.6/lib/libtiff.so.3(TIFFVGetField+0x68) [0x1158848]
        /opt/mono-1.2.6/lib/libtiff.so.3(TIFFGetField+0x2b) [0x115a9cb]
        /opt/mono-1.2.6/lib/libgdiplus.so [0x649212b]
        /opt/mono-1.2.6/lib/libgdiplus.so(GdipLoadImageFromFile+0x1e3) [0x6471b03]
        /opt/mono-1.2.6/lib/libgdiplus.so(GdipCreateBitmapFromFile+0x24) [0x6459e84]
        mono [0x815dbd6]
        mono(mono_runtime_invoke+0x27) [0x80f15d7]
        mono(mono_runtime_delegate_invoke+0x3b) [0x80f1a3b]
        mono [0x80c7cfc]
        mono [0x810fa30]
        mono [0x812d004]
        /lib/libpthread.so.0 [0x8dd44b]
        /lib/libc.so.6(clone+0x5e) [0x80b80e]

Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.


The old 1.2.5 compiler did not generate code with this issue, and if I compile with the old one and run it using the old one (after removing 1.2.6) the application works fine.

If I remove the libtiff.* files from mono1.2.6/lib then it works fine.

However, and far more seriously, Windows.Forms now draws very badly. I've attached a screenshot. You can see all the menuitem and toolstripbutton text is vertically offset and unreadable. Removing the mono.1.2.6 directory and compiling using the old 1.2.5 renders the controls correctly.

This is on Fedora Core 7.



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