[Paraview] vtkSMProxy::GetProperty gives segmentation fault

[Utkarsh Ayachit]

Can you verify that the xml for your plugin is valid? Just open in up
in firefox or something to make sure that the xml syntax is correct.

Utkarsh

On Thu, Jan 21, 2010 at 5:13 PM, Erik Rasmussen <rasm1 at rasmsys.com> wrote:
> OS: Ubuntu 8.10 (intrepid)
> PV:  3.6.1
> Qt:  4.5.3
> build:  Debug
>
> I am working with a file-reading filter.  There are no error messages or
> warnings when I compile.  After I build, I copy the filter .so files to the
> bin/plugins location, where they are automatically detected by paraview.
>
> When I choose the File, all goes well.  The usual RequestDataObject and
> RequestInformation methods are executed.  All my debug output looks fine.
>
> When I press the Apply button, I know that RequestData is messaged and it
> seems to finish its work OK.
>
> As an aside, my vtkDebugMacro output now only shows up in the gdb terminal
> output; it stops going to the output messages window of Paraview.  I don't
> know what that means, except that it seems to tell me that something is
> going haywire near the start of RequestData, even though that method seems
> to run fine.  (I suppose I'm not seeing it in the output messages window
> because that window may be buffered?)
>
> The actual crash seems to happen just about when ParaView would normally be
> drawing an empty cube outline on the screen (the reader puts a rectilinear
> grid into the pipeline).
>
> In the traceback (below), it looks like ParaView is messaging vtkSMProxy
> object that has not been instantiated... this=0x0
>
> Has anyone seen this before?  Any suggestions on how to debug further?
>
> Thanks,
> Erik
>
>
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x46fc8e10 (LWP 3572)]
> 0x4014410d in vtkSMProxy::GetProperty (this=0x0, name=0x41f1a66f "Input") at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Servers/ServerManager/vtkSMProxy.h:158
> 158          return this->GetProperty(name, 0);
> (gdb) bt
> #0  0x4014410d in vtkSMProxy::GetProperty (this=0x0, name=0x41f1a66f
> "Input") at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Servers/ServerManager/vtkSMProxy.h:158
> #1  0x41cc9d64 in vtkSMRenderViewProxy::CreateDefaultRepresentation
> (this=0x91dff70, source=0x87b5d30, opport=0)
>    at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Servers/ServerManager/vtkSMRenderViewProxy.cxx:1768
> #2  0x4067b12c in pqObjectBuilder::createDataRepresentation (this=0x8a501a0,
> opPort=0x9b88ca0, view=0x9209cd8, representationType=@0xbfa578f4)
>    at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Qt/Core/pqObjectBuilder.cxx:446
> #3  0x406483b9 in pqDisplayPolicy::createPreferredRepresentation
> (this=0x8aa0da0, opPort=0x9b88ca0, view=0x9209cd8, dont_create_view=false)
>    at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Qt/Core/pqDisplayPolicy.cxx:252
> #4  0x40683dcd in pqPendingDisplayManager::createPendingDisplays
> (this=0x8b4b940, activeview=0x9209cd8) at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Qt/Core/pqPendingDisplayManager.cxx:178
> #5  0x406840e4 in pqPendingDisplayManager::createPendingDisplays
> (this=0x8b4b940) at
> /home/erik/Research/Tools/ParaView/ParaView3.6/Qt/Core/pqPendingDisplayManager.cxx:254
> #6  0x406fd73e in pqPendingDisplayManager::qt_metacall (this=0x8b4b940,
> _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0xbfa57a48)
>    at
> /home/erik/Research/Tools/ParaView/ParaView3.6/build_debug/Qt/Core/moc_pqPendingDisplayManager.cxx:83
> #7  0x418809db in QMetaObject::activate (sender=0x8ebfd80,
> from_signal_index=<value optimized out>, to_signal_index=28, argv=0x0) at
> /var/tmp/qt-x11-src-4.5.3/src/corelib/kernel/qobject.cpp:3104
>
>
>
>
>
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