[Octave-bug-tracker] [bug #48782] Using drawnow (TERM, FILE, DEBUG_FILE) with qt crashes Octave

[Kai Torben Ohlhus]

Update of bug #48782 (project octave):

                  Status:                    None => Patch Submitted        
             Assigned to:                    None => siko1056               

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Follow-up Comment #1:

I can confirm the crash on Linux and located the source of error in
libinterp/corefcn/gl2ps-print.cc(gl2ps_renderer::draw).


$ ./run-octave --no-gui
octave:1> graphics_toolkit  qt
octave:2> plot (1:2)
octave:3> drawnow ('postscript', 'a.ps', 'a.gp');
error: gl2ps_renderer::draw: Unknown terminal postscript
terminate called after throwing an instance of 'octave_execution_exception'
panic: Aborted -- stopping myself...
attempting to save variables to 'octave-workspace'...
save to 'octave-workspace' complete
Aborted (core dumped)


My proposal for a patch is attached. It chooses GL2PS_PS as default value, as
it is the first one in the defining header


edit /usr/include/gl2ps.h


and a default value + warning is better than a crash. Please verify this
patch. I will commit soon, if there are no complaints. 

(file #38212)
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Additional Item Attachment:

File name: drawnow.patch                  Size:0 KB


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