[Octave-bug-tracker] [bug #32319] printing sometimes fails with error "gl2ps-renderer: fdopen failed"

[Konstantinos Poulios]

Follow-up Comment #6, bug #32319 (project octave):

In __init_fltk__.cc. line 764 drawing is set to printing mode:

    canvas->print (fid, term);

then in __init_fltk__.cc. line 768 we call:

      mark_modified ();

which triggers graphics redraw that ends up at some canvas->draw
asynchronously.

It seems that

      waitpid (pid);

at line 159 of __fltk_print__.m is not a sufficient guarantee that the code
execution will reach and complete line 160 __init_fltk__.cc:

      rend.draw (gh_manager::get_object (number));

where the actual printing takes place before it closes the pipe at line 161
of __fltk_print__.m:

      pclose (pid);

Maybe we need some other check.

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