[Octave-bug-tracker] [bug #41747] Octave crashes if you try to plot and your video card is not configured for OpenGL

[Andreas Weber]

Update of bug #41747 (project octave):

                  Status:               Confirmed => Patch Submitted        
             Assigned to:                    None => andy1978               

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Follow-up Comment #5:

I would suggest this patch for stable:


+++ b/libinterp/dldfcn/__init_fltk__.cc Thu Jan 01 20:56:15 2015 +0100
@@ -929,7 +929,9 @@
 
   void show_canvas (void)
   {
-    if (fp.is_visible ())
+    if (! canvas->can_do ())
+      error ("unable to plot due to insufficient GL support");
+    else if (fp.is_visible ())
       {
         canvas->show ();
         canvas->make_current ();


This should also avoid the segfault in #43183 which I've marked as duplicate
of this report.


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