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[Octave-bug-tracker] [bug #31931] figure (1, "visible", "off") -> Bus er

From: Søren Hauberg
Subject: [Octave-bug-tracker] [bug #31931] figure (1, "visible", "off") -> Bus error
Date: Thu, 20 Jan 2011 22:34:14 +0000
User-agent: Mozilla/5.0 (X11; U; Linux i686; da-DK; rv: Gecko/20101206 Ubuntu/10.10 (maverick) Firefox/3.6.13

Follow-up Comment #16, bug #31931 (project octave):

I am seeing similar behaviour (as noted in bug #32165). For me the crash
happens in line 136 in fltk_backend.cc

  glMatrixMode (GL_PROJECTION);

A bit of Google'ing tells me that this usually happens if the frame buffer is
not initialised. I tried seeing if I could call glCheckFrameBufferStatus to
determine this, but I never managed to persuade the compiler that such a
function exists :-(

Is it possible that when we don't have a plot to show, we don't have a frame
buffer either?



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