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[Octave-bug-tracker] [bug #34631] MinGW - fubarred Octave 3.4.+ after ma


From: Nitzan Arazi
Subject: [Octave-bug-tracker] [bug #34631] MinGW - fubarred Octave 3.4.+ after many plots
Date: Sun, 30 Oct 2011 20:35:39 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.874.106 Safari/535.2

Follow-up Comment #6, bug #34631 (project octave):

I have explored this a bit more and could identify different symptoms from
which I can learn that there are at least two type of problems !

Symptom 1 - font related errors

The font related errors are for sure common for both gnuplot and fltk. This
can be reproduced with 3.4.3 with both backends by opening a single figure and
generating multiple text objects:

figure;
plot(1:10);
max_texts=504;
for ti=1:max_texts
  ti
  text(rand(1,1)*10,rand(1,1)*10,sprintf('test_%03u',ti));
end

I could reproduce it on two different machines, an win7-x64 and an xp sp3.

On both machines it fails: with fltk on text object 504 and  with gnuplot on
text object 503.

With 3.2.4 - it doen't happen with gnuplot but with high number of texts
graphics response became very slow.


Symptom 2 - multitude figures problems

max_figures=86;
for ii=1:max_figures,
  ii
  figure;
  plot(1:10);
end


gnuplot:
On WIN7-X64/3.4.3/gnuplot and XP-SP3/3.4.3/gnuplot, I could reproduce it with
max_figures>=86
On Win7-X64/3.2.4/gnuplot and XP-SP3/3.4.3/gnuplot, I could reproduce it with
max_figures>=256

The error I am getting is:
> error: fputs: invalid stream number = -1

fltk:
On WIN7-X64/3.4.3/fltk I can't since the font related issues appears earlier
at figure 102 
On WIN7-X64/3.2.4/fltk I can plot many figures but some remain blank.

On the XP-SP3/3.4.3/fltk and XP-SP3/3.2.4/fltk the problems are much more
severe:
Octave crashes (disappears) inconsistently between figure 11 to 35. It seems
that pause commands between the figure and plot commands tend to get more
figures before crashing but I am not sure.
I didn't have a chance to repeat these tests on another XP machine (to
eliminate the chance that this XP machine may have a problem with its graphics
driver).

I beleive that the font related issues will be easy to be tracked.
The multitude figures issues are not so severe except for the XP/fltk !
(Please repeat the XP/fltk to eliminate the chance that my machine has another
problem with system or graphics)

Nitzan

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