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debugging #39925


From: Doug Stewart
Subject: debugging #39925
Date: Sat, 19 Oct 2013 10:27:28 -0400

 hg id
93e272018df2 tip

Ubuntu 10.04

../configure FFLAGS=-g CFLAGS=-g CXXFLAGS=-g --disable-gui
The GUI does not respond to CONTROL C

While trying to debug #39925 I found something that might or might not be related to this bug.

from the octave prompt I am running:

 

In gdb I 
have  breakpoint #1 at  gl-render.cc:1400   ( draw_axes)
   and breakpoint #2 at  gl-render.cc:2613   (draw_image)

The first Time I run
image (1e7  + [1 2], 1 + [1 2], rand (2));

the break points are :  1 2 1 2
The second time I run the same image
the break points are: 1 2 2 
the 3rd time it is : 1 2 2 2 
the 10th time it is: 1 2 2 2 2 2 2 2 2 2 2 
Etc.

The reason that I saw this is that this bug (#39925) does not happen on the first run  so I was trying multiple runs, and saw this behaviour.

If you run the image command for the 20th time there is no need to  run draw_image 20 times.

If we figure out why this is happening then we might also solve bug #39925
Doug




--
DAS

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