Re: [Chicken-users] segfault using cairo/SDL

[Markus Klotzbuecher]

Hi Christian,

On Thu, Dec 22, 2011 at 09:41:05AM +0100, Christian Kellermann wrote:
> * Markus Klotzbuecher <address@hidden> [111221 21:12]:
> > Dear All,
> > 
> > I'm trying to use the cairo and sdl eggs for a small visualization
> > tool. One thing I would like to do is to use the mouse to move around
> > the current figure by clicking and holding it. However, I am getting
> > frequent segfaults after a few seconds of this moving around. The
> > crash happens both when running compiled and interpreted. Below an
> > slightly modified version of the test-cairo.scm from the cairo egg
> > that implements this "dragging" (I would have pasted it to
> > http://paste.call-cc.org/ , but the service seems down)
> > 
> > Is anyone else using these eggs and has seen such problems? Does
> > anyone have a suggestions how to track this down?
> 
> Yes, I am currently using it for a small doodle framework for easy
> visualisations and games. I haven't looked (yet) into mouse support.
> The SDL egg is rather dusty and there might be such dark corners.
> 
> I will file this as a bug and will have a look at it during the
> holidays.

Great, much appreciated!

> If you find the time you could build a chicken with debugging
> information (add DEBUGBUILD=1 to the make call) and show be the
> backtrace of that. This might be of more help than the standard
> backtrace.

Fine, i'll try to do that during the holidays!

> Thanks for your help!

Thank you!

Markus