[fprint] Problem with Async API: program crashing if I put my finger to scanner for long time

[Bastien Nocera]

On Wed, 2011-03-02 at 04:23 +0200, Nicholas Shatokhin wrote:
> I'm creating fprint qt4 library:  
> https://github.com/NicholasShatokhin/fprint_qt
> 
> It's working good but it has one problem. If I put my finger on scanner  
> (AES1610) for a few seconds (in two-three times longer that it need for  
> swiping) program crashes. What's wrong? I use async API and watched how it  
> using in fprint_demo. In synchronous API this problem not exists. In  
> fprint_demo too. But my program crashes. Please, help me, it's very  
> difficult for me to read gtk+ code so I can't find solution by myself.

Backtrace? Did you try running it under valgrind?