Stage segmentation fault

I tried to get into the stage code to solve a crash of stage on  
unsubscribing interfaces (id 2989947 in bug tracker).

It seems that something is messed up with the data structure of stage if  
the Model::Unsubscribe() method is called. To get into it I uncommented  
the already present debug output of this method and get the following  
output:

accepted TCP client 0 on port 6665, fd 7
subscribe to r0.laser:0 subs: 2
stage driver setup
unsubscribe from r0.laser:0 subs: 1
unsubscribe from r0 subs: 0
unsubscribe from r0.laser:0 subs: 0
unsubscribe from r0 subs: -1
unsubscribe from r0 subs: -2
unsubscribe from r0 subs: -3
Stage driver has been shutdown
Segmentation fault

(At first I subscribed the laser and then I released this interface.)

I'm not sure, but maybe the call of Driver::Unsubscribe(addr) in  
StgDriver::Unsubscribe causes a mistakenly release of the whole robot. Is  
anybody familiar enough with the code to say whether the output of  
Model::Unsubscribe() is ordinary?


Daniel

-- 
Daniel Dube
Eberhard-Karls-Universität Tübingen
Lehrstuhl Rechnerarchitektur
Sand 1, D-72076 Tübingen

Telefon: +49-7071-2977176, Fax: +49-7071-295091
E-Mail: [email protected]
http://www.ra.cs.uni-tuebingen.de/

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