Hi Felix, first off did you install stable, trunk or latest? Furthermore, gdb will not work for pyhton nodes, sorry I did not realize before it was about python. You would need to use pdb instead. Can you run roswtf and post please? cheers, D. On Fri, May 7, 2010 at 8:05 PM, Felix Ruess wrote: > Dejan, > > I attached the full backtrace in case this is of any help... > Thanks a lot! > > Cheers, Felix > > On Fri, May 7, 2010 at 7:49 PM, Felix Ruess wrote: >> Tully, >> >> thanks for the hint! I did a svn up in joystick_drivers and there now >> it is already added in the dep file :-) >> And yes, that is not the problem causing the segfault. >> >> Dejan, >> >> finally found out how to debug the python program with gdb (removed >> the node from the launch file and ran gdb python seperately). >> here is the trace: >> >> (gdb) run turtle_tf_listener.py __name:=turtle_listener >> Starting program: /usr/bin/python turtle_tf_listener.py __name:=turtle_listener >> [Thread debugging using libthread_db enabled] >> [New Thread 0x25a8b70 (LWP 7159)] >> [New Thread 0x2da9b70 (LWP 7160)] >> [New Thread 0x35b6b70 (LWP 7161)] >> [Thread 0x35b6b70 (LWP 7161) exited] >> [New Thread 0x35b6b70 (LWP 7166)] >> [New Thread 0x3db7b70 (LWP 7170)] >> [New Thread 0x45b8b70 (LWP 7173)] >> [New Thread 0x4db9b70 (LWP 7175)] >> [Thread 0x45b8b70 (LWP 7173) exited] >> >> Program received signal SIGILL, Illegal instruction. >> [Switching to Thread 0x4db9b70 (LWP 7175)] >> 0x0051c203 in ros::TimeBase::fromSec >> (obj=