[matlis@t410 ~]$ gdb -batch -ex "set follow-fork-mode child" -ex "run" -ex "bt" --args indiserver -r 0 -v indi_joystick indi_simulator_ccd indi_simulator_telescope
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
2020-10-15T13:58:47: startup: /usr/bin/indiserver -r 0 -v indi_joystick indi_simulator_ccd indi_simulator_telescope 
[Attaching after Thread 0x7ffff7db0740 (LWP 10231) fork to child process 10235]
[New inferior 2 (process 10235)]
[Detaching after fork from parent process 10231]
[Inferior 1 (process 10231) detached]
2020-10-15T13:58:47: Driver indi_joystick: pid=10235 rfd=3 wfd=6 efd=7
2020-10-15T13:58:47: Driver indi_simulator_ccd: pid=10236 rfd=4 wfd=9 efd=10
[Thread debugging using libthread_db enabled]
2020-10-15T13:58:47: Driver indi_simulator_telescope: pid=10237 rfd=5 wfd=12 efd=13
Using host libthread_db library "/lib64/libthread_db.so.1".
2020-10-15T13:58:47: listening to port 7624 on fd 8
process 10235 is executing new program: /usr/bin/indi_joystick
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Telescope Simulator.EQUATORIAL_EOD_COORD
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Telescope Simulator.TELESCOPE_INFO
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Telescope Simulator.GEOGRAPHIC_COORD
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Telescope Simulator.TELESCOPE_PIER_SIDE
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Rotator Simulator.ABS_ROTATOR_ANGLE
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Focuser Simulator.ABS_FOCUS_POSITION
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Focuser Simulator.FOCUS_TEMPERATURE
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on CCD Simulator.FILTER_SLOT
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on CCD Simulator.FILTER_NAME
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on SQM.SKY_QUALITY
2020-10-15T13:58:47: Driver indi_simulator_telescope: HaAxis: TrackRate 1, trackingRateDegSec 15.041067 arcsec
2020-10-15T13:58:47: Driver indi_simulator_ccd: snooping on Focuser Simulator.FWHM
2020-10-15T13:58:47: Driver indi_simulator_telescope: snooping on GPS Simulator.GEOGRAPHIC_COORD
2020-10-15T13:58:47: Driver indi_simulator_telescope: snooping on GPS Simulator.TIME_UTC
2020-10-15T13:58:47: Driver indi_simulator_telescope: snooping on Dome Simulator.DOME_PARK
2020-10-15T13:58:47: Driver indi_simulator_telescope: snooping on Dome Simulator.DOME_SHUTTER
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
2020-10-15T13:59:08: Client 0: new arrival from 127.0.0.1:58384 - welcome!
[New Thread 0x7ffff6f03640 (LWP 10265)]

Thread 2.2 "indi_joystick" received signal SIGABRT, Aborted.
[Switching to Thread 0x7ffff6f03640 (LWP 10265)]
2020-10-15T13:59:09: Client 11: new arrival from 127.0.0.1:58386 - welcome!
0x00007ffff790ebc5 in raise () from /lib64/libc.so.6
#0  0x00007ffff790ebc5 in raise () from /lib64/libc.so.6
#1  0x00007ffff78f78a4 in abort () from /lib64/libc.so.6
#2  0x00005555555590fd in JoyStickDriver::readEv() ()
#3  0x0000555555559294 in JoyStickDriver::loop(void*) ()
#4  0x00007ffff7def3f9 in start_thread () from /lib64/libpthread.so.0
#5  0x00007ffff79d2b03 in clone () from /lib64/libc.so.6
2020-10-15T13:59:09: Client 14: new arrival from 127.0.0.1:58388 - welcome!
2020-10-15T13:59:09: Driver indi_joystick: stderr EOF
Child process 10235 died
<delProperty device="Joystick"/>
2020-10-15T13:59:09: Driver indi_joystick: Terminated after #0 restarts.
[matlis@t410 ~]$