Debugging software including background processes

[SF Markus Elfring]

Hello,

I would like to debug specific software occasionally which uses also
background processes (on my openSUSE Tumbleweed system).

* Can the tool "gdb 7.9-3.1" be configured to start detailed debugging
  if another background process will be started?

* How can a corresponding backtrace be collected and analysed if a subprocess
  might have failed by a segmentation fault for example?

Regards,
Markus