GDB log example. this is what one typically sees. I edited out the private source code info. A message like that can easily send one chasing wild geese when he is hunting for a fault.
(gdb) bt
#0 c::f (this=0x0, dmxData=0x19cea20 "")
at <source location>
#1 0x0182e5e0 in c::f (this=0x1a1e860,
enabledPorts=0x48015cb8)
at <source location>
#2 0x0182e4c0 in c::f (this=<optimized out>)
at <source location>
#3 0x0181fdd8 in c::f (this=<optimized out>)
at <source location>
#4 0x0181faf4 in c::f (arg=0x1a1e860)
at <source location>
#5 0x0190ff20 in start (p=0x48015d40) at src/thread/pthread_create.c:104
#6 0x01922e54 in clone ()
Backtrace stopped: frame did not save the PC
(gdb)