If true, trap signals to handle them in octopus itself and print a custom backtrace. If false, do not trap signals; then, core dumps can be produced or gdb can be used to stop at the point a signal was produced (e.g. a segmentation fault).
basic/messages.F90 : 171
call parse_variable(global_namespace, 'DebugTrapSignals', .true., trap_signals)