BACKTRACE_SKIP     48 src/simh/backtrace_func.c #  if !defined(BACKTRACE_SKIP)
BACKTRACE_SKIP    167 src/simh/backtrace_func.c   backtrace_full(state, BACKTRACE_SKIP, full_callback, error_callback, NULL);
BACKTRACE_SKIP     49 src/simh/backtrace_main.c #   if !defined(BACKTRACE_SKIP)