sigtstp_action    157 src/execute.c          struct sigaction sigtstp_action;
sigtstp_action    159 src/execute.c          memset (&sigtstp_action, 0, sizeof (sigtstp_action));
sigtstp_action    163 src/execute.c          sigaction (SIGTSTP, &startup_handler, &sigtstp_action);
sigtstp_action    168 src/execute.c          sigaction (SIGTSTP, &sigtstp_action, NULL);