SIG_ERR          6509 src/simh/scp.c if (signal (SIGINT, int_handler) == SIG_ERR) {          /* set WRU */
SIG_ERR          6518 src/simh/scp.c if (signal (SIGHUP, int_handler) == SIG_ERR) {          /* set WRU */
SIG_ERR          6527 src/simh/scp.c if (signal (SIGTERM, int_handler) == SIG_ERR) {         /* set WRU */