SIG_ERR          6552 src/simh/scp.c if (signal (SIGINT, int_handler) == SIG_ERR) {          /* set WRU */
SIG_ERR          6561 src/simh/scp.c if (signal (SIGHUP, int_handler) == SIG_ERR) {          /* set WRU */
SIG_ERR          6570 src/simh/scp.c if (signal (SIGTERM, int_handler) == SIG_ERR) {         /* set WRU */