sleep              69 gc/cord/de.c   #  define de_error(s) { fprintf(stderr, s); sleep(2); }
sleep            1016 gc/pthread_support.c #define __d10_sleep sleep
sleep            1020 gc/pthread_support.c int WRAP_FUNC(sleep) (unsigned int seconds)
sleep            1025 gc/pthread_support.c     result = REAL_FUNC(sleep)(seconds);
sleep            2319 src/syslib.c   SCM_RESULT = sleep(seconds);