fdwalk
(void) fdwalk(closefunc, NULL);
(void) fdwalk(closefunc, NULL);
(void) fdwalk(fdcloser, NULL);
(void) fdwalk(close_except, &script_fd);
(void) fdwalk(close_inuse, &script_fd);
(void) fdwalk(closefunc, NULL);
(void) fdwalk(closefd_walk, &s);
(void) fdwalk(closefd_walk, NULL);
(void) fdwalk(closefd_walk, NULL);
(void) fdwalk(do_count, &nofiles);
(void) fdwalk(closefd_walk, &lowest);
(void) fdwalk(void_close, &pfd[1]);
(void) fdwalk(close_func, &slavefd);
extern int fdwalk(int (*)(void *, int), void *);
(void) fdwalk(void_close, &low);
(void) fdwalk(&_z_close_file_descriptors, (void *)a_fds);
(void) fdwalk(&_z_close_file_descriptors, (void *)a_fds);
(void) fdwalk(verify_fdwalk_cb, &maxfd);