rb_fd_resize      344 include/ruby/intern.h #define rb_fd_resize(n, f)	((void)(f))
rb_fd_resize      358 include/ruby/intern.h #define rb_fd_resize(n, f)	((void)(f))
rb_fd_resize     3472 thread.c       rb_fd_resize(int n, rb_fdset_t *fds)