flush_before_seek  445 io.c           static rb_io_t *flush_before_seek(rb_io_t *fptr);
flush_before_seek  580 io.c               flush_before_seek(fptr);
flush_before_seek  784 io.c           #define io_seek(fptr, ofs, whence) (errno = 0, lseek(flush_before_seek(fptr)->fd, (ofs), (whence)))
flush_before_seek  785 io.c           #define io_tell(fptr) lseek(flush_before_seek(fptr)->fd, 0, SEEK_CUR)