+ if (prepwrite(fp) != 0)
+ goto error;
+ uio.uio_iov = &iov;
+ uio.uio_iovcnt = 1;
+ iov.iov_base = buf;
+ do {
+ nbytes = __wcsnrtombs(buf, &wsp, SIZE_T_MAX, sizeof(buf),
+ &fp->_mbstate, loc);
+ if (nbytes == (size_t)-1)
+ goto error;
+ iov.iov_len = uio.uio_resid = nbytes;
+ if (__sfvwrite(fp, &uio) != 0)
+ goto error;
+ } while (wsp != NULL);