_xflsbuf
extern int _xflsbuf(FILE *iop);
(void) _xflsbuf(iop);
(void) _xflsbuf(iop);
(void) _xflsbuf(iop);
res = _xflsbuf(iop);
if (_xflsbuf(iop) == EOF) {
if (_xflsbuf(iop) == EOF) {
if (_xflsbuf(iop) == EOF)
if (_xflsbuf(stdout) == EOF) {
if (_xflsbuf(stdout) == EOF) {
extern int _xflsbuf(FILE *iop);
(void) _xflsbuf(iop);