#define PERLIO_F_TEMP 0x00100000
#define PERLIO_F_OPEN 0x00200000
#define PERLIO_F_FASTGETS 0x00400000
+#define PERLIO_F_TTY 0x00800000
#define PerlIOBase(f) (*(f))
#define PerlIOSelf(f,type) ((type *)PerlIOBase(f))
extern IV PerlIOBase_fill (PerlIO *f);
extern IV PerlIOBase_close (PerlIO *f);
extern void PerlIOBase_setlinebuf(PerlIO *f);
+extern void PerlIOBase_flush_linebuf(void);
extern IV PerlIOBase_noop_ok (PerlIO *f);
extern IV PerlIOBase_noop_fail (PerlIO *f);