# define _cnt _r /* Retch */
# define _filbuf __srget /* Puke */
# define DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
# define _cnt _r /* Retch */
# define _filbuf __srget /* Puke */
# define DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
-#ifdef SCO_5_STDIO
-# define _ptr __ptr
-# define _cnt __cnt
-# define _base __base
-# define _filbuf(fp) ((fp)->__cnt = 0, __filbuf(fp))
-# define DEFINED__FILBUF_TO_SOMETHING_SPECIFIC
+# if defined __CYGWIN__
+ /* Cygwin's stdio.h does not declare __srget(). */
+ int __srget(FILE *);
+# endif /* __CYGWIN__ */