int (*lwr_receive_ungetc)(int) = stdin_ungetc;
int (*receive_getc)(unsigned) = stdin_getc;
uschar * (*receive_getbuf)(unsigned *) = NULL;
-void (*receive_get_cache)(void)= NULL;
+void (*receive_get_cache)(unsigned) = NULL;
int (*receive_ungetc)(int) = stdin_ungetc;
int (*receive_feof)(void) = stdin_feof;
int (*receive_ferror)(void) = stdin_ferror;