extern uschar *b64encode(uschar *, int);
extern int b64decode(uschar *, uschar **);
extern int bdat_getc(unsigned);
+extern int bdat_ungetc(int);
extern void bdat_flush_data(void);
extern void bits_clear(unsigned int *, size_t, int *);
extern void debug_printf_indent(const char *, ...) PRINTF_FUNCTION(1,2);
extern void debug_print_string(uschar *);
extern void debug_print_tree(tree_node *);
-extern void debug_vprintf(const char *, va_list);
+extern void debug_vprintf(int, const char *, va_list);
extern void decode_bits(unsigned int *, size_t, int *,
uschar *, bit_table *, int, uschar *, int);
extern address_item *deliver_make_addr(uschar *, BOOL);