extern void exim_setugid(uid_t, gid_t, BOOL, uschar *);
extern int exim_tvcmp(struct timeval *, struct timeval *);
extern void exim_wait_tick(struct timeval *, int);
+extern int exp_bool(address_item *addr,
+ uschar *mtype, uschar *mname, unsigned dgb_opt, uschar *oname, BOOL bvalue,
+ uschar *svalue, BOOL *rvalue);
extern BOOL expand_check_condition(uschar *, uschar *, uschar *);
extern uschar *expand_string(uschar *);
extern uschar *expand_string_copy(uschar *);