htdig port?

has anyone else used the htdig port on 5.2?
it compiled without issues, but i find that its
always crashing in its DB2 code for maintaining
its database.

If i change its makefile to add optimisation (-O2),
it no longer core dumps, but i get this instead:
DB2 problem...: /usr/local/share/htdig/database/db.docdb: page 0: reference
count overflow

The db.docdb file it creates consumes the whole disk,
just for the first indexed document.