Looking at some of the coding choices you made here, I see that you're making a hard assumption that called functions never scribble on their fcinfo->arg/argnull arrays. I do not believe that we've ever had such an assumption before. Are we comfortable with that? If so, we'd better document it.
regards, tom lane -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers