Changes to functions and triggers

Something changed in 7.02 from 6.3. I used to do this:

CREATE FUNCTION make_date()
RETURNS opaque
AS '/usr/pgsql/modules/make_date.so'
LANGUAGE 'c';
CREATE TRIGGER make_edate
BEFORE INSERT OR UPDATE ON bgroup
FOR EACH ROW
EXECUTE PROCEDURE make_date(edate, aniv, emon, eyear);

This no longer works. I looked and the docs and it seems that this
should work instead.

CREATE FUNCTION make_date(date, int, int, int)
RETURNS opaque
AS '/usr/pgsql/modules/make_date.so'
LANGUAGE 'c';
CREATE TRIGGER make_edate
BEFORE INSERT OR UPDATE ON bgroup
FOR EACH ROW
EXECUTE PROCEDURE make_date('edate', 'aniv', 'emon', 'eyear');

But this gives me;

ERROR: CreateTrigger: function make_date() does not exist

Is this broken now or am I not understanding the documentation? Why
is it looking for a make_date that takes no args?

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D'Arcy J.M. Cain <darcy(at){druid|vex}.net> | Democracy is three wolves
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