backend dies when a user defined type returns null

Hi,

I created myself a user defined type following the example in the
Postgres programmer's guide.

In the example in chapter 5 it shows that the input function for the
user defined type returns null when the input type doesn't match the
correct format.

I do that for input strings that don't match my strict n.n.n format ( ex
3.2.1) but it causes the backend to die.

For example, this query causes it to die:

select * from collections where version='3.2'

But this one works because it is in the correct format:

select * from collections where version='3.2.1'

Am I doing something wrong?

Thanks

Patrick

--
________________________________________
Patrick Robin
patrickr(at)fa(dot)disney(dot)com
Walt Disney Feature Animation
500 South Buena Vista Street
Burbank,California 91521-4817