On Tue, 27 Aug 2002 pgsql-bugs@postgresql.org wrote:
> Laurent HERVE (laurent-herve@club-internet.fr) reports a bug with a severity of 2
> The lower the number the more severe it is.
>
> Short Description
> one NULL function parameter makes all other NULL
>
> Long Description I don't know if this is really a bug but it seems
> like for me and it is very annoying. I checked all release notes of
> recent releases to find some king of bug fix for that, without sucess.
> I know, my postgresql version is a little bit old, but I cannot
> upgrade know. But I just want to know if that bug is known and
> corrected in recent release. So here it is :
Fixed as of 7.2 IIRC. (Although you can make a function strict
to get the older behavior)