Re: BUG #4794: server closed the connection unexpectedly

Markus Meyer wrote:
> The following bug has been logged online:
>
> Bug reference:      4794
> Logged by:          Markus Meyer
> Email address:      markus@7val.com
> PostgreSQL version: 8.3.3
> Operating system:   Debian 2.6.22.19-vs2.2.0.7
> Description:        server closed the connection unexpectedly
> Details:
>
> If i make an
>
> SELECT xmlconcat(('<datanode>' || NULL || '</datanode>')::xml);
>
> follows
>
> server closed the connection unexpectedly
>         This probably means the server terminated abnormally
>         before or while processing the request.
>
>

seems to work fine on 8.3.7

that inner expression -is- a NULL, so xmlconcat(NULL)  is itself a
null.  not much use.