possible bug in CREATE FUNCTION

hello everybody,

I was trying playing with the CREATE FUNCTION statement in psql when I made
a copy/paste mistake : the function body was empty. The error message was
strange:

guanabara:~> psql
Password:
Welcome to psql, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help on internal slash commands
\g or terminate with semicolon to execute query
\q to quit

decimami=# CREATE FUNCTION foo() RETURNS text AS ' ' LANGUAGE 'SQL' ;
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
!#

Is this a feature ? An error message like 'function body empty' wouldn't be
better ?

MD.