Louis-David Mitterrand <cunctator@apartia.ch> writes:
> Is this a known problem?
> template1=> \copy
> psql: xstrdup: cannot duplicate null pointer (internal error)
> styx:~%
> using PG 7.0-beta5 on Linux
^^^^^^^^^^^^
Seems to be fixed in 7.0 release:
regression=# \copy
\copy: arguments required
regards, tom lane