having bug report

* subqueries containing HAVING return incorrect results

select istat from comuni where istat in (
select istat from comuni group by istat having count(istat) > 1
);
ERROR:  rewrite: aggregate column of view must be at rigth side in qual

select istat from comuni where istat in (
select istat from comuni group by istat having 1 < count(istat)
);
ERROR:  pull_var_clause: Cannot handle node type 108

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PostgreSQL 6.5.0 on i586-pc-linux-gnu, compiled by gcc 2.7.2.3
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Jose'