Problem with Bitmap Heap Scan

Simple select give wrong result when it uses the Bitmap Heap Scan path. <br /><br /><br /> postgres=# CREATE OR REPLACE
FUNCTIONmy_exec_im_test_func(i integer) RETURNS integer AS $$        <br />        BEGIN                <br
/>               RETURN i + 1;<br />        END;<br />$$ LANGUAGE plpgsql;<br />CREATE FUNCTION<br /><br />postgres=#
setenable_seqscan=off;<br />SET<br />postgres=# set enable_indexscan=off;<br />SET<br />postgres=# select proname from
pg_procwhere proname like 'my_pro1';<br />       proname        <br />----------------------<br />
 my_exec_im_test_proc<br/>(1 row)<br /><br />postgres=# explain select proname from pg_proc where proname like
'my_pro1';<br/>                                         QUERY PLAN                             <br />             <br
/>--------------------------------------------------------------------------------<br />-------------<br /> Bitmap Heap
Scanon pg_proc  (cost=4.26..8.27 rows=1 width=64)<br />   Recheck Cond: (proname ~~ 'my_pro1'::text)<br />    -> 
BitmapIndex Scan on pg_proc_proname_args_nsp_index  (cost=0.00..4.26 row<br />s=1 width=0)<br />         Index Cond:
((proname>= 'my'::name) AND (proname < 'mz'::name))<br />(4 rows)<br /><br /><br /><br clear="all" /><br />-- <br
/>RushabhLathia<br /><br /><a href="http://www.EnterpriseDB.com">www.EnterpriseDB.com</a>