BUG #4147: pg_constraint table data retrieval error

["Arun J M" <arun(dot)jaganathan(at)alliedgroups(dot)com>]

The following bug has been logged online:

Bug reference:      4147
Logged by:          Arun J M
Email address:      arun(dot)jaganathan(at)alliedgroups(dot)com
PostgreSQL version: 8.3
Operating system:   Windows XP Pro SP2
Description:        pg_constraint table data retrieval error
Details: 

While we are retrieving the values from the Pg_constraint table using the
confkey column as mentioned below the query returns the null value, But it
should return the appropriate value from the small int array..

Executed Query: 

select pg_constraint.confkey[1] from pg_catalog.pg_constraint

Expected Result:

{1}
{111}
{444}	

Result Obtained: 

Null values


This is not working on pgadmin/sql , psql , phpadmin/sql. 

But the same query is working while executing from php code.