BUG #1750: recurrentive views terminates connection

The following bug has been logged online:

Bug reference: 1750
Logged by: Bartomiej Rychtarski
Email address: bartek(at)wsb(dot)poznan(dot)pl
PostgreSQL version: 7.3.4
Operating system: red hat 9
Description: recurrentive views terminates connection
Details:

selecting from recurrent views couses termination of all client connections
to the postgres server:

create view test1 as
select 1::integer as id;

create view test2 as
select sum(id) as id from test1;

create or replace view test1 as
select sum(id)::integer as id from test2;

select * from test2;