BUG #5484: sum() bug

The following bug has been logged online:

Bug reference: 5484
Logged by: Sergey
Email address: viras(at)yandex(dot)ru
PostgreSQL version: 8.4.4
Operating system: FreeBSD 7.3
Description: sum() bug
Details:

Function sum() bug.
8849.15+6464.57=15313.72
But sum()=15313.7

[root(at)proxy ~]# psql -U pgsql megafon
psql (8.4.4)
Type "help" for help.

megafon=# SELECT version();
version

----------------------------------------------------------------------------
-----------------------------
PostgreSQL 8.4.4 on i386-portbld-freebsd7.3, compiled by GCC cc (GCC) 4.2.1
20070719 [FreeBSD], 32-bit
(1 row)

megafon=#
megafon=# SELECT * from aaa;
num
---------
8849.15
6464.57
(2 rows)

megafon=# SELECT sum(num) from aaa;
sum
---------
15313.7
(1 row)

megafon=#