BUG #1272: text + numeric wrong behaviour

The following bug has been logged online:

Bug reference: 1272
Logged by: Damjan Pipan

Email address: damjan(dot)pipan(at)xlab(dot)si

PostgreSQL version: 7.3.2

Operating system: linux 2.4

Description: text + numeric wrong behaviour

Details:

CREATE TABLE a1(
description text,
amount numeric(9,2)
);

INSERT INTO a1 VALUES ('asdasd', 370);
SELECT * FROM a1;

SELECT description::varchar, amount FROM a1;

first select does not return amount, second does.