BUG #7666: Unkown column name on error message

The following bug has been logged on the website:

Bug reference:      7666
Logged by:          ROBSON
Email address:      robsonr.alencar@gmail.com
PostgreSQL version: 9.0.0
Operating system:   linux - ubuntu - pt_Br
Description:        =


After trying an insert on table, a error message is provided, but the column
name is not inserted in the message. Example:

"org.postgresql.util.PSQLException: ERRO: valor =C3=A9 muito longo para tipo
character varying(20)"

Java application, using JDBC Driver for PostgreSQL:
postgresql-9.1-901.jdbc4.jar

The column name is needed for best debug result.