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90857b48e1
This is necessary to avoid long-term memory leakage, because the main loop in PostgresMain expects to be executing in MessageContext, and hence is a bit sloppy about freeing stuff that is only needed for the duration of processing the current client message. The known case of an actual leak is when encoding conversion has to be done on the incoming command string, but there might be others. Per report from Per-Olov Esgard. Back-patch to 9.0, where the bug was introduced by the LISTEN/NOTIFY rewrite.
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Changes between all PostgreSQL releases are recorded in the file HISTORY. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.