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Unlike commands such as CREATE DATABASE, ProcessStartupPacket()
does not perform multibyte-aware truncation of overlength names.
This means that connection attempts might fail even if the user
provides the same overlength names that were used in CREATE
DATABASE, CREATE ROLE, etc. Ideally, we'd do the same multibyte-
aware truncation in both code paths, but it doesn't seem worth the
added complexity of trying to discover the encoding of the names.
Instead, let's simply skip truncating the names in the startup
packet and let the user/database lookup fail later on. With this
change, users must provide the exact names stored in the catalogs,
even if the names were truncated.
This reverts commit d18c1d1f51.
Author: Bertrand Drouvot
Reviewed-by: Kyotaro Horiguchi, Tom Lane
Discussion: https://postgr.es/m/07436793-1426-29b2-f924-db7422a05fb7%40gmail.com
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: https://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. 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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.