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A compressed stream may end with an empty packet, and PGP decompression finished before reading this empty packet in the remaining stream. This caused a failure in pgcrypto, handling this case as corrupted data. This commit makes sure to consume such extra data, avoiding a failure when decompression the entire stream. This corner case was reproducible with a data length of 16kB, and existed since its introduction in e94dd6a. A cheap regression test is added to cover this case. Thanks to Jeff Janes for the extra investigation. Reported-by: Frank Gagnepain Author: Kyotaro Horiguchi, Michael Paquier Discussion: https://postgr.es/m/16476-692ef7b84e5fb893@postgresql.org Backpatch-through: 9.5
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/.