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The column 'subskiplsn' uses TYPALIGN_DOUBLE (which has 4 bytes alignment on AIX) for storage. But the C Struct (Form_pg_subscription) has 8-byte alignment for this field, so retrieving it from storage causes an unaligned read. To fix this, we rearranged the 'subskiplsn' column in the catalog so that it naturally comes at an 8-byte boundary. We have fixed a similar problem in commit f3b421da5f. This patch adds a test to avoid a similar mistake in the future. Reported-by: Noah Misch Diagnosed-by: Noah Misch, Masahiko Sawada, Amit Kapila Author: Masahiko Sawada Reviewed-by: Noah Misch, Amit Kapila Discussion: https://postgr.es/m/20220401074423.GC3682158@rfd.leadboat.com https://postgr.es/m/CAD21AoDeScrsHhLyEPYqN3sydg6PxAPVBboK=30xJfUVihNZDA@mail.gmail.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/.