8cedf6a1b9
The sizeof() call should reference buffer.data, because that's the buffer we're reading data into, not the whole PGAlignedBuffer union. This was introduced by 44cac93464, which replaced the simple buffer with a PGAlignedBuffer field. It's benign, because the buffer is the largest field of the union, so the sizes are the same. But it's easy to trip over this in a patch, so fix and backpatch. Commit 44cac93464 went into 12, but that's EOL. Backpatch-through: 13 Discussion: https://postgr.es/m/928bdab1-6567-449f-98c4-339cd2203b87@vondra.me
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/.