
PgStat_HashKey is currently initialized in a way that could result in random data if the structure has any padding bytes. The structure has no padding bytes currently, fortunately, but it could become a problem should the structure change at some point in the future. The code is changed to use some memset(0) so as any padding would be handled properly, as it would be surprising to see random failures in the pgstats entry lookups. PgStat_HashKey is a structure internal to pgstats, and an ABI change could be possible in the scope of a bug fix, so backpatch down to 15 where this has been introduced. Author: Bertrand Drouvot Reviewed-by: Jelte Fennema-Nio, Michael Paquier Discussion: https://postgr.es/m/Zyb7RW1y9dVfO0UH@ip-10-97-1-34.eu-west-3.compute.internal Backpatch-through: 15
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.