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We hadn't noticed this because (a) few people feed invalid timezone abbreviation files to the server, and (b) in typical scenarios guc.c would throw ereport(ERROR) and then transaction abort handling would silently clean up the leaked file reference. However, it was possible to observe file leakage warnings if one breaks an already-active abbreviation file, because guc.c does not throw ERROR when loading supposedly-validated settings during session start or SIGHUP processing. Report and fix by Kyotaro Horiguchi (cosmetic adjustments by me) Discussion: https://postgr.es/m/20220530.173740.748502979257582392.horikyota.ntt@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/.