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There are cases where we cannot / do not want to error out for invalidly encoded input. In such cases it can be useful to replace e.g. an incomplete multi-byte characters with bytes that will trigger an error when getting validated as part of a larger string. Unfortunately, until now, for some encoding no such sequence existed. For those encodings this commit removes one previously accepted input combination - we consider that to be ok, as the chosen bytes are outside of the valid ranges for the encodings, we just previously failed to detect that. As we cannot add a new field to pg_wchar_table without breaking ABI, this is implemented "in-line" in the newly added function. Author: Noah Misch <noah@leadboat.com> Reviewed-by: Andres Freund <andres@anarazel.de> Backpatch-through: 13 Security: CVE-2025-1094 |
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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/.