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These code paths should not be reached normally, but if they are an error with "(null)" as information for the collation provider would show up if no locale is set, while we can assume that we are referring to libc. This refactors the code so as the provider is always reported even if no locale is set. The name of the function where the error happens is added, while on it, as it can be helpful for debugging. Issue introduced by d87d548cd030, so backpatch down to 16. Author: Michael Paquier, Ranier Vilela Reviewed-by: Jeff Davis, Kyotaro Horiguchi Discussion: https://postgr.es/m/7073610042fcf97e1bea2ce08b7e0214b5e11094.camel@j-davis.com Backpatch-through: 16
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/.