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Commit 5579388d removed code that supplied a fallback implementation of getaddrinfo(), which was dead code on modern systems. One tiny piece of the removed code was still doing something useful on Windows, though: that OS's own gai_strerror()/gai_strerrorA() function returns a pointer to a static buffer that it overwrites each time, so it's not thread-safe. In rare circumstances, a multi-threaded client program could get an incorrect or corrupted error message. Restore the replacement gai_strerror() function, though now that it's only for Windows we can put it into a win32-specific file and cut it down to the errors that Windows documents. The error messages here are taken from FreeBSD, because Windows' own messages seemed too verbose. Back-patch to 16. Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com> Discussion: https://postgr.es/m/CA%2BhUKGKz%2BF9d2PTiXwfYV7qJw%2BWg2jzACgSDgPizUw7UG%3Di58A%40mail.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/.