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GetFinalPathNameByHandleA() cannot be used in compilation environments where _WIN32_WINNT < 0x0600, meaning at least Windows XP used by some buildfarm members under MinGW that Postgres still needs to support. This was reported as a compilation warning by the buildfarm, but this is actually worse than the report as the code would have not worked. Instead, this switches to GetFileInformationByHandle() that is able to fail for standard streams and succeed for redirected ones, which is what we are looking for herein the code emulating fstat(). We also know that it is able to work in all the environments still supported, thanks to the existing logic of win32stat.c. Issue introduced by 10260c7, so backpatch down to 14. Reported-by: Justin Pryzby, via buildfarm member jacana Author: Michael Paquier Reviewed-by: Juan José Santamaría Flecha Discussion: https://postgr.es/m/20211129050122.GK17618@telsasoft.com Backpatch-through: 14
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/.