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Otherwise, if FDDEBUG is enabled, the debugging output fails because it tries to read the fileName, which isn't set up yet (and should in fact always be NULL). AFAICT, this has been wrong since Berkeley. Before 96bf88d52, it would accidentally fail to crash on platforms where snprintf() is forgiving about being passed a NULL pointer for %s; but the file name intended to be included in the debug output wouldn't ever have shown up. Report and fix by Greg Nancarrow. Although this is only visibly broken in custom-made builds, it still seems worth back-patching to all supported branches, as the FDDEBUG code is pretty useless as it stands. Discussion: https://postgr.es/m/CAJcOf-cUDgm9qYtC_B6XrC6MktMPNRby2p61EtSGZKnfotMArw@mail.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/.