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The C standard says that the second and third arguments of a conditional operator shall be both void type or both not-void type. The Windows version of INTERRUPTS_PENDING_CONDITION() got this wrong. It's pretty harmless because the result of the operator is ignored anyway, but apparently recent versions of MSVC have started issuing a warning about it. Silence the warning by casting the dummy zero to void. Reported-by: Christian Ullrich <chris@chrullrich.net> Author: Bryan Green <dbryan.green@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Discussion: https://postgr.es/m/cc4ef8db-f8dc-4347-8a22-e7ebf44c0308@chrullrich.net Backpatch-through: 13
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/.