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We can allow this macro to accept either abbreviated or non-abbreviated allocation parameters by making use of __VA_ARGS__. As noted by Andres Freund, it's unlikely that any compiler would have __builtin_constant_p but not __VA_ARGS__, so this gives up little or no error checking, and it avoids a minor but annoying API break for extensions. With this change, there is no reason for anybody to call AllocSetContextCreateExtended directly, so in HEAD I renamed it to AllocSetContextCreateInternal. It's probably too late for an ABI break like that in 11, though. Discussion: https://postgr.es/m/20181012170355.bhxi273skjt6sag4@alap3.anarazel.de
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/.