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Commit f4fb45d15c misguidedly tried to free some state during aggregate finalization for json_objectagg. This resulted in attempts to access freed memory, especially when the function is used as a window function. Commit 4eb9798879 attempted to ameliorate that, but in fact it should just be ripped out, which is done here. Also add some regression tests for json_objectagg in various flavors as a window function. Original report from Jaime Casanova, diagnosis by Andres Freund. Discussion: https://postgr.es/m/YkfeMNYRCGhySKyg@ahch-to
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/.