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In the original code, we were storing the pg_inherits row for a partitioned table too early: enough that we had a hack for relcache to avoid falling flat on its face while reading such a partial entry. If we finish the pg_class creation first and *then* store the pg_inherits entry, we don't need that hack. Also recognize that pg_class.relpartbound is not marked NOT NULL and therefore it's entirely possible to read null values, so having only Assert() protection isn't enough. Change those to if/elog tests instead. This qualifies as a robustness fix, so backpatch to pg11. In passing, remove one access that wasn't actually needed, and reword one message to be like all the others that check for the same thing. Reviewed-by: Amit Langote Discussion: https://postgr.es/m/20180903213916.hh6wasnrdg6xv2ud@alvherre.pgsql
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/.