4863ed8f37
When deleteOneObject closes and reopens the pg_depend relation, we must see to it that the relcache pointer held by the calling function (typically performMultipleDeletions) is updated. Usually the relcache entry is retained so that the pointer value doesn't change, which is why the problem had escaped notice ... but after a cache flush event there's no guarantee that the same memory will be reassigned. To fix, change the recursive functions' APIs so that we pass around a "Relation *" not just "Relation". Per investigation of occasional buildfarm failures. This is trivial to reproduce with -DCLOBBER_CACHE_ALWAYS, which points up the sad lack of any buildfarm member running that way on a regular basis.
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: http://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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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 http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.