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fd59974f2d
We need to increment the refcount on the composite type's cached tuple descriptor while we do lookups of its column types. Otherwise a cache flush could occur and release the tuple descriptor before we're done with it. This fails reliably with -DCLOBBER_CACHE_ALWAYS, but the odds of a failure in a production build seem rather low (since the pfree'd descriptor typically wouldn't get scribbled on immediately). That may explain the lack of any previous reports. Buildfarm issue noted by Christian Ullrich. Back-patch to 9.1 where the bogus code was added.
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/.