faf5cee7f0
plpgsql's exec_stmt_execsql was Assert'ing that a CachedPlanSource was is_valid immediately after exec_prepare_plan. The risk factor in this case is that after building the prepared statement, exec_prepare_plan calls exec_simple_check_plan, which might try to generate a generic plan --- and with CLOBBER_CACHE_ALWAYS or other unusual causes of invalidation, that could result in an invalidation. However, that path could only be taken for a SELECT query, for which we need not set mod_stmt. So in this case I think it's best to just remove the Assert; it's okay to look at a slightly-stale querytree for what we need here. Per buildfarm testing.
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/.