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pgfdw_report_error() in postgres_fdw gets a message from PGresult or PGconn to report an error received from a remote server. Previously if it could get a message from neither of them, it reported empty message unexpectedly. The cause of this issue was that pgfdw_report_error() didn't handle properly the case where no message could be obtained and its local variable message_primary was set to '\0'. This commit improves pgfdw_report_error() so that it reports the message "could not obtain ..." when it gets no message and message_primary is set to '\0'. This is the same behavior as when message_primary is NULL. dblink_res_error() in dblink has the same issue, so this commit also improves it in the same way. Back-patch to all supported branches. Author: Fujii Masao Reviewed-by: Bharath Rupireddy Discussion: https://postgr.es/m/477c16c8-7ea4-20fc-38d5-ed3a77ed616c@oss.nttdata.com
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/.