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Some conditions resulted in "return" directly out of a PG_TRY block, which left the exception stack dangling, and to add insult to injury failed to restore the state of set_latch_on_sigusr1. This is a bug only in 9.5; in HEAD it was accidentally fixed by commit db0f6cad4, which removed the surrounding PG_TRY block. However, I (tgl) chose to apply the patch to HEAD as well, because the old coding was gratuitously different from WaitForBackgroundWorkerStartup(), and there would indeed have been no bug if it were done like that to start with. Dmitry Ivanov Discussion: <1637882.WfYN5gPf1A@abook>
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. 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/.