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ExecInsertIndexTuples treated an exclusion constraint as subject to noDupErr processing even when it was not listed in arbiterIndexes, and would therefore not error out for a conflict in such a constraint, instead returning it as an arbiter-index failure. That led to an infinite loop in ExecInsert, since ExecCheckIndexConstraints ignored the index as-intended and therefore didn't throw the expected error. To fix, make the exclusion constraint code path use the same condition as the index_insert call does to decide whether no-error-for-duplicates behavior is appropriate. While at it, refactor a little bit to avoid unnecessary list_member_oid calls. (That surely wouldn't save anything worth noticing, but I find the code a bit clearer this way.) Per bug report from Heikki Rauhala. Back-patch to 9.5 where ON CONFLICT was introduced. Report: <4C976D6B-76B4-434C-8052-D009F7B7AEDA@reaktor.fi>
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/.