669c7d20e6
We need to create the pg_multixact/offsets file deleted by pg_upgrade much earlier than we originally were: it was in TrimMultiXact(), which runs after we exit recovery, but it actually needs to run earlier than the first call to SetMultiXactIdLimit (before recovery), because that routine already wants to read the first offset segment. Per pg_upgrade trouble report from Jeff Janes. While at it, silence a compiler warning about a pointless assert that an unsigned variable was being tested non-negative. This was a signed constant in Thomas Munro's patch which I changed to unsigned before commit. Pointed out by Andres Freund.
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/.