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No index in template0 should have collation-dependent ordering, especially not indexes on shared catalogs. For most textual columns we avoid this issue by using type "name" (which sorts per strcmp()). However there are a few indexed columns that we'd prefer to use "text" for, and for that, the default opclass text_ops is unsafe. Fortunately, text_pattern_ops is safe (it sorts per memcmp()), and it has no real functional disadvantage for our purposes. So change the indexes on pg_seclabel.provider and pg_shseclabel.provider to use text_pattern_ops. In passing, also mark pg_replication_origin.roname as using text_pattern_ops --- for some reason it was labeled varchar_pattern_ops which is just wrong, even though it accidentally worked. Add regression test queries to catch future errors of these kinds. We still can't do anything about the misdeclared pg_seclabel and pg_shseclabel indexes in back branches :-(
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/.