Commit f696c0cd5f caused a test failure in 002_pg_upgrade.pl, because an earlier s/// operator caused qr// to no longer match the empty string. Use qr/^$/ instead, which is a better test anyway, because we expect the stderr to be empty. Initially this appeared to be a perl bug, but per discussion, it seems that it was a misunderstanding of how perl works: an empty pattern uses the last successful pattern. Given how surprising that behavior is to perl non-experts, we will need to look for similar problems elsewhere and eliminate the use of empty patterns throughout the code. For now, address this one instance to fix the buildfarm. Discussion: https://postgr.es/m/0ef325fa06e7a1605c4e119c4ecb637c67e5fb4e.camel@j-davis.com Reviewed-by: Tom Lane
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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at:
https://www.postgresql.org/docs/devel/
In particular, information about building PostgreSQL from the source
code can be found at:
https://www.postgresql.org/docs/devel/installation.html
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.