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e7e005ed90
PathNameOpenFile failed to ensure that the correct value of errno was returned to its caller after a failure (because it incorrectly supposed that free() can never change errno). In some cases this would result in a user-visible failure because an expected ENOENT errno was replaced with something else. Bogus EINVAL failures have been observed on OS X, for example. There were also a couple of places that could mangle an important value of errno if FDDEBUG was defined. While the usefulness of that debug support is highly debatable, we might as well make it safe to use, so add errno save/restore logic to the DO_DB macro. Per bug #8167 from Nelson Minar, diagnosed by RhodiumToad. Back-patch to all supported 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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.