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Alvaro Herrera 7de38741c0 Remove usage of &PL_sv_undef in hashes and arrays
According to perlguts, &PL_sv_undef is not the right thing to use in
those cases because it doesn't behave the same way as an undef value via
Perl code.  Seems the intuitive way to deal with undef values is subtly
enough broken that it's hard to notice when misused.

The broken uses got inadvertently introduced in commit
87bb2ade2c by Alexey Klyukin, Alex
Hunsaker and myself on 2011-02-17; no backpatch is necessary.

Per testing report from Greg Mullane.

Author: Alex Hunsaker
2011-05-30 12:42:48 -04:00
config Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible. 2011-05-26 17:29:33 -04:00
contrib Remove literal tabs from message strings 2011-05-28 01:01:42 +03:00
doc Add pg_basebackup -z option for compression with default level 2011-05-30 01:02:02 +03:00
src Remove usage of &PL_sv_undef in hashes and arrays 2011-05-30 12:42:48 -04:00
.gitignore Add gitignore entries for Windows MSVC builds 2011-04-19 20:04:41 +03:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible. 2011-05-26 17:29:33 -04:00
configure.in Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible. 2011-05-26 17:29:33 -04:00
COPYRIGHT Stamp copyrights for year 2011. 2011-01-01 13:18:15 -05:00
GNUmakefile.in Support "make check" in contrib 2011-04-25 22:27:11 +03:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
README.git Trivial typo fix. 2010-09-21 14:16:00 -04:00

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/.