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Tom Lane 6923d699bc Protect GIST logic that assumes penalty values can't be negative. 
Apparently sane-looking penalty code might return small negative values,
for example because of roundoff error.  This will confuse places like
gistchoose().  Prevent problems by clamping negative penalty values to
zero.  (Just to be really sure, I also made it force NaNs to zero.)
Back-patch to all supported branches.

Alexander Korotkov
2011-05-31 17:53:45 -04:00
config Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible. 2011-05-26 17:29:33 -04:00
contrib Recode non-ASCII characters in source to UTF-8 2011-05-31 23:11:46 +03:00
doc Protect GIST logic that assumes penalty values can't be negative. 2011-05-31 17:53:45 -04:00
src Protect GIST logic that assumes penalty values can't be negative. 2011-05-31 17:53:45 -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 Replace use of credential control messages with getsockopt(LOCAL_PEERCRED). 2011-05-31 16:10:46 -04:00
configure.in Replace use of credential control messages with getsockopt(LOCAL_PEERCRED). 2011-05-31 16:10:46 -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

README 

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/.