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Heikki Linnakangas 931bf3eb9b Fix a bug in pairing heap removal code.
After removal, the next_sibling pointer of a node was sometimes incorrectly
left to point to another node in the heap, which meant that a node was
sometimes linked twice into the heap. Surprisingly that didn't cause any
crashes in my testing, but it was clearly wrong and could easily segfault
in other scenarios.

Also always keep the prev_or_parent pointer as NULL on the root node. That
was not a correctness issue AFAICS, but let's be tidy.

Add a debugging function, to dump the contents of a pairing heap as a
string. It's #ifdef'd out, as it's not used for anything in any normal
code, but it was highly useful in debugging this. Let's keep it handy for
further reference.
2015-02-17 22:55:53 +02:00
config Speed up CRC calculation using slicing-by-8 algorithm. 2015-02-10 10:54:40 +02:00
contrib Eliminate unnecessary NULL checks in picksplit method of intarray. 2015-02-16 15:26:23 -06:00
doc Remove code to match IPv4 pg_hba.conf entries to IPv4-in-IPv6 addresses. 2015-02-17 12:49:18 -05:00
src Fix a bug in pairing heap removal code. 2015-02-17 22:55:53 +02:00
.dir-locals.el Update Emacs configuration 2013-08-13 20:08:44 -04:00
.gitattributes Add functions for dealing with PGP armor header lines to pgcrypto. 2014-10-01 16:03:39 +03:00
.gitignore Update .gitignore for config.cache. 2014-12-18 19:56:42 +09:00
COPYRIGHT Update copyright for 2015 2015-01-06 11:43:47 -05:00
GNUmakefile.in Add TAP tests for client programs 2014-04-14 21:33:46 -04:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:17 -05:00
Makefile Allow make check in PL directories 2011-02-15 06:52:12 +02:00
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:04 -05:00
aclocal.m4 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
configure Speed up CRC calculation using slicing-by-8 algorithm. 2015-02-10 10:54:40 +02:00
configure.in Speed up CRC calculation using slicing-by-8 algorithm. 2015-02-10 10:54:40 +02:00

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.  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/.