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Peter Geoghegan 5f55fc5a34 Demote pg_unreachable() in heapam to an assertion. 
Commit d168b66682, which overhauled index deletion, added a
pg_unreachable() to the end of a sort comparator used when sorting heap
TIDs from an index page.  This allows the compiler to apply
optimizations that assume that the heap TIDs from the index AM must
always be unique.

That doesn't seem like a good idea now, given recent reports of
corruption involving duplicate TIDs in indexes on Postgres 14.  Demote
to an assertion, just in case.

Backpatch: 14-, where index deletion was overhauled.
 		2021-10-29 10:53:48 -07:00
config Adjust configure to insist on Perl version >= 5.8.3. 2021-10-07 14:26:17 -04:00
contrib Improve contrib/amcheck's tests for CREATE INDEX CONCURRENTLY. 2021-10-28 11:45:14 -04:00
doc Test and document the behavior of initialization cross-refs in plpgsql. 2021-10-29 12:45:33 -04:00
src Demote pg_unreachable() in heapam to an assertion. 2021-10-29 10:53:48 -07:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add .editorconfig 2019-12-18 09:13:13 +01:00
.git-blame-ignore-revs Add historic commit to git-blame-ignore-revs file. 2021-08-31 12:57:52 -07:00
.gitattributes gitattributes: Add new entry to silence whitespace error 2021-06-05 07:57:31 +02:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
COPYRIGHT Update copyright for 2021 2021-01-02 13:06:25 -05:00
GNUmakefile.in add missing tag from commit b8c4261e5e 2021-07-01 15:47:46 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Don't unset MAKEFLAGS in non-GNU Makefile. 2019-06-25 09:36:21 +12:00
README Canonicalize some URLs 2020-02-10 20:47:50 +01:00
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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:

	https://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
https://www.postgresql.org/download/.  For more information look at our
web site located at https://www.postgresql.org/.