Peter Eisentraut 4731d848f2 pg_controldata: Prevent division-by-zero errors
If the control file is corrupted and specifies the WAL segment size
to be 0 bytes, calculating the latest checkpoint's REDO WAL file
will fail with a division-by-zero error.  Show it as "???" instead.

Also reword the warning message a bit and send it to stdout, like the
other pre-existing warning messages.

Add some tests for dealing with a corrupted pg_control file.

Author: Nathan Bossart <bossartn@amazon.com>, tests by me
2018-03-21 12:21:23 -04:00
2017-02-13 11:06:11 -05:00
2017-09-29 08:54:34 -04:00
2018-01-02 23:30:12 -05:00
2017-11-30 00:57:22 -08:00

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:

	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/.
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Readme 671 MiB
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