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Marc G. Fournier bbebcb125e Fixes: 
Async notifies received while a backend is in the middle of a begin/end
transaction block are lost by libpq when the final end command is issued.

The bug is in the routine PQexec of libpq. The routine throws away any
message from the backend when a message of type 'C' is received. This
type of message is sent when the result of a portal query command with
no tuples is returned. Unfortunately this is the case of the end command.
As all async notification are sent only when the transaction is finished,
if they are received in the middle of a transaction they are lost in the
libpq library. I added some tracing code to PQexec and this is the output:

Submitted by: Massimo Dal Zotto <dz@cs.unitn.it>
 		1996-09-16 05:50:46 +00:00
contrib Support Docs & Contrib 1996-08-18 22:14:33 +00:00
doc Support Docs & Contrib 1996-08-18 22:14:33 +00:00
src Fixes: 1996-09-16 05:50:46 +00:00
COPYRIGHT Support Docs & Contrib 1996-08-18 22:14:33 +00:00
HISTORY Support Docs & Contrib 1996-08-18 22:14:33 +00:00
INSTALL Support Docs & Contrib 1996-08-18 22:14:33 +00:00
MAKE_CTAGS Support Docs & Contrib 1996-08-18 22:14:33 +00:00
MIGRATION_to_1.02.1 Support Docs & Contrib 1996-08-18 22:14:33 +00:00
README Support Docs & Contrib 1996-08-18 22:14:33 +00:00

README 

POSTGRES95 Data Base Management System

This directory contains the 1.02 release of Postgres95. See INSTALL for
the installation notes and HISTORY for the changes.

We also have a WWW home page located at:
	http://www.ki.net/postgres95

Postgres95 is not public domain software.  It is copyrighted by the
University of California but may be used according to the licensing
terms of the the copyright below:

------------------------------------------------------------------------

POSTGRES95 Data Base Management System

Copyright (c) 1994-6 Regents of the University of California

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
paragraph and the following two paragraphs appear in all copies.

IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.