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Tom Lane 4618fdd674 Second try at fixing numeric data passed through an ECPG SQLDA. 
In commit ecfd55795, I removed sqlda.c's checks for ndigits != 0 on the
grounds that we should duplicate the state of the numeric value's digit
buffer even when all the digits are zeroes.  However, that still isn't
quite right, because another possible state of the digit buffer is
buf == digits == NULL (this occurs for a NaN).  As the code now stands,
it'll invoke memcpy with a NULL source address and zero bytecount,
which we know a few platforms crash on.  Hence, reinstate the no-copy
short-circuit, but make it test specifically for buf != NULL rather than
some other condition.  In hindsight, the ndigits test (added by commit
f2ae9f9c3) was almost certainly meant to fix the NaN case not the
all-zeroes case as the associated thread alleged.

As before, back-patch to all supported versions.

Discussion: https://postgr.es/m/1803D792815FC24D871C00D17AE95905C71161@g01jpexmbkw24
2018-11-14 11:27:30 -05:00
config Fix detection of the result type of strerror_r(). 2018-09-30 16:24:56 -04:00
contrib Still further rethinking of build changes for macOS Mojave. 2018-10-18 14:55:23 -04:00
doc Fix incorrect author name in release notes 2018-11-12 23:00:47 +09:00
src Second try at fixing numeric data passed through an ECPG SQLDA. 2018-11-14 11:27:30 -05:00
.dir-locals.el Update documentation editor setup instructions 2018-07-13 21:28:18 +02:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Support for optimizing and emitting code in LLVM JIT provider. 2018-03-22 11:05:22 -07:00
aclocal.m4 Add configure infrastructure (--with-llvm) to enable LLVM support. 2018-03-20 17:26:25 -07:00
configure Stamp 11.1. 2018-11-05 16:43:09 -05:00
configure.in Stamp 11.1. 2018-11-05 16:43:09 -05:00
COPYRIGHT Update copyright for 2018 2018-01-02 23:30:12 -05:00
GNUmakefile.in Ensure we build generated headers at the start of some more cases. 2018-07-30 18:04:39 -04:00
HISTORY Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
Makefile Fix non-GNU makefiles for AIX make. 2017-11-30 00:57:22 -08:00
README Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -04:00
README.git Change documentation references to PG website to use https: not http: 2017-05-20 21:50:47 -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:

	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/.