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Tom Lane 9220b00e57 Tighten configure's test for __builtin_constant_p(). 
Commit 9fa6f00b1 assumed that __builtin_constant_p("string literal")
is TRUE, if the compiler has that function at all.  Buildfarm results
show that Sun Studio 12, at least, breaks that assumption.  Removing
that usage would leave us with no mechanical check for a very fragile
coding requirement, so instead teach configure to ignore
__builtin_constant_p() if it doesn't behave that way.  We could
complicate matters by distinguishing three cases (no such function,
vs does, vs doesn't work for string literals); but for now, that seems
unnecessary because our other existing uses of this function are just
fairly minor optimizations of non-returning elog/ereport.  We can live
without that on the small population of compilers that act this way.

Discussion: https://postgr.es/m/22997.1513264066@sss.pgh.pa.us
 		2017-12-14 17:19:27 -05:00
config Tighten configure's test for __builtin_constant_p(). 2017-12-14 17:19:27 -05:00
contrib Rethink MemoryContext creation to improve performance. 2017-12-13 13:55:16 -05:00
doc Add approximated Zipfian-distributed random generator to pgbench. 2017-12-14 14:30:22 +03:00
src Fix a number of copy & paste comment errors in common/int.h. 2017-12-14 12:33:48 -08:00
.dir-locals.el emacs: Set indent-tabs-mode in perl-mode 2015-04-12 23:53:23 -04:00
.gitattributes Remove contrib/tsearch2. 2017-02-13 11:06:11 -05:00
.gitignore Add lcov --initial 2017-09-29 08:54:34 -04:00
COPYRIGHT Update copyright for 2017 2017-01-03 12:37:53 -05:00
GNUmakefile.in Have "make coverage" recurse into contrib as well 2016-09-05 18:44:36 -03:00
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
aclocal.m4 Make configure check for IPC::Run when --enable-tap-tests is specified. 2017-06-15 15:56:12 -04:00
configure Tighten configure's test for __builtin_constant_p(). 2017-12-14 17:19:27 -05:00
configure.in Provide overflow safe integer math inline functions. 2017-12-12 16:55:37 -08:00

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/.