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Andres Freund 65a8a3f9f6 Change various Gin*Is* macros to return 0/1. 
Returning the direct result of bit arithmetic, in a macro intended to be
used in a boolean manner, can be problematic if the return value is
stored in a variable of type 'bool'. If bool is implemented using C99's
_Bool, that can lead to comparison failures if the variable is then
compared again with the expression (see ginStepRight() for an example
that fails), as _Bool forces the result to be 0/1. That happens in some
configurations of newer MSVC compilers.  It's also problematic when
storing the result of such an expression in a narrower type.

Several gin macros have been declared in that style since gin's initial
commit in 8a3631f8d8.

There's a lot more macros like this, but this is the only one causing
regression test failures; and I don't want to commit and backpatch a
larger patch with lots of conflicts just before the next set of minor
releases.

Discussion: 20150811154237.GD17575@awork2.anarazel.de
Backpatch: All supported branches
2016-03-27 17:47:50 +02:00
config Cope if platform declares mbstowcs_l(), but not locale_t, in <xlocale.h>. 2016-03-15 13:19:58 -04:00
contrib Fix "pg_bench -C -M prepared". 2016-03-16 23:18:07 -04:00
doc doc: document MANPATH as /usr/local/pgsql/share/man 2016-02-29 17:53:55 -03:00
src Change various Gin*Is* macros to return 0/1. 2016-03-27 17:47:50 +02:00
.gitignore
aclocal.m4
configure Cope if platform declares mbstowcs_l(), but not locale_t, in <xlocale.h>. 2016-03-15 13:19:58 -04:00
configure.in Cope if platform declares mbstowcs_l(), but not locale_t, in <xlocale.h>. 2016-03-15 13:19:58 -04:00
COPYRIGHT Update copyright for 2016 2016-01-02 13:33:39 -05:00
GNUmakefile.in Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:12 -05:00
HISTORY Improve text of stub HISTORY file. 2014-02-12 18:16:27 -05:00
Makefile
README Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:12 -05:00
README.git Don't generate plain-text HISTORY and src/test/regress/README anymore. 2014-02-10 20:48:12 -05:00

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:

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