Files
bison/data
Theophile Ranquet be6fa942ac variants: avoid type punning issue
This is based on what is recommended by both Scott Meyers, in 'Effective
C++', and Andrei Alexandrescu and Herb Sutter in 'C++ Coding Standards'.

Use a static_cast on void* rather than directly use a reinterpret_cast,
which can have nefarious effects on objects.  However, even though following
this guideline is good practice in general, I am not quite sure how relevant
it is when applied to conversions from POD to objects.  Actually, it might
very well be the opposite: isn't this exactly what reinterpret_cast is for?
What we really want *is* to transmit the memory map as a series of bytes,
which, if I am correct, falls into the kind of "low level" hack for which
this cast is meant.

In any case, this silences the warning, which will be greatly appreciated by
anyone using variants with a compiler supporting -fstrict-aliasing.

* data/variant.hh (as): Here.
* tests/c++.at (Exception safety, C++ Variant-based Symbols, Variants):
Don't use NO_STRICT_ALIAS_CXXFLAGS (revert commit ddb9db15), as type punning
is no longer an issue.
* tests/atlocal.in, configure.ac (NO_STRICT_ALIAS_CXXFLAGS): Remove
definition.
* examples/local.mk (NO_STRICT_ALIAS_CXXFLAGS): Remove from AM_CXXFLAGS.
* doc/bison.texi: Don't mention type punning issues.
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-*- outline -*-

This directory contains data needed by Bison.

* Skeletons
Bison skeletons: the general shapes of the different parser kinds,
that are specialized for specific grammars by the bison program.

Currently, the supported skeletons are:

- yacc.c
  It used to be named bison.simple: it corresponds to C Yacc
  compatible LALR(1) parsers.

- lalr1.cc
  Produces a C++ parser class.

- lalr1.java
  Produces a Java parser class.

- glr.c
  A Generalized LR C parser based on Bison's LALR(1) tables.

- glr.cc
  A Generalized LR C++ parser.  Actually a C++ wrapper around glr.c.

These skeletons are the only ones supported by the Bison team.
Because the interface between skeletons and the bison program is not
finished, *we are not bound to it*.  In particular, Bison is not
mature enough for us to consider that ``foreign skeletons'' are
supported.

* m4sugar
This directory contains M4sugar, sort of an extended library for M4,
which is used by Bison to instantiate the skeletons.

* xslt
This directory contains XSLT programs that transform Bison's XML output
into various formats.

- bison.xsl
  A library of routines used by the other XSLT programs.

- xml2dot.xsl
  Conversion into GraphViz's dot format.

- xml2text.xsl
  Conversion into text.

- xml2xhtml.xsl
  Conversion into XHTML.

-----

Copyright (C) 2002, 2008-2013 Free Software Foundation, Inc.

This file is part of GNU Bison.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.