version 2.7.1

* NEWS: Record release date.

.prev-version

@@ -1 +1 @@
-2.6.5
+2.7

AUTHORS

@@ -24,7 +24,7 @@ and nasty bugs.
 
 -----
 
-Copyright (C) 1998-2012 Free Software Foundation, Inc.
+Copyright (C) 1998-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

ChangeLog-2012

@@ -24286,7 +24286,7 @@
 
 	-----
 
-	Copyright (C) 1987-1988, 1991-2012 Free Software Foundation,
+	Copyright (C) 1987-1988, 1991-2013 Free Software Foundation,
 	Inc.
 
 	Copying and distribution of this file, with or without

Makefile.am

@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
 
-## Copyright (C) 2001-2012 Free Software Foundation, Inc.
+## Copyright (C) 2001-2013 Free Software Foundation, Inc.
 
 # 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
@@ -56,12 +56,11 @@ dist-hook: gen-ChangeLog
 
 .PHONY: update-b4-copyright update-package-copyright-year
 update-b4-copyright:
-	$(AM_V_GEN) find data -type f		\
-	  | grep -v -E '^data/bison.m4$$'	\
-	  | xargs $(build_aux)/$@
+	$(AM_V_GEN)find $(srcdir)/data -type f          \
+	  | xargs $(srcdir)/build-aux/$@
 	@echo 'warning: src/parse-gram.[hc] may need to be regenerated.'
 update-package-copyright-year:
-	$(AM_V_GEN)$(build_aux)/$@ configure.ac
+	$(AM_V_GEN)$(srcdir)/build-aux/$@ $(srcdir)/configure.ac
 
 gen_start_date = 2012-01-16
 .PHONY: gen-ChangeLog

NEWS

@@ -1,20 +1,49 @@
 GNU Bison NEWS
 
-* Noteworthy changes in release 2.6.90 (2012-12-07) [beta]
+* Noteworthy changes in release 2.7.1 (2013-04-15) [stable]
+
+** Bug fixes
+
+*** Fix compiler attribute portability (yacc.c)
+
+  With locations enabled, __attribute__ was used unprotected.
+
+*** Fix some compiler warnings (lalr1.cc)
+
+* Noteworthy changes in release 2.7 (2012-12-12) [stable]
 
 ** Bug fixes
 
   Warnings about uninitialized yylloc in yyparse have been fixed.
 
-** %language is no longer an experimental feature.
+  Restored C90 compliance (yet no report was ever made).
 
-  The introduction of this feature, in 2.4, was four years ago. The --language
-  option and the %language directive are no longer experimental.
+** Diagnostics are improved
 
-** New format for error reports: carets
+*** Changes in the format of error messages
 
-  Caret errors have been added to Bison, for example (taken from the
-  documentation):
+  This used to be the format of many error reports:
+
+    input.y:2.7-12: %type redeclaration for exp
+    input.y:1.7-12: previous declaration
+
+  It is now:
+
+    input.y:2.7-12: error: %type redeclaration for exp
+    input.y:1.7-12:     previous declaration
+
+*** New format for error reports: carets
+
+  Caret errors have been added to Bison:
+
+    input.y:2.7-12: error: %type redeclaration for exp
+     %type <sval> exp
+           ^^^^^^
+    input.y:1.7-12:     previous declaration
+     %type <ival> exp
+           ^^^^^^
+
+  or
 
     input.y:3.20-23: error: ambiguous reference: '$exp'
      exp: exp '+' exp { $exp = $1 + $3; };
@@ -29,42 +58,23 @@ GNU Bison NEWS
      exp: exp '+' exp { $exp = $1 + $3; };
                   ^^^
 
-  The default behaviour for now is still not to display these unless explictly
-  asked with -fall of -fcaret. However, in a later release, it will be made the
-  default behavior (but may still be deactivated with -fno-caret).
+  The default behaviour for now is still not to display these unless
+  explictly asked with -fcaret (or -fall). However, in a later release, it
+  will be made the default behavior (but may still be deactivated with
+  -fno-caret).
 
 ** New value for %define variable: api.pure full
 
   The %define variable api.pure requests a pure (reentrant) parser. However,
-  for historical reasons, using it in a location-tracking Yacc parser resulted
-  in a yyerror function that did not take a location as a parameter. With this
-  new value, the user may request a better pure parser, where yyerror does take
-  a location as a parameter (in location-tracking parsers).
+  for historical reasons, using it in a location-tracking Yacc parser
+  resulted in a yyerror function that did not take a location as a
+  parameter. With this new value, the user may request a better pure parser,
+  where yyerror does take a location as a parameter (in location-tracking
+  parsers).
 
   The use of "%define api.pure true" is deprecated in favor of this new
   "%define api.pure full".
 
-** Changes in the format of error messages
-
-  This used to be the format of many error reports:
-
-    foo.y:5.10-24: result type clash on merge function 'merge': <t3> != <t2>
-    foo.y:4.13-27: previous declaration
-
-  It is now:
-
-    foo.y:5.10-25: result type clash on merge function 'merge': <t3> != <t2>
-    foo.y:4.13-27:     previous declaration
-
-** Exception safety (lalr1.cc)
-
-  The parse function now catches exceptions, uses the %destructors to
-  release memory (the lookahead symbol and the symbols pushed on the stack)
-  before re-throwing the exception.
-
-  This feature is somewhat experimental.  User feedback would be
-  appreciated.
-
 ** New %define variable: api.location.type (glr.cc, lalr1.cc, lalr1.java)
 
   The %define variable api.location.type defines the name of the type to use
@@ -84,6 +94,15 @@ GNU Bison NEWS
   position_type are deprecated in favor of api.location.type and
   api.position.type.
 
+** Exception safety (lalr1.cc)
+
+  The parse function now catches exceptions, uses the %destructors to
+  release memory (the lookahead symbol and the symbols pushed on the stack)
+  before re-throwing the exception.
+
+  This feature is somewhat experimental.  User feedback would be
+  appreciated.
+
 ** Graph improvements in DOT and XSLT
 
   The graphical presentation of the states is more readable: their shape is
@@ -96,13 +115,21 @@ GNU Bison NEWS
   These changes are present in both --graph output and xml2dot.xsl XSLT
   processing, with minor (documented) differences.
 
-  Two nodes were added to the documentation: Xml and Graphviz.
+** %language is no longer an experimental feature.
+
+  The introduction of this feature, in 2.4, was four years ago. The
+  --language option and the %language directive are no longer experimental.
 
 ** Documentation
 
   The sections about shift/reduce and reduce/reduce conflicts resolution
   have been fixed and extended.
 
+  Although introduced more than four years ago, XML and Graphviz reports
+  were not properly documented.
+
+  The translation of mid-rule actions is now described.
+
 * Noteworthy changes in release 2.6.5 (2012-11-07) [stable]
 
   We consider compiler warnings about Bison generated parsers to be bugs.
@@ -488,6 +515,7 @@ GNU Bison NEWS
 
   These features are experimental in this version.  More user feedback
   will help to stabilize them.
+  Contributed by Alex Rozenman.
 
 ** IELR(1) and canonical LR(1):
 
@@ -1004,6 +1032,7 @@ GNU Bison NEWS
 
   The current Java interface is experimental and may evolve.  More user
   feedback will help to stabilize it.
+  Contributed by Paolo Bonzini.
 
 ** %language
 
@@ -1017,6 +1046,7 @@ GNU Bison NEWS
   Bison can now generate an XML report of the LALR(1) automaton using the new
   "--xml" option.  The current XML schema is experimental and may evolve.  More
   user feedback will help to stabilize it.
+  Contributed by Wojciech Polak.
 
 ** The grammar file may now specify the name of the parser header file using
   %defines.  For example:
@@ -1993,7 +2023,7 @@ Output file does not redefine const for C++.
 
 -----
 
-Copyright (C) 1995-2012 Free Software Foundation, Inc.
+Copyright (C) 1995-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 

PACKAGING

@@ -36,7 +36,7 @@ to the bison package.
 
 -----
 
-Copyright (C) 2002, 2005, 2009-2012 Free Software Foundation, Inc.
+Copyright (C) 2002, 2005, 2009-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

README

@@ -44,7 +44,7 @@ End:
 
 -----
 
-Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2012 Free Software
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2013 Free Software
 Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.

README-alpha

@@ -12,7 +12,7 @@ the problems you encounter.
 
 -----
 
-Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

README-hacking

@@ -408,7 +408,7 @@ Push these changes.
 
 -----
 
-Copyright (C) 2002-2005, 2007-2012 Free Software Foundation, Inc.
+Copyright (C) 2002-2005, 2007-2013 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

THANKS

@@ -103,6 +103,7 @@ Ralf Wildenhues           [email protected]
 Richard Stallman          [email protected]
 Rob Vermaas               [email protected]
 Robert Anisko             [email protected]
+Rob Conde                 [email protected]
 Satya Kiran Popuri        [email protected]
 Sebastian Setzer          [email protected]
 Sebastien Fricker         [email protected]
@@ -121,10 +122,12 @@ Tom Tromey                [email protected]
 Tommy Nordgren            [email protected]
 Troy A. Johnson           [email protected]
 Tys Lefering              [email protected]
+Victor Khomenko           [email protected]
 Vin Shelton               [email protected]
 W.C.A. Wijngaards         [email protected]
 Wayne Green               [email protected]
 Wei Song                  [email protected]
+Wojciech Polak            [email protected]
 Wolfgang S. Kechel        [email protected]
 Wolfram Wagner            [email protected]
 Wwp                       [email protected]
@@ -140,7 +143,7 @@ End:
 
 -----
 
-Copyright (C) 2000-2012 Free Software Foundation, Inc.
+Copyright (C) 2000-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 

TODO

@@ -351,7 +351,7 @@ End:
 
 -----
 
-Copyright (C) 2001-2004, 2006, 2008-2012 Free Software Foundation, Inc.
+Copyright (C) 2001-2004, 2006, 2008-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

bootstrap

@@ -1,10 +1,10 @@
 #! /bin/sh
 # Print a version string.
-scriptversion=2012-07-19.14; # UTC
+scriptversion=2013-03-08.16; # UTC
 
 # Bootstrap this package from checked-out sources.
 
-# Copyright (C) 2003-2012 Free Software Foundation, Inc.
+# Copyright (C) 2003-2013 Free Software Foundation, Inc.
 
 # 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
@@ -306,34 +306,34 @@ if test -n "$checkout_only_file" && test ! -r "$checkout_only_file"; then
   die "Bootstrapping from a non-checked-out distribution is risky."
 fi
 
-# Ensure that lines starting with ! sort last, per gitignore conventions
-# for whitelisting exceptions after a more generic blacklist pattern.
-sort_patterns() {
-  sort -u "$@" | sed '/^!/ {
-    H
-    d
-  }
-  $ {
-    P
-    x
-    s/^\n//
-  }' | sed '/^$/d'
+# Strip blank and comment lines to leave significant entries.
+gitignore_entries() {
+  sed '/^#/d; /^$/d' "$@"
 }
 
-# If $STR is not already on a line by itself in $FILE, insert it,
-# sorting the new contents of the file and replacing $FILE with the result.
-insert_sorted_if_absent() {
+# If $STR is not already on a line by itself in $FILE, insert it at the start.
+# Entries are inserted at the start of the ignore list to ensure existing
+# entries starting with ! are not overridden.  Such entries support
+# whitelisting exceptions after a more generic blacklist pattern.
+insert_if_absent() {
   file=$1
   str=$2
   test -f $file || touch $file
-  echo "$str" | sort_patterns - $file | cmp -s - $file > /dev/null \
-    || { echo "$str" | sort_patterns - $file > $file.bak \
-      && mv $file.bak $file; } \
-    || die "insert_sorted_if_absent $file $str: failed"
+  test -r $file || die "Error: failed to read ignore file: $file"
+  duplicate_entries=$(gitignore_entries $file | sort | uniq -d)
+  if [ "$duplicate_entries" ] ; then
+    die "Error: Duplicate entries in $file: " $duplicate_entries
+  fi
+  linesold=$(gitignore_entries $file | wc -l)
+  linesnew=$(echo "$str" | gitignore_entries - $file | sort -u | wc -l)
+  if [ $linesold != $linesnew ] ; then
+    { echo "$str" | cat - $file > $file.bak && mv $file.bak $file; } \
+      || die "insert_if_absent $file $str: failed"
+  fi
 }
 
 # Adjust $PATTERN for $VC_IGNORE_FILE and insert it with
-# insert_sorted_if_absent.
+# insert_if_absent.
 insert_vc_ignore() {
   vc_ignore_file="$1"
   pattern="$2"
@@ -344,7 +344,7 @@ insert_vc_ignore() {
     # .gitignore entry.
     pattern=$(echo "$pattern" | sed s,^,/,);;
   esac
-  insert_sorted_if_absent "$vc_ignore_file" "$pattern"
+  insert_if_absent "$vc_ignore_file" "$pattern"
 }
 
 # Die if there is no AC_CONFIG_AUX_DIR($build_aux) line in configure.ac.
@@ -630,9 +630,13 @@ esac
 if $bootstrap_sync; then
   cmp -s "$0" "$GNULIB_SRCDIR/build-aux/bootstrap" || {
     echo "$0: updating bootstrap and restarting..."
+    case $(sh -c 'echo "$1"' -- a) in
+      a) ignored=--;;
+      *) ignored=ignored;;
+    esac
     exec sh -c \
       'cp "$1" "$2" && shift && exec "${CONFIG_SHELL-/bin/sh}" "$@"' \
-      -- "$GNULIB_SRCDIR/build-aux/bootstrap" \
+      $ignored "$GNULIB_SRCDIR/build-aux/bootstrap" \
       "$0" "$@" --no-bootstrap-sync
   }
 fi
@@ -889,20 +893,21 @@ find "$m4_base" "$source_base" \
   -depth \( -name '*.m4' -o -name '*.[ch]' \) \
   -type l -xtype l -delete > /dev/null 2>&1
 
+# Invoke autoreconf with --force --install to ensure upgrades of tools
+# such as ylwrap.
+AUTORECONFFLAGS="--verbose --install --force -I $m4_base $ACLOCAL_FLAGS"
+
 # Some systems (RHEL 5) are using ancient autotools, for which the
 # --no-recursive option had not been invented.  Detect that lack and
 # omit the option when it's not supported.  FIXME in 2017: remove this
 # hack when RHEL 5 autotools are updated, or when they become irrelevant.
-no_recursive=
 case $($AUTORECONF --help) in
-  *--no-recursive*) no_recursive=--no-recursive;;
+  *--no-recursive*) AUTORECONFFLAGS="$AUTORECONFFLAGS --no-recursive";;
 esac
 
 # Tell autoreconf not to invoke autopoint or libtoolize; they were run above.
-echo "running: AUTOPOINT=true LIBTOOLIZE=true " \
-    "$AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS"
-AUTOPOINT=true LIBTOOLIZE=true \
-    $AUTORECONF --verbose --install $no_recursive -I $m4_base $ACLOCAL_FLAGS \
+echo "running: AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS"
+AUTOPOINT=true LIBTOOLIZE=true $AUTORECONF $AUTORECONFFLAGS \
   || die "autoreconf failed"
 
 # Get some extra files from gnulib, overriding existing files.

bootstrap.conf

@@ -1,6 +1,6 @@
 # Bootstrap configuration.
 
-# Copyright (C) 2006-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006-2013 Free Software Foundation, Inc.
 
 # 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

build-aux/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+## Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
 
 # 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

build-aux/darwin11.4.0.valgrind

@@ -1,4 +1,4 @@
-# Copyright (C) 2012 Free Software Foundation, Inc.
+# Copyright (C) 2012-2013 Free Software Foundation, Inc.
 
 # 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

build-aux/update-b4-copyright

@@ -3,7 +3,7 @@
 # Update b4_copyright invocations or b4_copyright_years definitions to
 # include the current year.
 
-# Copyright (C) 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
 # 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

build-aux/update-package-copyright-year

@@ -2,7 +2,7 @@
 
 # In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
 
-# Copyright (C) 2010-2012 Free Software Foundation, Inc.
+# Copyright (C) 2010-2013 Free Software Foundation, Inc.
 #
 # 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

cfg.mk

@@ -1,5 +1,5 @@
 # Customize maint.mk                           -*- makefile -*-
-# Copyright (C) 2008-2012 Free Software Foundation, Inc.
+# Copyright (C) 2008-2013 Free Software Foundation, Inc.
 
 # 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

configure.ac

@@ -1,6 +1,6 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001-2012 Free Software Foundation, Inc.
+# Copyright (C) 2001-2013 Free Software Foundation, Inc.
 #
 # 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
@@ -26,7 +26,7 @@ m4_pattern_forbid([^gl_[A-Z]])
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [[email protected]])
-AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2013])
 AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
                    [The copyright year for this package])
 
@@ -84,6 +84,13 @@ if test "$enable_gcc_warnings" = yes; then
     -Wformat -Wpointer-arith -Wwrite-strings'
   warn_c='-Wbad-function-cast -Wshadow -Wstrict-prototypes'
   warn_cxx='-Wnoexcept'
+  # Warnings for the test suite only.
+  #
+  # -fno-color-diagnostics: Clang's use of colors in the error
+  # messages is confusing the tests looking at the compiler's output
+  # (e.g., synclines.at).
+  warn_tests='-Wundef -pedantic -fno-color-diagnostics'
+
   AC_LANG_PUSH([C])
   # Clang supports many of GCC's -W options, but only issues warnings
   # on the ones it does not recognize.  In that case, gl_WARN_ADD
@@ -111,12 +118,13 @@ if test "$enable_gcc_warnings" = yes; then
     AS_VAR_APPEND([WARN_CFLAGS], [" $WARN_CFLAGS_TEST"])
 
   # Warnings for the test suite only.
-  gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
-  gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])
+  for i in $warn_tests;
+  do
+    gl_WARN_ADD([$i], [WARN_CFLAGS_TEST])
+  done
   CFLAGS=$save_CFLAGS
   AC_LANG_POP([C])
 
-
   AC_LANG_PUSH([C++])
   save_CXXFLAGS=$CXXFLAGS
   gl_WARN_ADD([-Werror=unknown-warning-option], [CXXFLAGS])
@@ -128,15 +136,22 @@ if test "$enable_gcc_warnings" = yes; then
               [AC_LANG_PROGRAM([], [nullptr])])
   gl_WARN_ADD([-Werror], [WERROR_CXXFLAGS])
   # Warnings for the test suite only.
-  gl_WARN_ADD([-Wundef], [WARN_CXXFLAGS_TEST])
-  gl_WARN_ADD([-pedantic], [WARN_CXXFLAGS_TEST])
+  for i in $warn_tests;
+  do
+    gl_WARN_ADD([$i], [WARN_CXXFLAGS_TEST])
+  done
+  # Clang++ 3.2+ reject C code generated by Flex.
+  gl_WARN_ADD([-Wno-null-conversion], [WARN_NO_NULL_CONVERSION_CXXFLAGS])
+  # Variants break strict aliasing analysis.
+  gl_WARN_ADD([-fno-strict-aliasing], [NO_STRICT_ALIAS_CXXFLAGS])
   CXXFLAGS=$save_CXXFLAGS
   AC_LANG_POP([C++])
 fi
 
 BISON_TEST_FOR_WORKING_C_COMPILER
-BISON_TEST_FOR_WORKING_CXX_COMPILER
 BISON_C_COMPILER_POSIXLY_CORRECT
+BISON_TEST_FOR_WORKING_CXX_COMPILER
+BISON_CXX_COMPILER_POSIXLY_CORRECT
 
 AC_ARG_ENABLE([yacc],
   [AC_HELP_STRING([--disable-yacc],

data/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2002, 2005-2012 Free Software Foundation, Inc.
+## Copyright (C) 2002, 2005-2013 Free Software Foundation, Inc.
 
 # 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

data/README

@@ -52,7 +52,7 @@ into various formats.
 
 -----
 
-Copyright (C) 2002, 2008-2012 Free Software Foundation, Inc.
+Copyright (C) 2002, 2008-2013 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

data/bison.m4

@@ -2,7 +2,7 @@
 
 # Language-independent M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2013 Free Software Foundation, Inc.
 
 # 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

data/c++-skel.m4

@@ -2,7 +2,7 @@
 
 # C++ skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2013 Free Software Foundation, Inc.
 
 # 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

data/c++.m4

@@ -2,7 +2,7 @@
 
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # 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

data/c-like.m4

@@ -2,7 +2,7 @@
 
 # Common code for C-like languages (C, C++, Java, etc.)
 
-# Copyright (C) 2012 Free Software Foundation, Inc.
+# Copyright (C) 2012-2013 Free Software Foundation, Inc.
 
 # 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

data/c-skel.m4

@@ -2,7 +2,7 @@
 
 # C skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006-2007, 2009-2013 Free Software Foundation, Inc.
 
 # 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

data/c.m4

@@ -2,7 +2,7 @@
 
 # C M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004-2013 Free Software Foundation, Inc.
 
 # 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
@@ -187,9 +187,29 @@ m4_define([b4_table_value_equals],
        [(!!(($2) == ($3)))])])
 
 
-## ---------##
-## Values.  ##
-## ---------##
+## ----------------- ##
+## Compiler issues.  ##
+## ----------------- ##
+
+# b4_attribute_define
+# -------------------
+# Provide portability for __attribute__.
+m4_define([b4_attribute_define],
+[#ifndef __attribute__
+/* This feature is available in gcc versions 2.5 and later.  */
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
+#  define __attribute__(Spec) /* empty */
+# endif
+#endif
+
+/* Suppress unused-variable warnings by "using" E.  */
+#if ! defined lint || defined __GNUC__
+# define YYUSE(E) ((void) (E))
+#else
+# define YYUSE(E) /* empty */
+#endif
+])
 
 
 # b4_null_define
@@ -405,7 +425,7 @@ m4_define([b4_c_arg],
 ## ----------- ##
 
 # b4_sync_start(LINE, FILE)
-# -----------------------
+# -------------------------
 m4_define([b4_sync_start], [[#]line $1 $2])
 
 
@@ -420,15 +440,15 @@ m4_define([b4_case],
 $2
     break;])
 
-# b4_symbol_actions(FILENAME, LINENO,
-#                   SYMBOL-TAG, SYMBOL-NUM,
-#                   SYMBOL-ACTION, SYMBOL-TYPENAME)
-# -------------------------------------------------
+# _b4_symbol_actions(FILENAME, LINENO,
+#                    SYMBOL-TAG, SYMBOL-NUM,
+#                    SYMBOL-ACTION, SYMBOL-TYPENAME)
+# --------------------------------------------------
 # Issue the code for a symbol action (e.g., %printer).
 #
 # Define b4_dollar_dollar([TYPE-NAME]), and b4_at_dollar, which are
 # invoked where $<TYPE-NAME>$ and @$ were specified by the user.
-m4_define([b4_symbol_actions],
+m4_define([_b4_symbol_actions],
 [b4_dollar_pushdef([(*yyvaluep)], [$6], [(*yylocationp)])dnl
       case $4: /* $3 */
 b4_syncline([$2], [$1])
@@ -438,6 +458,20 @@ b4_syncline([@oline@], [@ofile@])
 b4_dollar_popdef[]dnl
 ])
 
+# b4_symbol_actions(KIND)
+# -----------------------
+# Emit the symbol actions for KIND ("printers" or "destructors").
+# Dispatch on "yytype".
+m4_define([b4_symbol_actions],
+[m4_ifval(m4_defn([b4_symbol_$1]),
+[[switch (yytype)
+    {
+]m4_map([_b4_symbol_actions], m4_defn([b4_symbol_$1]))[
+      default:
+        break;
+    }]],
+[YYUSE (yytype);])])
+
 
 # b4_yydestruct_generate(FUNCTION-DECLARATOR)
 # -------------------------------------------
@@ -467,12 +501,7 @@ b4_parse_param_use[]dnl
     yymsg = "Deleting";
   YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
 
-  switch (yytype)
-    {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
-      default:
-        break;
-    }
+  ]b4_symbol_actions([destructors])[
 }]dnl
 ])
 
@@ -510,12 +539,7 @@ b4_parse_param_use[]dnl
 # else
   YYUSE (yyoutput);
 # endif
-  switch (yytype)
-    {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[      default:
-        break;
-    }
+  ]b4_symbol_actions([printers])[
 }
 
 

data/glr.c

@@ -2,7 +2,7 @@
 
 # GLR skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # 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
@@ -181,7 +181,7 @@ m4_define([b4_shared_declarations],
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-             [2002-2012])[
+             [2002-2013])[
 
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
@@ -246,13 +246,6 @@ b4_percent_code_get[]dnl
 # endif
 #endif
 
-/* Suppress unused-variable warnings by "using" E.  */
-#if ! defined lint || defined __GNUC__
-# define YYUSE(E) ((void) (E))
-#else
-# define YYUSE(E) /* empty */
-#endif
-
 /* Identity function, used to suppress warnings about constant conditions.  */
 #ifndef lint
 # define YYID(N) (N)
@@ -287,21 +280,11 @@ b4_percent_code_get[]dnl
 # include <setjmp.h>
 # define YYJMP_BUF jmp_buf
 # define YYSETJMP(Env) setjmp (Env)
-// Pacify clang.
+/* Pacify clang.  */
 # define YYLONGJMP(Env, Val) (longjmp (Env, Val), YYASSERT (0))
 #endif
 
-/*-----------------.
-| GCC extensions.  |
-`-----------------*/
-
-#ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later.  */
-# if (! defined __GNUC__ || __GNUC__ < 2 \
-      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5))
-#  define __attribute__(Spec) /* empty */
-# endif
-#endif
+]b4_attribute_define[
 
 #ifndef YYASSERT
 # define YYASSERT(Condition) ((void) ((Condition) || (abort (), 0)))
@@ -2013,10 +1996,10 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 #if ! YYERROR_VERBOSE
   yyerror (]b4_lyyerror_args[YY_("syntax error"));
 #else
+  {
   yySymbol yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
   size_t yysize0 = yytnamerr (YY_NULL, yytokenName (yytoken));
   size_t yysize = yysize0;
-  size_t yysize1;
   yybool yysize_overflow = yyfalse;
   char* yymsg = YY_NULL;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
@@ -2076,9 +2059,11 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
                     break;
                   }
                 yyarg[yycount++] = yytokenName (yyx);
-                yysize1 = yysize + yytnamerr (YY_NULL, yytokenName (yyx));
-                yysize_overflow |= yysize1 < yysize;
-                yysize = yysize1;
+                {
+                  size_t yysz = yysize + yytnamerr (YY_NULL, yytokenName (yyx));
+                  yysize_overflow |= yysz < yysize;
+                  yysize = yysz;
+                }
               }
         }
     }
@@ -2098,9 +2083,11 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 #undef YYCASE_
     }
 
-  yysize1 = yysize + strlen (yyformat);
-  yysize_overflow |= yysize1 < yysize;
-  yysize = yysize1;
+  {
+    size_t yysz = yysize + strlen (yyformat);
+    yysize_overflow |= yysz < yysize;
+    yysize = yysz;
+  }
 
   if (!yysize_overflow)
     yymsg = (char *) YYMALLOC (yysize);
@@ -2130,6 +2117,7 @@ yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
       yyerror (]b4_lyyerror_args[YY_("syntax error"));
       yyMemoryExhausted (yystackp);
     }
+  }
 #endif /* YYERROR_VERBOSE */
   yynerrs += 1;
 }
@@ -2575,7 +2563,7 @@ m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
 [b4_output_begin([b4_spec_defines_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-             [2002-2012])[
+             [2002-2013])[
 
 ]b4_cpp_guard_open([b4_spec_defines_file])[
 ]b4_shared_declarations[

data/glr.cc

@@ -2,7 +2,7 @@
 
 # C++ GLR skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # 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
@@ -167,12 +167,7 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
     std::ostream& yyoutput = debug_stream ();
     std::ostream& yyo = yyoutput;
     YYUSE (yyo);
-    switch (yytype)
-      {
-  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[        default:
-          break;
-      }
+    ]b4_symbol_actions([printers])[
   }
 
 
@@ -216,7 +211,8 @@ m4_pushdef([b4_parse_param], m4_defn([b4_parse_param_orig]))dnl
 
 #endif
 ]m4_popdef([b4_parse_param])dnl
-b4_namespace_close])
+b4_namespace_close
+])
 
 
 # Let glr.c believe that the user arguments include the parser itself.
@@ -232,7 +228,7 @@ m4_popdef([b4_parse_param])
 
 b4_output_begin([b4_spec_defines_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
-             [2002-2006, 2009-2012])[
+             [2002-2006, 2009-2013])[
 
 /* C++ GLR parser skeleton written by Akim Demaille.  */
 

data/java-skel.m4

@@ -2,7 +2,7 @@
 
 # Java skeleton dispatching for Bison.
 
-# Copyright (C) 2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2009-2013 Free Software Foundation, Inc.
 
 # 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

data/java.m4

@@ -2,7 +2,7 @@
 
 # Java language support for Bison
 
-# Copyright (C) 2007-2012 Free Software Foundation, Inc.
+# Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
 # 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

data/lalr1.cc

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # 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
@@ -33,7 +33,7 @@ m4_include(b4_pkgdatadir/[stack.hh])
 b4_defines_if(
 [b4_output_begin([b4_spec_defines_file])
 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
-             [2002-2012])
+             [2002-2013])
 [
 /**
  ** \file ]b4_spec_defines_file[
@@ -107,6 +107,10 @@ b4_user_stype
 #endif
 
   private:
+    /// This class is not copyable.
+    ]b4_parser_class_name[ (const ]b4_parser_class_name[&);
+    ]b4_parser_class_name[& operator= (const ]b4_parser_class_name[&);
+
     /// Report a syntax error.
     /// \param loc    where the syntax error is found.
     /// \param msg    a description of the syntax error.
@@ -268,7 +272,7 @@ b4_output_end()
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
-             [2002-2012])
+             [2002-2013])
 b4_percent_code_get([[top]])[]dnl
 m4_if(b4_prefix, [yy], [],
 [
@@ -418,12 +422,7 @@ do {					\
     std::ostream& yyo = debug_stream ();
     std::ostream& yyoutput = yyo;
     YYUSE (yyoutput);
-    switch (yytype)
-      {
-  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-[       default:
-	  break;
-      }
+    ]b4_symbol_actions([printers])[
   }
 
 
@@ -450,12 +449,7 @@ do {					\
     if (yymsg)
       YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
 
-    switch (yytype)
-      {
-  ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
-	default:
-	  break;
-      }
+    ]b4_symbol_actions([destructors])[
   }
 
   void
@@ -552,9 +546,9 @@ b4_dollar_popdef])[]dnl
        yynewstate, since the latter expects the semantical and the
        location values to have been already stored, initialize these
        stacks with a primary value.  */
-    yystate_stack_ = state_stack_type (0);
-    yysemantic_stack_ = semantic_stack_type (0);
-    yylocation_stack_ = location_stack_type (0);
+    yystate_stack_.clear ();
+    yysemantic_stack_.clear ();
+    yylocation_stack_.clear ();
     yysemantic_stack_.push (yylval);
     yylocation_stack_.push (yylloc);
 

data/lalr1.java

@@ -1,6 +1,6 @@
 # Java skeleton for Bison -*- autoconf -*-
 
-# Copyright (C) 2007-2012 Free Software Foundation, Inc.
+# Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
 # 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
@@ -24,7 +24,7 @@ m4_ifval(m4_defn([b4_symbol_destructors]),
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
-             [2007-2012])
+             [2007-2013])
 
 b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);
 ])[/* First part of user declarations.  */

data/location.cc

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2007, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2007, 2009-2013 Free Software Foundation, Inc.
 
 # 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
@@ -18,7 +18,7 @@
 
 b4_output_begin([b4_dir_prefix[]position.hh])
 b4_copyright([Positions for Bison parsers in C++],
-             [2002-2007, 2009-2012])[
+             [2002-2007, 2009-2013])[
 
 /**
  ** \file ]b4_dir_prefix[position.hh
@@ -152,7 +152,7 @@ b4_output_end()
 
 b4_output_begin([b4_dir_prefix[]location.hh])
 b4_copyright([Locations for Bison parsers in C++],
-             [2002-2007, 2009-2012])[
+             [2002-2007, 2009-2013])[
 
 /**
  ** \file ]b4_dir_prefix[location.hh

data/stack.hh

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2013 Free Software Foundation, Inc.
 
 # 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
@@ -16,11 +16,11 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 m4_pushdef([b4_copyright_years],
-           [2002-2012])
+           [2002-2013])
 
 b4_output_begin([b4_dir_prefix[]stack.hh])
 b4_copyright([Stack handling for Bison parsers in C++],
-             [2002-2012])[
+             [2002-2013])[
 
 /**
  ** \file ]b4_dir_prefix[stack.hh
@@ -77,6 +77,12 @@ b4_copyright([Stack handling for Bison parsers in C++],
         seq_.pop_front ();
     }
 
+    void
+    clear ()
+    {
+      seq_.clear ();
+    }
+
     inline
     unsigned int
     height () const
@@ -88,6 +94,8 @@ b4_copyright([Stack handling for Bison parsers in C++],
     inline const_iterator end () const { return seq_.rend (); }
 
   private:
+    stack (const stack&);
+    stack& operator= (const stack&);
     S seq_;
   };
 

data/xslt/bison.xsl

@@ -3,7 +3,7 @@
 <!--
     bison.xsl - common templates for Bison XSLT.
 
-    Copyright (C) 2007-2012 Free Software Foundation, Inc.
+    Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

data/xslt/xml2dot.xsl

@@ -3,7 +3,7 @@
 <!--
     xml2dot.xsl - transform Bison XML Report into DOT.
 
-    Copyright (C) 2007-2012 Free Software Foundation, Inc.
+    Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

data/xslt/xml2text.xsl

@@ -3,7 +3,7 @@
 <!--
     xml2text.xsl - transform Bison XML Report into plain text.
 
-    Copyright (C) 2007-2012 Free Software Foundation, Inc.
+    Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

data/xslt/xml2xhtml.xsl

@@ -3,7 +3,7 @@
 <!--
     xml2html.xsl - transform Bison XML Report into XHTML.
 
-    Copyright (C) 2007-2012 Free Software Foundation, Inc.
+    Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

data/yacc.c

@@ -2,7 +2,7 @@
 
 # Yacc compatible skeleton for Bison
 
-# Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation,
+# Copyright (C) 1984, 1989-1990, 2000-2013 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -333,7 +333,7 @@ m4_define([b4_shared_declarations],
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Bison implementation for Yacc-like parsers in C],
-             [1984, 1989-1990, 2000-2012])[
+             [1984, 1989-1990, 2000-2013])[
 
 /* C LALR(1) parser skeleton written by Richard Stallman, by
    simplifying the original so-called "semantic" parser.  */
@@ -447,12 +447,7 @@ typedef short int yytype_int16;
 # endif
 #endif
 
-/* Suppress unused-variable warnings by "using" E.  */
-#if ! defined lint || defined __GNUC__
-# define YYUSE(E) ((void) (E))
-#else
-# define YYUSE(E) /* empty */
-#endif
+]b4_attribute_define[
 
 /* Identity function, used to suppress warnings about constant conditions.  */
 #ifndef lint
@@ -1247,7 +1242,6 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
 {
   YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
   YYSIZE_T yysize = yysize0;
-  YYSIZE_T yysize1;
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */
   const char *yyformat = YY_NULL;
@@ -1328,11 +1322,13 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];
-                yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
-                if (! (yysize <= yysize1
-                       && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-                  return 2;
-                yysize = yysize1;
+                {
+                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
+                  if (! (yysize <= yysize1
+                         && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+                    return 2;
+                  yysize = yysize1;
+                }
               }
         }]b4_lac_if([[
 # if ]b4_api_PREFIX[DEBUG
@@ -1356,10 +1352,12 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
 # undef YYCASE_
     }
 
-  yysize1 = yysize + yystrlen (yyformat);
-  if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-    return 2;
-  yysize = yysize1;
+  {
+    YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
+    if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+      return 2;
+    yysize = yysize1;
+  }
 
   if (*yymsg_alloc < yysize)
     {
@@ -2055,7 +2053,7 @@ b4_output_end()
 b4_defines_if(
 [b4_output_begin([b4_spec_defines_file])[
 ]b4_copyright([Bison interface for Yacc-like parsers in C],
-              [1984, 1989-1990, 2000-2012])[
+              [1984, 1989-1990, 2000-2013])[
 
 ]b4_shared_declarations[
 ]b4_output_end()

djgpp/Makefile.maint

@@ -1,7 +1,7 @@
 # DJGPP Maintainer's Makefile                                    -*-Makefile-*-
 # Requires GNU sed
 
-## Copyright (C) 2005-2012 Free Software Foundation, Inc.
+## Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 # 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

djgpp/README.in

@@ -1,6 +1,6 @@
 This is a port of GNU Bison @VERSION@ to MSDOS/DJGPP.
 
-Copyright (C) 2005-2012 Free Software Foundation, Inc.
+Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 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

djgpp/config.bat

@@ -4,7 +4,7 @@ Rem Configure Bison for DJGPP.
 Rem WARNING WARNING WARNING: This file needs to have DOS CRLF end-of-line
 Rem format, or else stock DOS/Windows shells will refuse to run it.
 
-Rem Copyright (C) 2005-2012 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 Rem This program is free software: you can redistribute it and/or modify
 Rem it under the terms of the GNU General Public License as published by

djgpp/config.sed

@@ -2,7 +2,7 @@
 # Sed script for additional DJGPP specific editing
 # of the configure script generated by autoconf 2.62.
 
-# Copyright (C) 2005-2012 Free Software Foundation, Inc.
+# Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 # 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

djgpp/config.site

@@ -3,7 +3,7 @@
 # This is the config.site file for configuring GNU packages
 # which are to be built with DJGPP tools.
 
-# Copyright (C) 2005-2012 Free Software Foundation, Inc.
+# Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 # 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

djgpp/config_h.sed

@@ -1,6 +1,6 @@
 # sed script for DJGPP specific editing of config.hin
 
-# Copyright (C) 2005-2012 Free Software Foundation, Inc.
+# Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
 # 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

djgpp/djunpack.bat

@@ -7,7 +7,7 @@ Rem This batch file unpacks the Bison distribution while simultaneously
 Rem renaming some of the files whose names are invalid on DOS or conflict
 Rem with other file names after truncation to DOS 8+3 namespace.
 Rem
-Rem Copyright (C) 2005-2012 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2013 Free Software Foundation, Inc.
 Rem
 Rem This program is free software: you can redistribute it and/or modify
 Rem it under the terms of the GNU General Public License as published by

djgpp/subpipe.c

@@ -1,6 +1,6 @@
 /* Subprocesses with pipes.
 
-   Copyright (C) 2005-2012 Free Software Foundation, Inc.
+   Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
    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

djgpp/subpipe.h

@@ -1,6 +1,6 @@
 /* Subprocesses with pipes.
 
-   Copyright (C) 2005-2012 Free Software Foundation, Inc.
+   Copyright (C) 2005-2013 Free Software Foundation, Inc.
 
    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

djgpp/testsuite.sed

@@ -2,7 +2,7 @@
 # Sed script for additional DJGPP specific editing
 # of the testsuite script generated by autoconf 2.61.
 
-# Copyright (C) 2007-2012 Free Software Foundation, Inc.
+# Copyright (C) 2007-2013 Free Software Foundation, Inc.
 
 # 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

doc/Makefile.am

@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
 
-## Copyright (C) 2001-2003, 2005-2012 Free Software Foundation, Inc.
+## Copyright (C) 2001-2003, 2005-2013 Free Software Foundation, Inc.
 
 # 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
@@ -96,13 +96,14 @@ PREPATH = $(top_builddir)/src
 
 nodist_man_MANS = yacc.1
 
-## ----------------------------- ##
-## Graphviz examples generation. ##
-## ----------------------------- ##
+## ------------------------------ ##
+## Graphviz examples generation.  ##
+## ------------------------------ ##
 
 CLEANDIRS += figs
-FIGS_DOT = figs/example-reduce.dot figs/example-shift.dot
+FIGS_DOT = figs/example.dot figs/example-reduce.dot figs/example-shift.dot
 EXTRA_DIST +=								\
+  figs/example.y							\
   $(FIGS_DOT)								\
   $(FIGS_DOT:.dot=.eps) $(FIGS_DOT:.dot=.pdf) $(FIGS_DOT:.dot=.png)
 SUFFIXES += .dot .eps .pdf .png

doc/bison.texi

@@ -33,7 +33,7 @@
 This manual (@value{UPDATED}) is for GNU Bison (version
 @value{VERSION}), the GNU parser generator.
 
-Copyright @copyright{} 1988-1993, 1995, 1998-2012 Free Software
+Copyright @copyright{} 1988-1993, 1995, 1998-2013 Free Software
 Foundation, Inc.
 
 @quotation
@@ -208,6 +208,12 @@ Defining Language Semantics
                       This says when, why and how to use the exceptional
                         action in the middle of a rule.
 
+Actions in Mid-Rule
+
+* Using Mid-Rule Actions::       Putting an action in the middle of a rule.
+* Mid-Rule Action Translation::  How mid-rule actions are actually processed.
+* Mid-Rule Conflicts::           Mid-rule actions can cause conflicts.
+
 Tracking Locations
 
 * Location Type::               Specifying a data type for locations.
@@ -2722,6 +2728,9 @@ The Bison grammar file conventionally has a name ending in @samp{.y}.
 
 @node Grammar Outline
 @section Outline of a Bison Grammar
+@cindex comment
+@findex // @dots{}
+@findex /* @dots{} */
 
 A Bison grammar file has four main sections, shown here with the
 appropriate delimiters:
@@ -2741,8 +2750,8 @@ appropriate delimiters:
 @end example
 
 Comments enclosed in @samp{/* @dots{} */} may appear in any of the sections.
-As a GNU extension, @samp{//} introduces a comment that
-continues until end of line.
+As a GNU extension, @samp{//} introduces a comment that continues until end
+of line.
 
 @menu
 * Prologue::              Syntax and usage of the prologue.
@@ -3736,6 +3745,15 @@ Occasionally it is useful to put an action in the middle of a rule.
 These actions are written just like usual end-of-rule actions, but they
 are executed before the parser even recognizes the following components.
 
+@menu
+* Using Mid-Rule Actions::       Putting an action in the middle of a rule.
+* Mid-Rule Action Translation::  How mid-rule actions are actually processed.
+* Mid-Rule Conflicts::           Mid-rule actions can cause conflicts.
+@end menu
+
+@node Using Mid-Rule Actions
+@subsubsection Using Mid-Rule Actions
+
 A mid-rule action may refer to the components preceding it using
 @code{$@var{n}}, but it may not refer to subsequent components because
 it is run before they are parsed.
@@ -3768,10 +3786,16 @@ remove it afterward.  Here is how it is done:
 @example
 @group
 stmt:
-  LET '(' var ')'
-    @{ $<context>$ = push_context (); declare_variable ($3); @}
+  "let" '(' var ')'
+    @{
+      $<context>$ = push_context ();
+      declare_variable ($3);
+    @}
   stmt
-    @{ $$ = $6; pop_context ($<context>5); @}
+    @{
+      $$ = $6;
+      pop_context ($<context>5);
+    @}
 @end group
 @end example
 
@@ -3782,8 +3806,27 @@ list of accessible variables) as its semantic value, using alternative
 @code{context} in the data-type union.  Then it calls
 @code{declare_variable} to add the new variable to that list.  Once the
 first action is finished, the embedded statement @code{stmt} can be
-parsed.  Note that the mid-rule action is component number 5, so the
-@samp{stmt} is component number 6.
+parsed.
+
+Note that the mid-rule action is component number 5, so the @samp{stmt} is
+component number 6.  Named references can be used to improve the readability
+and maintainability (@pxref{Named References}):
+
+@example
+@group
+stmt:
+  "let" '(' var ')'
+    @{
+      $<context>let = push_context ();
+      declare_variable ($3);
+    @}[let]
+  stmt
+    @{
+      $$ = $6;
+      pop_context ($<context>let);
+    @}
+@end group
+@end example
 
 After the embedded statement is parsed, its semantic value becomes the
 value of the entire @code{let}-statement.  Then the semantic value from the
@@ -3817,13 +3860,13 @@ stmt:
   let stmt
     @{
       $$ = $2;
-      pop_context ($1);
+      pop_context ($let);
     @};
 
 let:
-  LET '(' var ')'
+  "let" '(' var ')'
     @{
-      $$ = push_context ();
+      $let = push_context ();
       declare_variable ($3);
     @};
 
@@ -3835,6 +3878,76 @@ Note that the action is now at the end of its rule.
 Any mid-rule action can be converted to an end-of-rule action in this way, and
 this is what Bison actually does to implement mid-rule actions.
 
+@node Mid-Rule Action Translation
+@subsubsection Mid-Rule Action Translation
+@vindex $@@@var{n}
+@vindex @@@var{n}
+
+As hinted earlier, mid-rule actions are actually transformed into regular
+rules and actions.  The various reports generated by Bison (textual,
+graphical, etc., see @ref{Understanding, , Understanding Your Parser})
+reveal this translation, best explained by means of an example.  The
+following rule:
+
+@example
+exp: @{ a(); @} "b" @{ c(); @} @{ d(); @} "e" @{ f(); @};
+@end example
+
+@noindent
+is translated into:
+
+@example
+$@@1: /* empty */ @{ a(); @};
+$@@2: /* empty */ @{ c(); @};
+$@@3: /* empty */ @{ d(); @};
+exp: $@@1 "b" $@@2 $@@3 "e" @{ f(); @};
+@end example
+
+@noindent
+with new nonterminal symbols @code{$@@@var{n}}, where @var{n} is a number.
+
+A mid-rule action is expected to generate a value if it uses @code{$$}, or
+the (final) action uses @code{$@var{n}} where @var{n} denote the mid-rule
+action.  In that case its nonterminal is rather named @code{@@@var{n}}:
+
+@example
+exp: @{ a(); @} "b" @{ $$ = c(); @} @{ d(); @} "e" @{ f = $1; @};
+@end example
+
+@noindent
+is translated into
+
+@example
+@@1: /* empty */ @{ a(); @};
+@@2: /* empty */ @{ $$ = c(); @};
+$@@3: /* empty */ @{ d(); @};
+exp: @@1 "b" @@2 $@@3 "e" @{ f = $1; @}
+@end example
+
+There are probably two errors in the above example: the first mid-rule
+action does not generate a value (it does not use @code{$$} although the
+final action uses it), and the value of the second one is not used (the
+final action does not use @code{$3}).  Bison reports these errors when the
+@code{midrule-value} warnings are enabled (@pxref{Invocation, ,Invoking
+Bison}):
+
+@example
+$ bison -fcaret -Wmidrule-value mid.y
+@group
+mid.y:2.6-13: warning: unset value: $$
+ exp: @{ a(); @} "b" @{ $$ = c(); @} @{ d(); @} "e" @{ f = $1; @};
+      ^^^^^^^^
+@end group
+@group
+mid.y:2.19-31: warning: unused value: $3
+ exp: @{ a(); @} "b" @{ $$ = c(); @} @{ d(); @} "e" @{ f = $1; @};
+                   ^^^^^^^^^^^^^
+@end group
+@end example
+
+
+@node Mid-Rule Conflicts
+@subsubsection Conflicts due to Mid-Rule Actions
 Taking action before a rule is completely recognized often leads to
 conflicts since the parser must commit to a parse in order to execute the
 action.  For example, the following two rules, without mid-rule actions,
@@ -3932,6 +4045,7 @@ compound:
 Now Bison can execute the action in the rule for @code{subroutine} without
 deciding which rule for @code{compound} it will eventually use.
 
+
 @node Tracking Locations
 @section Tracking Locations
 @cindex location
@@ -5389,8 +5503,8 @@ I.e., if @samp{%locations %define api.pure} is passed then the prototypes for
 @code{yyerror} are:
 
 @example
-void yyerror (char const *msg);                 /* Yacc parsers.  */
-void yyerror (YYLTYPE *locp, char const *msg);  /* GLR parsers.  */
+void yyerror (char const *msg);                 // Yacc parsers.
+void yyerror (YYLTYPE *locp, char const *msg);  // GLR parsers.
 @end example
 
 But if @samp{%locations %define api.pure %parse-param @{int *nastiness@}} is
@@ -6386,7 +6500,6 @@ Actions}).
 @end deffn
 
 @deffn {Value} @@$
-@findex @@$
 Acts like a structure variable containing information on the textual
 location of the grouping made by the current rule.  @xref{Tracking
 Locations}.
@@ -6445,7 +6558,7 @@ GNU Automake.
 @item
 @cindex bison-i18n.m4
 Into the directory containing the GNU Autoconf macros used
-by the package---often called @file{m4}---copy the
+by the package ---often called @file{m4}--- copy the
 @file{bison-i18n.m4} file installed by Bison under
 @samp{share/aclocal/bison-i18n.m4} in Bison's installation directory.
 For example:
@@ -8191,8 +8304,26 @@ clear the flag.
 
 Developing a parser can be a challenge, especially if you don't understand
 the algorithm (@pxref{Algorithm, ,The Bison Parser Algorithm}).  This
-chapter explains how to generate and read the detailed description of the
-automaton, and how to enable and understand the parser run-time traces.
+chapter explains how understand and debug a parser.
+
+The first sections focus on the static part of the parser: its structure.
+They explain how to generate and read the detailed description of the
+automaton.  There are several formats available:
+@itemize @minus
+@item
+as text, see @ref{Understanding, , Understanding Your Parser};
+
+@item
+as a graph, see @ref{Graphviz,, Visualizing Your Parser};
+
+@item
+or as a markup report that can be turned, for instance, into HTML, see
+@ref{Xml,, Visualizing your parser in multiple formats}.
+@end itemize
+
+The last section focuses on the dynamic part of the parser: how to enable
+and understand the parser run-time traces (@pxref{Tracing, ,Tracing Your
+Parser}).
 
 @menu
 * Understanding::     Understanding the structure of your parser.
@@ -8207,8 +8338,7 @@ automaton, and how to enable and understand the parser run-time traces.
 As documented elsewhere (@pxref{Algorithm, ,The Bison Parser Algorithm})
 Bison parsers are @dfn{shift/reduce automata}.  In some cases (much more
 frequent than one would hope), looking at this automaton is required to
-tune or simply fix a parser.  Bison provides two different
-representation of it, either textually or graphically (as a DOT file).
+tune or simply fix a parser.
 
 The textual file is generated when the options @option{--report} or
 @option{--verbose} are specified, see @ref{Invocation, , Invoking
@@ -8222,9 +8352,12 @@ The following grammar file, @file{calc.y}, will be used in the sequel:
 
 @example
 %token NUM STR
+@group
 %left '+' '-'
 %left '*'
+@end group
 %%
+@group
 exp:
   exp '+' exp
 | exp '-' exp
@@ -8232,6 +8365,7 @@ exp:
 | exp '/' exp
 | NUM
 ;
+@end group
 useless: STR;
 %%
 @end example
@@ -8241,8 +8375,8 @@ useless: STR;
 @example
 calc.y: warning: 1 nonterminal useless in grammar
 calc.y: warning: 1 rule useless in grammar
-calc.y:11.1-7: warning: nonterminal useless in grammar: useless
-calc.y:11.10-12: warning: rule useless in grammar: useless: STR
+calc.y:12.1-7: warning: nonterminal useless in grammar: useless
+calc.y:12.10-12: warning: rule useless in grammar: useless: STR
 calc.y: conflicts: 7 shift/reduce
 @end example
 
@@ -8336,7 +8470,7 @@ item is a production rule together with a point (@samp{.}) marking
 the location of the input cursor.
 
 @example
-state 0
+State 0
 
     0 $accept: . exp $end
 
@@ -8366,7 +8500,7 @@ you want to see more detail you can invoke @command{bison} with
 @option{--report=itemset} to list the derived items as well:
 
 @example
-state 0
+State 0
 
     0 $accept: . exp $end
     1 exp: . exp '+' exp
@@ -8384,7 +8518,7 @@ state 0
 In the state 1@dots{}
 
 @example
-state 1
+State 1
 
     5 exp: NUM .
 
@@ -8394,11 +8528,11 @@ state 1
 @noindent
 the rule 5, @samp{exp: NUM;}, is completed.  Whatever the lookahead token
 (@samp{$default}), the parser will reduce it.  If it was coming from
-state 0, then, after this reduction it will return to state 0, and will
+State 0, then, after this reduction it will return to state 0, and will
 jump to state 2 (@samp{exp: go to state 2}).
 
 @example
-state 2
+State 2
 
     0 $accept: exp . $end
     1 exp: exp . '+' exp
@@ -8426,7 +8560,7 @@ The state 3 is named the @dfn{final state}, or the @dfn{accepting
 state}:
 
 @example
-state 3
+State 3
 
     0 $accept: exp $end .
 
@@ -8441,7 +8575,7 @@ The interpretation of states 4 to 7 is straightforward, and is left to
 the reader.
 
 @example
-state 4
+State 4
 
     1 exp: exp '+' . exp
 
@@ -8450,7 +8584,7 @@ state 4
     exp  go to state 8
 
 
-state 5
+State 5
 
     2 exp: exp '-' . exp
 
@@ -8459,7 +8593,7 @@ state 5
     exp  go to state 9
 
 
-state 6
+State 6
 
     3 exp: exp '*' . exp
 
@@ -8468,7 +8602,7 @@ state 6
     exp  go to state 10
 
 
-state 7
+State 7
 
     4 exp: exp '/' . exp
 
@@ -8481,7 +8615,7 @@ As was announced in beginning of the report, @samp{State 8 conflicts:
 1 shift/reduce}:
 
 @example
-state 8
+State 8
 
     1 exp: exp . '+' exp
     1    | exp '+' exp .
@@ -8524,7 +8658,7 @@ with some set of possible lookahead tokens.  When run with
 @option{--report=lookahead}, Bison specifies these lookahead tokens:
 
 @example
-state 8
+State 8
 
     1 exp: exp . '+' exp
     1    | exp '+' exp .  [$end, '+', '-', '/']
@@ -8556,7 +8690,7 @@ The remaining states are similar:
 
 @example
 @group
-state 9
+State 9
 
     1 exp: exp . '+' exp
     2    | exp . '-' exp
@@ -8572,7 +8706,7 @@ state 9
 @end group
 
 @group
-state 10
+State 10
 
     1 exp: exp . '+' exp
     2    | exp . '-' exp
@@ -8587,7 +8721,7 @@ state 10
 @end group
 
 @group
-state 11
+State 11
 
     1 exp: exp . '+' exp
     2    | exp . '-' exp
@@ -8610,12 +8744,11 @@ state 11
 
 @noindent
 Observe that state 11 contains conflicts not only due to the lack of
-precedence of @samp{/} with respect to @samp{+}, @samp{-}, and
-@samp{*}, but also because the
-associativity of @samp{/} is not specified.
+precedence of @samp{/} with respect to @samp{+}, @samp{-}, and @samp{*}, but
+also because the associativity of @samp{/} is not specified.
 
-Note that Bison may also produce an HTML version of this output, via an XML
-file and XSLT processing (@pxref{Xml}).
+Bison may also produce an HTML version of this output, via an XML file and
+XSLT processing (@pxref{Xml,,Visualizing your parser in multiple formats}).
 
 @c ================================================= Graphical Representation
 
@@ -8635,7 +8768,10 @@ This file is generated when the @option{--graph} option is specified
 (@pxref{Invocation, , Invoking Bison}).  Its name is made by removing
 @samp{.tab.c} or @samp{.c} from the parser implementation file name, and
 adding @samp{.dot} instead.  If the grammar file is @file{foo.y}, the
-Graphviz output file is called @file{foo.dot}.
+Graphviz output file is called @file{foo.dot}.  A DOT file may also be
+produced via an XML file and XSLT processing (@pxref{Xml,,Visualizing your
+parser in multiple formats}).
+
 
 The following grammar file, @file{rr.y}, will be used in the sequel:
 
@@ -8648,10 +8784,20 @@ b: "0";
 @end group
 @end example
 
-The graphical output is very similar to the textual one, and as such it is
-easier understood by making direct comparisons between them. See
-@ref{Debugging, , Debugging Your Parser} for a detailled analysis of the
-textual report.
+The graphical output
+@ifnotinfo
+(see @ref{fig:graph})
+@end ifnotinfo
+is very similar to the textual one, and as such it is easier understood by
+making direct comparisons between them.  @xref{Debugging, , Debugging Your
+Parser}, for a detailled analysis of the textual report.
+
+@ifnotinfo
+@float Figure,fig:graph
+@image{figs/example, 430pt}
+@caption{A graphical rendering of the parser.}
+@end float
+@end ifnotinfo
 
 @subheading Graphical Representation of States
 
@@ -8676,7 +8822,7 @@ shift. The following describes a reduction in the @file{rr.output} file:
 
 @example
 @group
-state 3
+State 3
 
     1 exp: a . ";"
 
@@ -8697,7 +8843,7 @@ action for the given state, there is no such label.
 
 This is how reductions are represented in the verbose file @file{rr.output}:
 @example
-state 1
+State 1
 
     3 a: "0" .  [";"]
     4 b: "0" .  ["."]
@@ -8716,17 +8862,14 @@ reduction, see @ref{Shift/Reduce, , Shift/Reduce Conflicts}.  Discarded actions
 are distinguished by a red filling color on these nodes, just like how they are
 reported between square brackets in the verbose file.
 
-The reduction corresponding to the rule number 0 is the acceptation state. It
-is shown as a blue diamond, labelled "Acc".
+The reduction corresponding to the rule number 0 is the acceptation
+state. It is shown as a blue diamond, labelled ``Acc''.
 
 @subheading Graphical representation of go tos
 
 The @samp{go to} jump transitions are represented as dotted lines bearing
 the name of the rule being jumped to.
 
-Note that a DOT file may also be produced via an XML file and XSLT
-processing (@pxref{Xml}).
-
 @c ================================================= XML
 
 @node Xml
@@ -8734,8 +8877,10 @@ processing (@pxref{Xml}).
 @cindex xml
 
 Bison supports two major report formats: textual output
-(@pxref{Understanding}) when invoked with option @option{--verbose}, and DOT
-(@pxref{Graphviz}) when invoked with option @option{--graph}. However,
+(@pxref{Understanding, ,Understanding Your Parser}) when invoked
+with option @option{--verbose}, and DOT
+(@pxref{Graphviz,, Visualizing Your Parser}) when invoked with
+option @option{--graph}. However,
 another alternative is to output an XML file that may then be, with
 @command{xsltproc}, rendered as either a raw text format equivalent to the
 verbose file, or as an HTML version of the same file, with clickable
@@ -8743,7 +8888,7 @@ transitions, or even as a DOT. The @file{.output} and DOT files obtained via
 XSLT have no difference whatsoever with those obtained by invoking
 @command{bison} with options @option{--verbose} or @option{--graph}.
 
-The textual file is generated when the options @option{-x} or
+The XML file is generated when the options @option{-x} or
 @option{--xml[=FILE]} are specified, see @ref{Invocation,,Invoking Bison}.
 If not specified, its name is made by removing @samp{.tab.c} or @samp{.c}
 from the parser implementation file name, and adding @samp{.xml} instead.
@@ -8757,19 +8902,19 @@ files to apply to the XML file. Their names are non-ambiguous:
 @item xml2dot.xsl
 Used to output a copy of the DOT visualization of the automaton.
 @item xml2text.xsl
-Used to output a copy of the .output file.
+Used to output a copy of the @samp{.output} file.
 @item xml2xhtml.xsl
-Used to output an xhtml enhancement of the .output file.
+Used to output an xhtml enhancement of the @samp{.output} file.
 @end table
 
-Sample usage (requires @code{xsltproc}):
+Sample usage (requires @command{xsltproc}):
 @example
-$ bison -x input.y
+$ bison -x gr.y
 @group
 $ bison --print-datadir
 /usr/local/share/bison
 @end group
-$ xsltproc /usr/local/share/bison/xslt/xml2xhtml.xsl input.xml > input.html
+$ xsltproc /usr/local/share/bison/xslt/xml2xhtml.xsl gr.xml >gr.html
 @end example
 
 @c ================================================= Tracing
@@ -8960,7 +9105,7 @@ Entering state 24
 
 @noindent
 The previous reduction demonstrates the @code{%printer} directive for
-@code{<val>}: both the token @code{NUM} and the resulting non-terminal
+@code{<val>}: both the token @code{NUM} and the resulting nonterminal
 @code{exp} have @samp{1} as value.
 
 @example
@@ -9250,7 +9395,7 @@ Show caret errors, in a manner similar to GCC's
 @option{-fdiagnostics-show-caret}, or Clang's @option{-fcaret-diagnotics}. The
 location provided with the message is used to quote the corresponding line of
 the source file, underlining the important part of it with carets (^). Here is
-an example, using the following file @file{input.y}:
+an example, using the following file @file{in.y}:
 
 @example
 %type <ival> exp
@@ -9262,27 +9407,27 @@ When invoked with @option{-fcaret}, Bison will report:
 
 @example
 @group
-input.y:3.20-23: error: ambiguous reference: '$exp'
+in.y:3.20-23: error: ambiguous reference: '$exp'
  exp: exp '+' exp @{ $exp = $1 + $2; @};
                     ^^^^
 @end group
 @group
-input.y:3.1-3:       refers to: $exp at $$
+in.y:3.1-3:       refers to: $exp at $$
  exp: exp '+' exp @{ $exp = $1 + $2; @};
  ^^^
 @end group
 @group
-input.y:3.6-8:       refers to: $exp at $1
+in.y:3.6-8:       refers to: $exp at $1
  exp: exp '+' exp @{ $exp = $1 + $2; @};
       ^^^
 @end group
 @group
-input.y:3.14-16:     refers to: $exp at $3
+in.y:3.14-16:     refers to: $exp at $3
  exp: exp '+' exp @{ $exp = $1 + $2; @};
               ^^^
 @end group
 @group
-input.y:3.32-33: error: $2 of 'exp' has no declared type
+in.y:3.32-33: error: $2 of 'exp' has no declared type
  exp: exp '+' exp @{ $exp = $1 + $2; @};
                                 ^^
 @end group
@@ -10295,19 +10440,30 @@ It is convenient to use a typedef to shorten
 %@{
   typedef yy::calcxx_parser::token token;
 %@}
-           /* Convert ints to the actual type of tokens.  */
-[-+*/]     return yy::calcxx_parser::token_type (yytext[0]);
-":="       return token::ASSIGN;
-@{int@}      @{
-  errno = 0;
-  long n = strtol (yytext, NULL, 10);
-  if (! (INT_MIN <= n && n <= INT_MAX && errno != ERANGE))
-    driver.error (*yylloc, "integer is out of range");
-  yylval->ival = n;
-  return token::NUMBER;
-@}
-@{id@}       yylval->sval = new std::string (yytext); return token::IDENTIFIER;
-.          driver.error (*yylloc, "invalid character");
+         /* Convert ints to the actual type of tokens.  */
+[-+*/]   return yy::calcxx_parser::token_type (yytext[0]);
+
+":="     return token::ASSIGN;
+
+@group
+@{int@}    @{
+           errno = 0;
+           long n = strtol (yytext, NULL, 10);
+           if (! (INT_MIN <= n && n <= INT_MAX && errno != ERANGE))
+             driver.error (*yylloc, "integer is out of range");
+           yylval->ival = n;
+           return token::NUMBER;
+         @}
+@end group
+
+@group
+@{id@}     @{
+           yylval->sval = new std::string (yytext);
+           return token::IDENTIFIER;
+         @}
+@end group
+
+.        driver.error (*yylloc, "invalid character");
 %%
 @end example
 
@@ -11353,18 +11509,23 @@ In an action, the location of the left-hand side of the rule.
 @end deffn
 
 @deffn {Variable} @@@var{n}
+@deffnx {Symbol} @@@var{n}
 In an action, the location of the @var{n}-th symbol of the right-hand side
 of the rule.  @xref{Tracking Locations}.
+
+In a grammar, the Bison-generated nonterminal symbol for a mid-rule action
+with a semantical value.  @xref{Mid-Rule Action Translation}.
 @end deffn
 
 @deffn {Variable} @@@var{name}
-In an action, the location of a symbol addressed by name.  @xref{Tracking
-Locations}.
+@deffnx {Variable} @@[@var{name}]
+In an action, the location of a symbol addressed by @var{name}.
+@xref{Tracking Locations}.
 @end deffn
 
-@deffn {Variable} @@[@var{name}]
-In an action, the location of a symbol addressed by name.  @xref{Tracking
-Locations}.
+@deffn {Symbol} $@@@var{n}
+In a grammar, the Bison-generated nonterminal symbol for a mid-rule action
+with no semantical value.  @xref{Mid-Rule Action Translation}.
 @end deffn
 
 @deffn {Variable} $$
@@ -11378,12 +11539,8 @@ right-hand side of the rule.  @xref{Actions}.
 @end deffn
 
 @deffn {Variable} $@var{name}
-In an action, the semantic value of a symbol addressed by name.
-@xref{Actions}.
-@end deffn
-
-@deffn {Variable} $[@var{name}]
-In an action, the semantic value of a symbol addressed by name.
+@deffnx {Variable} $[@var{name}]
+In an action, the semantic value of a symbol addressed by @var{name}.
 @xref{Actions}.
 @end deffn
 
@@ -11401,8 +11558,9 @@ the grammar file.  @xref{Grammar Outline, ,Outline of a Bison
 Grammar}.
 @end deffn
 
-@deffn {Construct} /*@dots{}*/
-Comment delimiters, as in C.
+@deffn {Construct} /* @dots{} */
+@deffnx {Construct} // @dots{}
+Comments, as in C/C++.
 @end deffn
 
 @deffn {Delimiter} :
@@ -11885,7 +12043,7 @@ Data type of semantic values; @code{int} by default.
 @item Accepting state
 A state whose only action is the accept action.
 The accepting state is thus a consistent state.
-@xref{Understanding,,}.
+@xref{Understanding, ,Understanding Your Parser}.
 
 @item Backus-Naur Form (BNF; also called ``Backus Normal Form'')
 Formal method of specifying context-free grammars originally proposed

doc/figs/example.dot

@@ -0,0 +1,35 @@
+// Generated by GNU Bison 2.6.90.
+// Report bugs to <[email protected]>.
+// Home page: <http://www.gnu.org/software/bison/>.
+
+digraph "/tmp/fo.y"
+{
+  node [fontname = courier, shape = box, colorscheme = paired6]
+  edge [fontname = courier]
+
+  0 [label="State 0\n\l  0 $accept: . exp $end\l  1 exp: . a \";\"\l  2    | . b \".\"\l  3 a: . \"0\"\l  4 b: . \"0\"\l"]
+  0 -> 1 [style=solid label="\"0\""]
+  0 -> 2 [style=dashed label="exp"]
+  0 -> 3 [style=dashed label="a"]
+  0 -> 4 [style=dashed label="b"]
+  1 [label="State 1\n\l  3 a: \"0\" .  [\";\"]\l  4 b: \"0\" .  [\".\"]\l"]
+  1 -> "1R3" [style=solid]
+ "1R3" [label="R3", fillcolor=3, shape=diamond, style=filled]
+  1 -> "1R4" [label="[\".\"]", style=solid]
+ "1R4" [label="R4", fillcolor=3, shape=diamond, style=filled]
+  2 [label="State 2\n\l  0 $accept: exp . $end\l"]
+  2 -> 5 [style=solid label="$end"]
+  3 [label="State 3\n\l  1 exp: a . \";\"\l"]
+  3 -> 6 [style=solid label="\";\""]
+  4 [label="State 4\n\l  2 exp: b . \".\"\l"]
+  4 -> 7 [style=solid label="\".\""]
+  5 [label="State 5\n\l  0 $accept: exp $end .\l"]
+  5 -> "5R0" [style=solid]
+ "5R0" [label="Acc", fillcolor=1, shape=diamond, style=filled]
+  6 [label="State 6\n\l  1 exp: a \";\" .\l"]
+  6 -> "6R1" [style=solid]
+ "6R1" [label="R1", fillcolor=3, shape=diamond, style=filled]
+  7 [label="State 7\n\l  2 exp: b \".\" .\l"]
+  7 -> "7R2" [style=solid]
+ "7R2" [label="R2", fillcolor=3, shape=diamond, style=filled]
+}

doc/figs/example.y

@@ -0,0 +1,4 @@
+%%
+exp: a ";" | b ".";
+a: "0";
+b: "0";

doc/refcard.tex

@@ -19,7 +19,7 @@
 \def\finalout{\overfullrule=0pt}
 %\finalout
 
-% Copyright (c) 1998, 2001, 2009-2012 Free Software Foundation, Inc.
+% Copyright (c) 1998, 2001, 2009-2013 Free Software Foundation, Inc.
 %
 % This file is part of Bison.
 %

etc/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+## Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
 
 # 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

etc/README

@@ -16,7 +16,7 @@ straightforward use of _build/src/bison would.)
 
 --
 
-Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

etc/bench.pl.in

@@ -1,6 +1,6 @@
 #! /usr/bin/perl -w
 
-# Copyright (C) 2006, 2008-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008-2013 Free Software Foundation, Inc.
 #
 # This file is part of Bison, the GNU Compiler Compiler.
 #

examples/Makefile.am

@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005, 2009-2012 Free Software Foundation, Inc.
+## Copyright (C) 2005, 2009-2013 Free Software Foundation, Inc.
 
 # 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

examples/calc++/Makefile.am

@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005-2006, 2009-2012 Free Software Foundation, Inc.
+## Copyright (C) 2005-2006, 2009-2013 Free Software Foundation, Inc.
 
 # 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

examples/calc++/test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2012 Free Software Foundation, Inc.
+# Copyright (C) 2005-2013 Free Software Foundation, Inc.
 #
 # 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

examples/extexi

@@ -2,7 +2,7 @@
 
 # This file is part of GNU Bison
 
-# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2012 Free Software
+# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2013 Free Software
 # Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify

lib/.gitignore

@@ -275,7 +275,6 @@
 /bitrotate.c
 /math.c
 /sig-handler.c
-/stdio.c
 /unistd.c
 /wctype-h.c
 /getdelim.c

lib/Makefile.am

@@ -1,6 +1,6 @@
 # Make bison/lib.
 
-# Copyright (C) 2001-2004, 2006, 2008-2012 Free Software Foundation,
+# Copyright (C) 2001-2004, 2006, 2008-2013 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify

lib/abitset.c

@@ -1,6 +1,6 @@
 /* Array bitsets.
 
-   Copyright (C) 2002-2003, 2006, 2009-2012 Free Software Foundation,
+   Copyright (C) 2002-2003, 2006, 2009-2013 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

lib/abitset.h

@@ -1,6 +1,6 @@
 /* Functions to support abitsets.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/bbitset.h

@@ -1,6 +1,6 @@
 /* Base bitset stuff.
 
-   Copyright (C) 2002-2004, 2006, 2009-2012 Free Software Foundation,
+   Copyright (C) 2002-2004, 2006, 2009-2013 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

lib/bitset.c

@@ -1,6 +1,6 @@
 /* General bitsets.
 
-   Copyright (C) 2002-2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/bitset.h

@@ -1,6 +1,6 @@
 /* Generic bitsets.
 
-   Copyright (C) 2002-2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/bitset_stats.c

@@ -1,6 +1,6 @@
 /* Bitset statistics.
 
-   Copyright (C) 2002-2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/bitset_stats.h

@@ -1,6 +1,6 @@
 /* Functions to support bitset statistics.
 
-   Copyright (C) 2002-2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/bitsetv-print.c

@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2001-2002, 2004, 2006, 2009-2012 Free Software
+   Copyright (C) 2001-2002, 2004, 2006, 2009-2013 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/bitsetv-print.h

@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Akim Demaille (akim@freefriends.org).
 

lib/bitsetv.c

@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2001-2002, 2004-2006, 2009-2012 Free Software
+   Copyright (C) 2001-2002, 2004-2006, 2009-2013 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/bitsetv.h

@@ -1,6 +1,6 @@
 /* Bitset vectors.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/ebitset.c

@@ -1,6 +1,6 @@
 /* Functions to support expandable bitsets.
 
-   Copyright (C) 2002-2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/ebitset.h

@@ -1,6 +1,6 @@
 /* Functions to support ebitsets.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/get-errno.c

@@ -1,6 +1,6 @@
 /* get-errno.c - get and set errno.
 
-   Copyright (C) 2002, 2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2013 Free Software Foundation, Inc.
 
    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

lib/get-errno.h

@@ -1,6 +1,6 @@
 /* get-errno.h - get and set errno.
 
-   Copyright (C) 2002, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
 
    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

lib/lbitset.c

@@ -1,6 +1,6 @@
 /* Functions to support link list bitsets.
 
-   Copyright (C) 2002-2004, 2006, 2009-2012 Free Software Foundation,
+   Copyright (C) 2002-2004, 2006, 2009-2013 Free Software Foundation,
    Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).

lib/lbitset.h

@@ -1,6 +1,6 @@
 /* Functions to support lbitsets.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/libiberty.h

@@ -1,6 +1,6 @@
 /* Fake libiberty.h for Bison.
 
-   Copyright (C) 2002-2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2013 Free Software Foundation, Inc.
 
    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

lib/main.c

@@ -1,6 +1,6 @@
 /* Yacc library main function.
 
-   Copyright (C) 2002, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

lib/timevar.c

@@ -1,6 +1,6 @@
 /* Timing variables for measuring compiler performance.
 
-   Copyright (C) 2000, 2002, 2004, 2006, 2009-2012 Free Software
+   Copyright (C) 2000, 2002, 2004, 2006, 2009-2013 Free Software
    Foundation, Inc.
 
    Contributed by Alex Samuel <samuel@codesourcery.com>

lib/timevar.def

@@ -1,7 +1,7 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
    measure run-time performance of the compiler.
 
-   Copyright (C) 2002, 2007, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2007, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Akim Demaille <akim@freefriends.org>.
 

lib/timevar.h

@@ -1,6 +1,6 @@
 /* Timing variables for measuring compiler performance.
 
-   Copyright (C) 2000, 2002, 2004, 2009-2012 Free Software Foundation,
+   Copyright (C) 2000, 2002, 2004, 2009-2013 Free Software Foundation,
    Inc.
 
    Contributed by Alex Samuel <samuel@codesourcery.com>

lib/vbitset.c

@@ -1,6 +1,6 @@
 /* Variable array bitsets.
 
-   Copyright (C) 2002-2006, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002-2006, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/vbitset.h

@@ -1,6 +1,6 @@
 /* Functions to support vbitsets.
 
-   Copyright (C) 2002, 2004, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2009-2013 Free Software Foundation, Inc.
 
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 

lib/yyerror.c

@@ -1,6 +1,6 @@
 /* Yacc library error-printing function.
 
-   Copyright (C) 2002, 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

m4/bison-i18n.m4

@@ -1,6 +1,6 @@
 # bison-i18n.m4 serial 2
 
-dnl Copyright (C) 2005-2006, 2009-2012 Free Software Foundation, Inc.
+dnl Copyright (C) 2005-2006, 2009-2013 Free Software Foundation, Inc.
 
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,

m4/c-working.m4

@@ -1,6 +1,6 @@
 # Sanity test a C compiler.
 
-# Copyright (C) 2006, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2009-2013 Free Software Foundation, Inc.
 #
 # 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
@@ -24,6 +24,7 @@ AC_DEFUN([BISON_TEST_FOR_WORKING_C_COMPILER], [
 	 int test_array[CHAR_BIT];]])],
     [],
     [AC_MSG_FAILURE([cannot compile a simple C program])])
+   AC_SUBST([BISON_C_WORKS], [:])
 ])
 
 # BISON_CHECK_WITH_POSIXLY_CORRECT(CODE)
@@ -47,25 +48,32 @@ case $gl_had_POSIXLY_CORRECT in
 esac
 ])
 
-# BISON_C_COMPILER_POSIXLY_CORRECT
-# --------------------------------
-# Whether the compiler supports -g in POSIXLY_CORRECT mode.  clang-2.9
-# on OS X does not, because "clang-mp-2.9 -o test -g test.c" launches
-# "/usr/bin/dsymutil test -o test.dSYM" which fails with "error:
-# unable to open executable '-o'".
+# BISON_LANG_COMPILER_POSIXLY_CORRECT
+# -----------------------------------
+# Whether the compiler for the current language supports -g in
+# POSIXLY_CORRECT mode.  clang-2.9 on OS X does not, because
+# "clang-mp-2.9 -o test -g test.c" launches "/usr/bin/dsymutil test -o
+# test.dSYM" which fails with "error: unable to open executable '-o'".
 #
-# Sets C_COMPILER_POSIXLY_CORRECT to true/false.
-AC_DEFUN([BISON_C_COMPILER_POSIXLY_CORRECT],
-[AC_CACHE_CHECK([whether $CC supports POSIXLY_CORRECT=1],
-                [bison_cv_cc_supports_posixly_correct],
+# Sets <LANG>_COMPILER_POSIXLY_CORRECT to true/false.
+AC_DEFUN([BISON_LANG_COMPILER_POSIXLY_CORRECT],
+[AC_CACHE_CHECK([whether $_AC_CC supports POSIXLY_CORRECT=1],
+                [bison_cv_[]_AC_LANG_ABBREV[]_supports_posixly_correct],
 [BISON_CHECK_WITH_POSIXLY_CORRECT(
-[AC_LANG_PUSH([C])
-AC_LINK_IFELSE([AC_LANG_PROGRAM],
-                [bison_cv_cc_supports_posixly_correct=yes],
-                [bison_cv_cc_supports_posixly_correct=no])
-AC_LANG_POP([C])])])
-case $bison_cv_cc_supports_posixly_correct in
-  yes) AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [true]) ;;
-  no)  AC_SUBST([C_COMPILER_POSIXLY_CORRECT], [false]);;
+[AC_LINK_IFELSE([AC_LANG_PROGRAM],
+                [bison_cv_[]_AC_LANG_ABBREV[]_supports_posixly_correct=yes],
+                [bison_cv_[]_AC_LANG_ABBREV[]_supports_posixly_correct=no])])])
+case $bison_cv_[]_AC_LANG_ABBREV[]_supports_posixly_correct in
+  yes) AC_SUBST(_AC_LANG_PREFIX[_COMPILER_POSIXLY_CORRECT], [true]) ;;
+  no)  AC_SUBST(_AC_LANG_PREFIX[_COMPILER_POSIXLY_CORRECT], [false]);;
 esac
 ])
+
+# BISON_C_COMPILER_POSIXLY_CORRECT
+# --------------------------------
+# Whether the C compiler supports -g in POSIXLY_CORRECT mode.
+AC_DEFUN([BISON_C_COMPILER_POSIXLY_CORRECT],
+[AC_LANG_PUSH([C])
+BISON_LANG_COMPILER_POSIXLY_CORRECT
+AC_LANG_POP([C])
+])

m4/cxx.m4

@@ -1,7 +1,7 @@
 # -*- Autoconf -*-
 # Sanity-test a C++ compiler.
 #
-# Copyright (C) 2004, 2006, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2006, 2009-2013 Free Software Foundation, Inc.
 #
 # 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
@@ -58,3 +58,12 @@ AC_DEFUN([BISON_TEST_FOR_WORKING_CXX_COMPILER],
  AC_SUBST([BISON_CXX_WORKS])
  AM_CONDITIONAL(BISON_CXX_WORKS, test $bison_cv_cxx_works = yes)
 ])
+
+# BISON_CXX_COMPILER_POSIXLY_CORRECT
+# ----------------------------------
+# Whether the C++ compiler supports -g in POSIXLY_CORRECT mode.
+AC_DEFUN([BISON_CXX_COMPILER_POSIXLY_CORRECT],
+[AC_LANG_PUSH([C++])
+BISON_LANG_COMPILER_POSIXLY_CORRECT
+AC_LANG_POP([C++])
+])

m4/flex.m4

@@ -1,5 +1,5 @@
 # flex.m4 serial 2
-# Copyright (C) 2012 Free Software Foundation, Inc.
+# Copyright (C) 2012-2013 Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

m4/timevar.m4

@@ -1,7 +1,7 @@
 # -*- Autoconf -*-
 # Checks required to run `timevar', a time tracker.
 #
-# Copyright (C) 2002-2003, 2009-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2003, 2009-2013 Free Software Foundation, Inc.
 #
 # 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

src/AnnotationList.c

@@ -1,6 +1,6 @@
 /* IELR's inadequacy annotation list.
 
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

src/AnnotationList.h

@@ -1,6 +1,6 @@
 /* IELR's inadequacy annotation list.
 
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

src/InadequacyList.c

@@ -1,6 +1,6 @@
 /* IELR's inadequacy list.
 
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

src/InadequacyList.h

@@ -1,6 +1,6 @@
 /* IELR's inadequacy list.
 
-   Copyright (C) 2009-2012 Free Software Foundation, Inc.
+   Copyright (C) 2009-2013 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

src/LR0.c

@@ -1,6 +1,6 @@
 /* Generate the LR(0) parser states for Bison.
 
-   Copyright (C) 1984, 1986, 1989, 2000-2002, 2004-2007, 2009-2012 Free
+   Copyright (C) 1984, 1986, 1989, 2000-2002, 2004-2007, 2009-2013 Free
    Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.