Version 2.5.

* NEWS (2.5): Set date.

.cvsignore

@@ -1,31 +0,0 @@
-*.cache
-*.flc
-*.prj
-*~
-.tarball-version
-.version
-ABOUT-NLS
-COPYING
-GNUmakefile
-INSTALL
-Makefile
-Makefile.in
-_*
-a.exe
-a.out
-aclocal.m4
-b.out
-bison-*
-conf[0-9]*
-confdefs*
-config.log
-config.status
-configure
-configure.lineno
-conftest*
-gnulib
-javacomp.sh
-javaexec.sh
-patches
-releases
-stamp-h*

.gitignore

@@ -1,3 +1,4 @@
+
 /*.cache
 /*.flc
 /*.prj
@@ -26,6 +27,8 @@
 /gnulib
 /javacomp.sh
 /javaexec.sh
+/maint.mk
 /patches
 /releases
 /stamp-h*
+

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "gnulib"]
 	path = gnulib
 	url = git://git.savannah.gnu.org/gnulib.git
+[submodule "submodules/autoconf"]
+	path = submodules/autoconf
+	url = git://git.sv.gnu.org/autoconf.git

.x-update-copyright

@@ -0,0 +1,6 @@
+COPYING
+^bootstrap$
+^doc/fdl\.texi$
+^doc/gpl-3\.0\.texi$
+^doc/yacc\.1\.in$
+^src/parse-gram\.h$

HACKING

@@ -1,213 +0,0 @@
--*- outline -*-
-
-This file attempts to describe the rules to use when hacking Bison.
-Don't put this file into the distribution.
-
-Everything related to the development of Bison is on Savannah:
-
-	http://savannah.gnu.org/projects/bison/
-
-
-* Administrivia
-
-** If you incorporate a change from somebody on the net:
-First, if it is a large change, you must make sure they have signed
-the appropriate paperwork.  Second, be sure to add their name and
-email address to THANKS.
-
-** If a change fixes a test, mention the test in the ChangeLog entry.
-
-** Bug reports
-If somebody reports a new bug, mention his name in the ChangeLog entry
-and in the test case you write.  Put him into THANKS.
-
-The correct response to most actual bugs is to write a new test case
-which demonstrates the bug.  Then fix the bug, re-run the test suite,
-and check everything in.
-
-** You may find it useful to install the git-merge-changelog merge driver:
-
-  http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=lib/git-merge-changelog.c
-
-When following the generic installation instructions there, keep in mind that
-your clone of Bison's git repository already contains appropriate
-.gitattributes files, and running Bison's bootstrap script will make the
-necessary changes to .git/config.
-
-
-* Hacking
-
-** Visible changes
-Which include serious bug fixes, must be mentioned in NEWS.
-
-** Translations
-Only user visible strings are to be translated: error messages, bits
-of the .output file etc.  This excludes impossible error messages
-(comparable to assert/abort), and all the --trace output which is
-meant for the maintainers only.
-
-
-* Test suite
-
-** make check
-Use liberally.
-
-** Release checks
-Try to run the test suite with more severe conditions before a
-release:
-
-- Configure the package with --enable-gcc-warnings, so that one checks
-  that 1. Bison compiles cleanly, 2. the parsers it produces compile
-  cleanly too.
-
-- run `make maintainer-check' which:
-  - runs `valgrind -q bison' to run Bison under Valgrind.
-  - runs the parsers under Valgrind.
-  - runs the test suite with G++ as C compiler...
-
-- run `make maintainer-push-check', which runs `make maintainer-check'
-  while activating the push implementation and its pull interface wrappers
-  in many test cases that were originally written to exercise only the
-  pull implementation.  This makes certain the push implementation can
-  perform every task the pull implementation can.
-
-- run `make maintainer-xml-check', which runs `make maintainer-check'
-  while checking Bison's XML automaton report for every working grammar
-  passed to Bison in the test suite.  The check just diffs the output of
-  Bison's included XSLT style sheets with the output of --report=all and
-  --graph.
-
-- Change tests/atlocal/CFLAGS to add your preferred options.  For
-  instance, `-traditional' to check that the parsers are K&R.  Note
-  that it does not make sense for glr.c, which should be ANSI,
-  but currently is actually GNU C, nor for lalr1.cc.
-
-
-* Release Procedure
-
-** Try to get the *.pot files to the Translation Project at least one week
-before a stable release, to give them time to translate them.
-
-** Tests
-See above.
-
-** Update the foreign files
-Running `./bootstrap' in the top level should update them all for you.
-This covers PO files too.  Sometimes a PO file contains problems that
-causes it to be rejected by recent Gettext releases; please report
-these to the Translation Project.
-
-** Update README
-Make sure the information in this file is current.  Most notably, make sure it
-recommends a version of GNU M4 that is compatible with the latest Bison
-sources.
-
-** Update NEWS
-The version number, *and* the date of the release (including for
-betas).
-
-** Update ChangeLog
-Should have an entry similar to `Version 1.49b.'.
-
-** Update configure.ac
-Be sure PACKAGE_COPYRIGHT_YEAR is up-to-date.
-
-** Tag the release
-Before Bison will build with the right version number, you must tag the release
-in git.  Do this after all other changes.  The command is similar to:
-
-  git tag -a v2.3b
-
-The log message can be simply:
-
-  Bison 2.3b
-
-** Push
-Once `make distcheck' passes, push your changes and the tag.
-`git push' without arguments will not push the tag.
-
-** make alpha
-FIXME: `make alpha' is not maintained and is broken.  These
-instructions need to be replaced or removed.
-
-Running `make alpha' is absolutely perfect for beta releases: it makes
-the tarballs, the xdeltas, and prepares (in /tmp/) a proto
-announcement.  It is so neat, that that's what I use anyway for
-genuine releases, but adjusting things by hand (e.g., the urls in the
-announcement file, the ChangeLog which is not needed etc.).
-
-If it fails, you're on your own...
-
-It requires GNU Make.
-
-** Upload
-The generic GNU upload procedure is at:
-
-  http://www.gnu.org/prep/maintain/maintain.html#Automated-FTP-Uploads
-
-After following the instructions there to register your information so you're
-permitted to upload, here's a brief reminder of how to roll the tarballs and
-upload them:
-
-*** make distcheck
-*** gpg -b bison-2.3b.tar.gz
-*** In a file named `bison-2.3b.tar.gz.directive', type:
-
-      version: 1.1
-      directory: bison
-      filename: bison-2.3b.tar.gz
-
-*** gpg --clearsign bison-2.3b.tar.gz.directive
-*** ftp ftp-upload.gnu.org # Log in as anonymous.
-*** cd /incoming/alpha # cd /incoming/ftp for full release.
-*** put bison-2.3b.tar.gz # This can take a while.
-*** put bison-2.3b.tar.gz.sig
-*** put bison-2.3b.tar.gz.directive.asc
-*** Repeat all these steps for bison-2.3b.tar.bz2.
-
-** Announce
-To generate a template announcement file:
-
-  make RELEASE_TYPE=alpha gpg_key_ID=F125BDF3 announcement
-
-where alpha can be replaced by beta or major and F125BDF3 should be replaced
-with your key ID.  For an example of how to fill out the template, search the
-mailing list archives for the most recent release announcement.
-
-Complete/fix the announcement file, and send it at least to
-[email protected] (if a real release, or a ``serious beta''),
-[email protected], [email protected], [email protected],
-and [email protected].
-
-Send the same announcement on the comp.compilers newsgroup by sending
-email to [email protected].  Do not make any Cc as the moderator will
-throw away anything cross-posted or Cc'ed.  It really needs to be a
-separate message.
-
-** Bump the version number
-In configure.ac.  Run `make'.  So that developers don't accidentally add new
-items to the old NEWS entry, create a new empty NEWS entry something like:
-
-  Changes in version ?.? (????-??-??):
-
-Push these changes.
-
-
------
-
-Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008 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/>.

Makefile.am

@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
-## Foundation, Inc.
+
+## Copyright (C) 2001-2011 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
@@ -23,7 +23,7 @@ SUBDIRS = build-aux po runtime-po lib data src doc examples tests etc
 aclocaldir = @aclocaldir@
 aclocal_DATA = m4/bison-i18n.m4
 
-EXTRA_DIST = .prev-version .version cfg.mk maint.mk \
+EXTRA_DIST = .prev-version .version cfg.mk \
   OChangeLog PACKAGING \
   djgpp/Makefile.maint djgpp/README.in djgpp/config.bat \
   djgpp/config.sed djgpp/config.site djgpp/config_h.sed \
@@ -57,3 +57,12 @@ $(top_srcdir)/.version: configure
 	echo $(VERSION) > $@-t && mv $@-t $@
 dist-hook:
 	echo $(VERSION) > $(distdir)/.tarball-version
+
+.PHONY: update-b4-copyright update-package-copyright-year
+update-b4-copyright:
+	find data -type f                    \
+	  | grep -v -E '^data/bison.m4$$'    \
+	  | xargs $(build_aux)/$@
+	@echo 'warning: src/parse-gram.[hc] may need to be regenerated.'
+update-package-copyright-year:
+	$(build_aux)/$@ configure.ac

NEWS

@@ -1,6 +1,472 @@
 Bison News
 ----------
 
+* Changes in version 2.5 (2011-05-14):
+
+** Grammar symbol names can now contain non-initial dashes:
+
+  Consistently with directives (such as %error-verbose) and with
+  %define variables (e.g. push-pull), grammar symbol names may contain
+  dashes in any position except the beginning.  This is a GNU
+  extension over POSIX Yacc.  Thus, use of this extension is reported
+  by -Wyacc and rejected in Yacc mode (--yacc).
+
+** Named references:
+
+  Historically, Yacc and Bison have supported positional references
+  ($n, $$) to allow access to symbol values from inside of semantic
+  actions code.
+
+  Starting from this version, Bison can also accept named references.
+  When no ambiguity is possible, original symbol names may be used
+  as named references:
+
+    if_stmt : "if" cond_expr "then" then_stmt ';'
+    { $if_stmt = mk_if_stmt($cond_expr, $then_stmt); }
+
+  In the more common case, explicit names may be declared:
+
+    stmt[res] : "if" expr[cond] "then" stmt[then] "else" stmt[else] ';'
+    { $res = mk_if_stmt($cond, $then, $else); }
+
+  Location information is also accessible using @name syntax.  When
+  accessing symbol names containing dots or dashes, explicit bracketing
+  ($[sym.1]) must be used.
+
+  These features are experimental in this version.  More user feedback
+  will help to stabilize them.
+
+** IELR(1) and canonical LR(1):
+
+  IELR(1) is a minimal LR(1) parser table generation algorithm.  That
+  is, given any context-free grammar, IELR(1) generates parser tables
+  with the full language-recognition power of canonical LR(1) but with
+  nearly the same number of parser states as LALR(1).  This reduction
+  in parser states is often an order of magnitude.  More importantly,
+  because canonical LR(1)'s extra parser states may contain duplicate
+  conflicts in the case of non-LR(1) grammars, the number of conflicts
+  for IELR(1) is often an order of magnitude less as well.  This can
+  significantly reduce the complexity of developing of a grammar.
+
+  Bison can now generate IELR(1) and canonical LR(1) parser tables in
+  place of its traditional LALR(1) parser tables, which remain the
+  default.  You can specify the type of parser tables in the grammar
+  file with these directives:
+
+    %define lr.type lalr
+    %define lr.type ielr
+    %define lr.type canonical-lr
+
+  The default-reduction optimization in the parser tables can also be
+  adjusted using `%define lr.default-reductions'.  For details on both
+  of these features, see the new section `Tuning LR' in the Bison
+  manual.
+
+  These features are experimental.  More user feedback will help to
+  stabilize them.
+
+** LAC (Lookahead Correction) for syntax error handling:
+
+  Canonical LR, IELR, and LALR can suffer from a couple of problems
+  upon encountering a syntax error.  First, the parser might perform
+  additional parser stack reductions before discovering the syntax
+  error.  Such reductions can perform user semantic actions that are
+  unexpected because they are based on an invalid token, and they
+  cause error recovery to begin in a different syntactic context than
+  the one in which the invalid token was encountered.  Second, when
+  verbose error messages are enabled (with %error-verbose or the
+  obsolete `#define YYERROR_VERBOSE'), the expected token list in the
+  syntax error message can both contain invalid tokens and omit valid
+  tokens.
+
+  The culprits for the above problems are %nonassoc, default
+  reductions in inconsistent states, and parser state merging.  Thus,
+  IELR and LALR suffer the most.  Canonical LR can suffer only if
+  %nonassoc is used or if default reductions are enabled for
+  inconsistent states.
+
+  LAC is a new mechanism within the parsing algorithm that solves
+  these problems for canonical LR, IELR, and LALR without sacrificing
+  %nonassoc, default reductions, or state merging.  When LAC is in
+  use, canonical LR and IELR behave almost exactly the same for both
+  syntactically acceptable and syntactically unacceptable input.
+  While LALR still does not support the full language-recognition
+  power of canonical LR and IELR, LAC at least enables LALR's syntax
+  error handling to correctly reflect LALR's language-recognition
+  power.
+
+  Currently, LAC is only supported for deterministic parsers in C.
+  You can enable LAC with the following directive:
+
+    %define parse.lac full
+
+  See the new section `LAC' in the Bison manual for additional
+  details including a few caveats.
+
+  LAC is an experimental feature.  More user feedback will help to
+  stabilize it.
+
+** %define improvements:
+
+*** Can now be invoked via the command line:
+
+  Each of these command-line options
+
+    -D NAME[=VALUE]
+    --define=NAME[=VALUE]
+
+    -F NAME[=VALUE]
+    --force-define=NAME[=VALUE]
+
+  is equivalent to this grammar file declaration
+
+    %define NAME ["VALUE"]
+
+  except that the manner in which Bison processes multiple definitions
+  for the same NAME differs.  Most importantly, -F and --force-define
+  quietly override %define, but -D and --define do not.  For further
+  details, see the section `Bison Options' in the Bison manual.
+
+*** Variables renamed:
+
+  The following %define variables
+
+    api.push_pull
+    lr.keep_unreachable_states
+
+  have been renamed to
+
+    api.push-pull
+    lr.keep-unreachable-states
+
+  The old names are now deprecated but will be maintained indefinitely
+  for backward compatibility.
+
+*** Values no longer need to be quoted in the grammar file:
+
+  If a %define value is an identifier, it no longer needs to be placed
+  within quotations marks.  For example,
+
+    %define api.push-pull "push"
+
+  can be rewritten as
+
+    %define api.push-pull push
+
+*** Unrecognized variables are now errors not warnings.
+
+*** Multiple invocations for any variable is now an error not a warning.
+
+** Unrecognized %code qualifiers are now errors not warnings.
+
+** Character literals not of length one:
+
+  Previously, Bison quietly converted all character literals to length
+  one.  For example, without warning, Bison interpreted the operators in
+  the following grammar to be the same token:
+
+    exp: exp '++'
+       | exp '+' exp
+       ;
+
+  Bison now warns when a character literal is not of length one.  In
+  some future release, Bison will start reporting an error instead.
+
+** Destructor calls fixed for lookaheads altered in semantic actions:
+
+  Previously for deterministic parsers in C, if a user semantic action
+  altered yychar, the parser in some cases used the old yychar value to
+  determine which destructor to call for the lookahead upon a syntax
+  error or upon parser return.  This bug has been fixed.
+
+** C++ parsers use YYRHSLOC:
+
+  Similarly to the C parsers, the C++ parsers now define the YYRHSLOC
+  macro and use it in the default YYLLOC_DEFAULT.  You are encouraged
+  to use it.  If, for instance, your location structure has `first'
+  and `last' members, instead of
+
+      # define YYLLOC_DEFAULT(Current, Rhs, N)                             \
+        do                                                                 \
+          if (N)                                                           \
+            {                                                              \
+              (Current).first = (Rhs)[1].location.first;                   \
+              (Current).last  = (Rhs)[N].location.last;                    \
+            }                                                              \
+          else                                                             \
+            {                                                              \
+              (Current).first = (Current).last = (Rhs)[0].location.last;   \
+            }                                                              \
+        while (false)
+
+  use:
+
+      # define YYLLOC_DEFAULT(Current, Rhs, N)                             \
+        do                                                                 \
+          if (N)                                                           \
+            {                                                              \
+              (Current).first = YYRHSLOC (Rhs, 1).first;                   \
+              (Current).last  = YYRHSLOC (Rhs, N).last;                    \
+            }                                                              \
+          else                                                             \
+            {                                                              \
+              (Current).first = (Current).last = YYRHSLOC (Rhs, 0).last;   \
+            }                                                              \
+        while (false)
+
+** YYLLOC_DEFAULT in C++:
+
+  The default implementation of YYLLOC_DEFAULT used to be issued in
+  the header file.  It is now output in the implementation file, after
+  the user %code sections so that its #ifndef guard does not try to
+  override the user's YYLLOC_DEFAULT if provided.
+
+** YYFAIL now produces warnings and Java parsers no longer implement it:
+
+  YYFAIL has existed for many years as an undocumented feature of
+  deterministic parsers in C generated by Bison.  More recently, it was
+  a documented feature of Bison's experimental Java parsers.  As
+  promised in Bison 2.4.2's NEWS entry, any appearance of YYFAIL in a
+  semantic action now produces a deprecation warning, and Java parsers
+  no longer implement YYFAIL at all.  For further details, including a
+  discussion of how to suppress C preprocessor warnings about YYFAIL
+  being unused, see the Bison 2.4.2 NEWS entry.
+
+** Temporary hack for adding a semicolon to the user action:
+
+  Previously, Bison appended a semicolon to every user action for
+  reductions when the output language defaulted to C (specifically, when
+  neither %yacc, %language, %skeleton, or equivalent command-line
+  options were specified).  This allowed actions such as
+
+    exp: exp "+" exp { $$ = $1 + $3 };
+
+  instead of
+
+    exp: exp "+" exp { $$ = $1 + $3; };
+
+  As a first step in removing this misfeature, Bison now issues a
+  warning when it appends a semicolon.  Moreover, in cases where Bison
+  cannot easily determine whether a semicolon is needed (for example, an
+  action ending with a cpp directive or a braced compound initializer),
+  it no longer appends one.  Thus, the C compiler might now complain
+  about a missing semicolon where it did not before.  Future releases of
+  Bison will cease to append semicolons entirely.
+
+** Verbose syntax error message fixes:
+
+  When %error-verbose or the obsolete `#define YYERROR_VERBOSE' is
+  specified, syntax error messages produced by the generated parser
+  include the unexpected token as well as a list of expected tokens.
+  The effect of %nonassoc on these verbose messages has been corrected
+  in two ways, but a more complete fix requires LAC, described above:
+
+*** When %nonassoc is used, there can exist parser states that accept no
+    tokens, and so the parser does not always require a lookahead token
+    in order to detect a syntax error.  Because no unexpected token or
+    expected tokens can then be reported, the verbose syntax error
+    message described above is suppressed, and the parser instead
+    reports the simpler message, `syntax error'.  Previously, this
+    suppression was sometimes erroneously triggered by %nonassoc when a
+    lookahead was actually required.  Now verbose messages are
+    suppressed only when all previous lookaheads have already been
+    shifted or discarded.
+
+*** Previously, the list of expected tokens erroneously included tokens
+    that would actually induce a syntax error because conflicts for them
+    were resolved with %nonassoc in the current parser state.  Such
+    tokens are now properly omitted from the list.
+
+*** Expected token lists are still often wrong due to state merging
+    (from LALR or IELR) and default reductions, which can both add
+    invalid tokens and subtract valid tokens.  Canonical LR almost
+    completely fixes this problem by eliminating state merging and
+    default reductions.  However, there is one minor problem left even
+    when using canonical LR and even after the fixes above.  That is,
+    if the resolution of a conflict with %nonassoc appears in a later
+    parser state than the one at which some syntax error is
+    discovered, the conflicted token is still erroneously included in
+    the expected token list.  Bison's new LAC implementation,
+    described above, eliminates this problem and the need for
+    canonical LR.  However, LAC is still experimental and is disabled
+    by default.
+
+** Java skeleton fixes:
+
+*** A location handling bug has been fixed.
+
+*** The top element of each of the value stack and location stack is now
+    cleared when popped so that it can be garbage collected.
+
+*** Parser traces now print the top element of the stack.
+
+** -W/--warnings fixes:
+
+*** Bison now properly recognizes the `no-' versions of categories:
+
+  For example, given the following command line, Bison now enables all
+  warnings except warnings for incompatibilities with POSIX Yacc:
+
+    bison -Wall,no-yacc gram.y
+
+*** Bison now treats S/R and R/R conflicts like other warnings:
+
+  Previously, conflict reports were independent of Bison's normal
+  warning system.  Now, Bison recognizes the warning categories
+  `conflicts-sr' and `conflicts-rr'.  This change has important
+  consequences for the -W and --warnings command-line options.  For
+  example:
+
+    bison -Wno-conflicts-sr gram.y  # S/R conflicts not reported
+    bison -Wno-conflicts-rr gram.y  # R/R conflicts not reported
+    bison -Wnone            gram.y  # no conflicts are reported
+    bison -Werror           gram.y  # any conflict is an error
+
+  However, as before, if the %expect or %expect-rr directive is
+  specified, an unexpected number of conflicts is an error, and an
+  expected number of conflicts is not reported, so -W and --warning
+  then have no effect on the conflict report.
+
+*** The `none' category no longer disables a preceding `error':
+
+  For example, for the following command line, Bison now reports
+  errors instead of warnings for incompatibilities with POSIX Yacc:
+
+    bison -Werror,none,yacc gram.y
+
+*** The `none' category now disables all Bison warnings:
+
+  Previously, the `none' category disabled only Bison warnings for
+  which there existed a specific -W/--warning category.  However,
+  given the following command line, Bison is now guaranteed to
+  suppress all warnings:
+
+    bison -Wnone gram.y
+
+** Precedence directives can now assign token number 0:
+
+  Since Bison 2.3b, which restored the ability of precedence
+  directives to assign token numbers, doing so for token number 0 has
+  produced an assertion failure.  For example:
+
+    %left END 0
+
+  This bug has been fixed.
+
+* Changes in version 2.4.3 (2010-08-05):
+
+** Bison now obeys -Werror and --warnings=error for warnings about
+   grammar rules that are useless in the parser due to conflicts.
+
+** Problems with spawning M4 on at least FreeBSD 8 and FreeBSD 9 have
+   been fixed.
+
+** Failures in the test suite for GCC 4.5 have been fixed.
+
+** Failures in the test suite for some versions of Sun Studio C++ have
+   been fixed.
+
+** Contrary to Bison 2.4.2's NEWS entry, it has been decided that
+   warnings about undefined %prec identifiers will not be converted to
+   errors in Bison 2.5.  They will remain warnings, which should be
+   sufficient for POSIX while avoiding backward compatibility issues.
+
+** Minor documentation fixes.
+
+* Changes in version 2.4.2 (2010-03-20):
+
+** Some portability problems that resulted in failures and livelocks
+   in the test suite on some versions of at least Solaris, AIX, HP-UX,
+   RHEL4, and Tru64 have been addressed.  As a result, fatal Bison
+   errors should no longer cause M4 to report a broken pipe on the
+   affected platforms.
+
+** `%prec IDENTIFIER' requires IDENTIFIER to be defined separately.
+
+  POSIX specifies that an error be reported for any identifier that does
+  not appear on the LHS of a grammar rule and that is not defined by
+  %token, %left, %right, or %nonassoc.  Bison 2.3b and later lost this
+  error report for the case when an identifier appears only after a
+  %prec directive.  It is now restored.  However, for backward
+  compatibility with recent Bison releases, it is only a warning for
+  now.  In Bison 2.5 and later, it will return to being an error.
+  [Between the 2.4.2 and 2.4.3 releases, it was decided that this
+  warning will not be converted to an error in Bison 2.5.]
+
+** Detection of GNU M4 1.4.6 or newer during configure is improved.
+
+** Warnings from gcc's -Wundef option about undefined YYENABLE_NLS,
+   YYLTYPE_IS_TRIVIAL, and __STRICT_ANSI__ in C/C++ parsers are now
+   avoided.
+
+** %code is now a permanent feature.
+
+  A traditional Yacc prologue directive is written in the form:
+
+    %{CODE%}
+
+  To provide a more flexible alternative, Bison 2.3b introduced the
+  %code directive with the following forms for C/C++:
+
+    %code          {CODE}
+    %code requires {CODE}
+    %code provides {CODE}
+    %code top      {CODE}
+
+  These forms are now considered permanent features of Bison.  See the
+  %code entries in the section "Bison Declaration Summary" in the Bison
+  manual for a summary of their functionality.  See the section
+  "Prologue Alternatives" for a detailed discussion including the
+  advantages of %code over the traditional Yacc prologue directive.
+
+  Bison's Java feature as a whole including its current usage of %code
+  is still considered experimental.
+
+** YYFAIL is deprecated and will eventually be removed.
+
+  YYFAIL has existed for many years as an undocumented feature of
+  deterministic parsers in C generated by Bison.  Previously, it was
+  documented for Bison's experimental Java parsers.  YYFAIL is no longer
+  documented for Java parsers and is formally deprecated in both cases.
+  Users are strongly encouraged to migrate to YYERROR, which is
+  specified by POSIX.
+
+  Like YYERROR, you can invoke YYFAIL from a semantic action in order to
+  induce a syntax error.  The most obvious difference from YYERROR is
+  that YYFAIL will automatically invoke yyerror to report the syntax
+  error so that you don't have to.  However, there are several other
+  subtle differences between YYERROR and YYFAIL, and YYFAIL suffers from
+  inherent flaws when %error-verbose or `#define YYERROR_VERBOSE' is
+  used.  For a more detailed discussion, see:
+
+    http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html
+
+  The upcoming Bison 2.5 will remove YYFAIL from Java parsers, but
+  deterministic parsers in C will continue to implement it.  However,
+  because YYFAIL is already flawed, it seems futile to try to make new
+  Bison features compatible with it.  Thus, during parser generation,
+  Bison 2.5 will produce a warning whenever it discovers YYFAIL in a
+  rule action.  In a later release, YYFAIL will be disabled for
+  %error-verbose and `#define YYERROR_VERBOSE'.  Eventually, YYFAIL will
+  be removed altogether.
+
+  There exists at least one case where Bison 2.5's YYFAIL warning will
+  be a false positive.  Some projects add phony uses of YYFAIL and other
+  Bison-defined macros for the sole purpose of suppressing C
+  preprocessor warnings (from GCC cpp's -Wunused-macros, for example).
+  To avoid Bison's future warning, such YYFAIL uses can be moved to the
+  epilogue (that is, after the second `%%') in the Bison input file.  In
+  this release (2.4.2), Bison already generates its own code to suppress
+  C preprocessor warnings for YYFAIL, so projects can remove their own
+  phony uses of YYFAIL if compatibility with Bison releases prior to
+  2.4.2 is not necessary.
+
+** Internationalization.
+
+  Fix a regression introduced in Bison 2.4: Under some circumstances,
+  message translations were not installed although supported by the
+  host system.
+
 * Changes in version 2.4.1 (2008-12-11):
 
 ** In the GLR defines file, unexpanded M4 macros in the yylval and yylloc
@@ -1048,10 +1514,9 @@ End:
 
 -----
 
-Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 1995-2011 Free Software Foundation, Inc.
 
-This file is part of Bison, the GNU Compiler Compiler.
+This file is part of Bison, the GNU Parser Generator.
 
 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

PACKAGING

@@ -36,7 +36,7 @@ to the bison package.
 
 -----
 
-Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+Copyright (C) 2002, 2005, 2009-2011 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

README

@@ -1,31 +1,51 @@
 This package contains the GNU Bison parser generator.
 
-See the file INSTALL for generic compilation and installation instructions.
+* Installation
+** Build
+See the file INSTALL for generic compilation and installation
+instructions.
 
+Bison requires GNU m4 1.4.6 or later.  See:
+
+      ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
+
+** Internationalization
+Bison supports two catalogues: one for Bison itself (i.e., for the
+maintainer-side parser generation), and one for the generated parsers
+(i.e., for the user-side parser execution).  The requirements between
+both differ: bison needs ngettext, the generated parsers do not.  To
+simplify the build system, neither are installed if ngettext is not
+supported, even if generated parsers could have been localized.  See
+http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html for
+more details.
+
+* Questions
 See the section FAQ in the documentation (doc/bison.info) for
 frequently asked questions.  The documentation is also available in
 PDF and HTML, provided you have a recent version of Texinfo installed:
 run "make pdf" or "make html".
 
-Bison requires GNU m4 1.4.6 or later.  See:
-
-ftp://ftp.gnu.org/gnu/m4/m4-1.4.6.tar.gz
-
-Bison can work with pre-1.4.6 distributions of GNU m4 if they are
-sufficiently patched, but if you encounter a bug with an older
-distribution and report a bug we will probably suggest that you
-upgrade to 1.4.6 as the first step in trying to fix it.
+If you have questions about using Bison and the documentation does
+not answer them, please send mail to <[email protected]>.
 
+* Bug reports
 Please send bug reports to <[email protected]>.  Please include the
 version number from `bison --version', and a complete, self-contained
 test case in each bug report.
 
-If you have questions about using Bison and the documentation does
-not answer them, please send mail to <[email protected]>.
+* Copyright statements
+For any copyright year range specified as YYYY-ZZZZ in this package,
+note that the range specifies every single year in that closed interval.
+
+
+Local Variables:
+mode: outline
+End:
 
 -----
 
-Copyright (C) 1992, 1998, 1999, 2003, 2004, 2005, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2011 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 Free Software Foundation, Inc.
+Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

README-hacking

@@ -1,9 +1,58 @@
 -*- outline -*-
 
+This file attempts to describe the rules to use when hacking Bison.
+Don't put this file into the distribution.
+
+Everything related to the development of Bison is on Savannah:
+
+        http://savannah.gnu.org/projects/bison/
+
+
+* Administrivia
+
+** If you incorporate a change from somebody on the net:
+First, if it is a large change, you must make sure they have signed
+the appropriate paperwork.  Second, be sure to add their name and
+email address to THANKS.
+
+** If a change fixes a test, mention the test in the ChangeLog entry.
+
+** Bug reports
+If somebody reports a new bug, mention his name in the ChangeLog entry
+and in the test case you write.  Put him into THANKS.
+
+The correct response to most actual bugs is to write a new test case
+which demonstrates the bug.  Then fix the bug, re-run the test suite,
+and check everything in.
+
+** You may find it useful to install the git-merge-changelog merge driver:
+
+  http://git.sv.gnu.org/gitweb/?p=gnulib.git;a=blob;f=lib/git-merge-changelog.c
+
+When following the generic installation instructions there, keep in mind that
+your clone of Bison's git repository already contains appropriate
+.gitattributes files, and running Bison's bootstrap script will make the
+necessary changes to .git/config.
+
+
+* Hacking
+
+** Visible changes
+Which include serious bug fixes, must be mentioned in NEWS.
+
+** Translations
+Only user visible strings are to be translated: error messages, bits
+of the .output file etc.  This excludes impossible error messages
+(comparable to assert/abort), and all the --trace output which is
+meant for the maintainers only.
+
+
+* Working from the repository
+
 These notes intend to help people working on the checked-out sources.
 These requirements do not apply when building from a distribution tarball.
 
-* Requirements
+** Requirements
 
 We've opted to keep only the highest-level sources in the repository.
 This eases our maintenance burden, (fewer merges etc.), but imposes more
@@ -33,38 +82,310 @@ Only building the initial full source tree will be a bit painful.
 Later, after synchronizing from the repository a plain `make' should
 be sufficient.
 
-* First checkout
+** First checkout
 
 Obviously, if you are reading these notes, you did manage to check out
 this package from the repository.  For the record, you will find all the
 relevant information on:
 
-	http://savannah.gnu.org/cvs/?group_id=56
+        http://savannah.gnu.org/git/?group=bison
+
+Bison uses Git submodules: subscriptions to other Git repositories.
+In particular it uses gnulib, the GNU portability library.  To ask Git
+to perform the first checkout of the submodules, run
+
+       $ git submodule update --init
+
+Git submodule support is weak before versions 1.6 and later, you
+should probably upgrade Git if your version is older.
 
 The next step is to get other files needed to build, which are
 extracted from other source packages:
 
-	$ ./bootstrap
+        $ ./bootstrap
 
 And there you are!  Just
 
-	$ ./configure
-	$ make
-	$ make check
+        $ ./configure
+        $ make
+        $ make check
 
 At this point, there should be no difference between your local copy,
 and the master copy:
 
-	$ cvs diff
+        $ git diff
 
 should output no difference.
 
 Enjoy!
 
+** Updating
+
+The use of submodules make things somewhat different because git does
+not support recursive operations: submodules must be taken care of
+explicitly by the user.
+
+*** Updating Bison
+
+If you pull a newer version of a branch, say via `git pull', you might
+import requests for updated submodules.  A simple `git diff' will
+reveal if the current version of the submodule (i.e., the actual
+contents of the gnulib directory) and the current request from the
+subscriber (i.e., the reference of the version of gnulib that the
+Bison reporitory requests) differ.  To upgrade the submodules (i.e.,
+to check out the version that is actually requested by the subscriber,
+run `git submodule update'.
+
+        $ git pull
+        $ git submodule update
+
+*** Updating a submodule
+To update a submodule, say gnulib, do as follows:
+
+Get the most recent version of the master branch from git.
+
+        $ cd gnulib
+        $ git fetch
+        $ git checkout -b master --track origin/master
+
+Make sure Bison can live with that version of gnulib.
+
+        $ cd ..
+        $ ./bootstrap
+        $ make distcheck
+
+Register your changes.
+
+        $ git checkin ...
+
+For a suggestion of what gnulib commit might be stable enough for a
+formal release, see the ChangeLog in the latest gnulib snapshot at:
+
+        http://erislabs.net/ianb/projects/gnulib/
+
+The autoconf files we use are currently:
+
+        m4/m4.m4
+        lib/m4sugar/m4sugar.m4
+        lib/m4sugar/foreach.m4
+
+These files don't change very often in autoconf, so it should be
+relatively straight-forward to examine the differences in order to
+decide whether to update.
+
+* Test suite
+
+** make check
+Use liberally.
+
+** Release checks
+Try to run the test suite with more severe conditions before a
+release:
+
+- Configure the package with --enable-gcc-warnings, so that one checks
+  that 1. Bison compiles cleanly, 2. the parsers it produces compile
+  cleanly too.
+
+- Build with -DGNULIB_POSIXCHECK.  It suggests gnulib modules that can
+  fix portability issues.
+
+- run `make maintainer-check' which:
+  - runs `valgrind -q bison' to run Bison under Valgrind.
+  - runs the parsers under Valgrind.
+  - runs the test suite with G++ as C compiler...
+
+- run `make maintainer-push-check', which runs `make maintainer-check'
+  while activating the push implementation and its pull interface wrappers
+  in many test cases that were originally written to exercise only the
+  pull implementation.  This makes certain the push implementation can
+  perform every task the pull implementation can.
+
+- run `make maintainer-xml-check', which runs `make maintainer-check'
+  while checking Bison's XML automaton report for every working grammar
+  passed to Bison in the test suite.  The check just diffs the output of
+  Bison's included XSLT style sheets with the output of --report=all and
+  --graph.
+
+- Change tests/atlocal/CFLAGS to add your preferred options.  For
+  instance, `-traditional' to check that the parsers are K&R.  Note
+  that it does not make sense for glr.c, which should be ANSI,
+  but currently is actually GNU C, nor for lalr1.cc.
+
+
+* Release Procedure
+
+** Update the submodules.  See above.
+
+** Try to get the *.pot files to the Translation Project at least one
+week before a stable release, to give them time to translate them.
+Before generating the *.pot files, make sure that po/POTFILES.in and
+runtime-po/POTFILES.in list all files with translatable strings.
+This helps: grep -l '\<_(' *
+
+** Tests
+See above.
+
+** Update the foreign files
+Running `./bootstrap' in the top level should update them all for you.
+This covers PO files too.  Sometimes a PO file contains problems that
+causes it to be rejected by recent Gettext releases; please report
+these to the Translation Project.
+
+** Update README
+Make sure the information in README is current.  Most notably, make sure
+it recommends a version of GNU M4 that is compatible with the latest
+Bison sources.
+
+** Check copyright years.
+We update years in copyright statements throughout Bison once at the
+start of every year by running `make update-copyright'.  However, before
+a release, it's good to verify that it's actually been run.  Besides the
+copyright statement for each Bison file, check the copyright statements
+that the skeletons insert into generated parsers, and check all
+occurrences of PACKAGE_COPYRIGHT_YEAR in configure.ac.
+
+** Update NEWS
+The version number, *and* the date of the release (including for
+betas).
+
+** Update ChangeLog
+Should have an entry similar to `Version 1.49b.'.
+
+** Tag the release
+Before Bison will build with the right version number, you must tag the release
+in git.  Do this after all other changes.  The command is similar to:
+
+  git tag -a v2.3b
+
+The log message can be simply:
+
+  Bison 2.3b
+
+** Push
+Once `make distcheck' passes, push your changes and the tag.
+`git push' without arguments will not push the tag.
+
+** make alpha
+FIXME: `make alpha' is not maintained and is broken.  These
+instructions need to be replaced or removed.
+
+Running `make alpha' is absolutely perfect for beta releases: it makes
+the tarballs, the xdeltas, and prepares (in /tmp/) a proto
+announcement.  It is so neat, that that's what I use anyway for
+genuine releases, but adjusting things by hand (e.g., the urls in the
+announcement file, the ChangeLog which is not needed etc.).
+
+If it fails, you're on your own...
+
+It requires GNU Make.
+
+** Upload
+The generic GNU upload procedure is at:
+
+  http://www.gnu.org/prep/maintain/maintain.html#Automated-FTP-Uploads
+
+Follow the instructions there to register your information so you're permitted
+to upload.  Make sure your public key has been uploaded at least to
+keys.gnupg.net.  You can upload it with:
+
+  gpg --keyserver keys.gnupg.net --send-keys F125BDF3
+
+where F125BDF3 should be replaced with your key ID.
+
+Here's a brief reminder of how to roll the tarballs and upload them:
+
+*** make distcheck
+*** gpg -b bison-2.3b.tar.gz
+*** In a file named `bison-2.3b.tar.gz.directive', type:
+
+      version: 1.1
+      directory: bison
+      filename: bison-2.3b.tar.gz
+
+*** gpg --clearsign bison-2.3b.tar.gz.directive
+*** ftp ftp-upload.gnu.org # Log in as anonymous.
+*** cd /incoming/alpha # cd /incoming/ftp for full release.
+*** put bison-2.3b.tar.gz # This can take a while.
+*** put bison-2.3b.tar.gz.sig
+*** put bison-2.3b.tar.gz.directive.asc
+*** Repeat all these steps for bison-2.3b.tar.bz2.
+
+** Update Bison manual on www.gnu.org.
+
+*** You need a non-anonymous checkout of the web pages directory.
+
+  $ cvs -d [email protected]:/web/bison checkout bison
+
+*** Get familiar with the instructions for web page maintainers.
+http://www.gnu.org/server/standards/readme_index.html
+http://www.gnu.org/server/standards/README.software.html
+especially the note about symlinks.
+
+*** Build the web pages.
+Assuming BISON_CHECKOUT refers to a checkout of the Bison dir, and
+BISON_WWW_CHECKOUT refers to the web directory created above, do:
+
+  $ cd $BISON_CHECKOUT/doc
+  $ make stamp-vti
+  $ ../build-aux/gendocs.sh -o "$BISON_WWW_CHECKOUT/manual" \
+    bison "Bison - GNU parser generator"
+  $ cd $BISON_WWW_CHECKOUT
+
+Verify that the result looks sane.
+
+*** Commit the modified and the new files.
+
+*** Remove old files.
+Find the files which have not been overwritten (because they belonged to
+sections that have been removed or renamed):
+
+   $ cd manual/html_node
+   $ ls -lt
+
+Remove these files and commit their removal to CVS.  For each of these
+files, add a line to the file .symlinks.  This will ensure that
+hyperlinks to the removed files will redirect to the entire manual; this
+is better than a 404 error.
+
+There is a problem with 'index.html' being written twice (once for POSIX
+function 'index', once for the table of contents); you can ignore this
+issue.
+
+** Announce
+To generate a template announcement file:
+
+  make RELEASE_TYPE=alpha gpg_key_ID=F125BDF3 announcement
+
+where alpha can be replaced by beta or stable and F125BDF3 should be
+replaced with your key ID.
+
+Complete/fix the announcement file.  The generated list of recipients
+([email protected], [email protected], [email protected],
+[email protected], and [email protected]) is
+appropriate for a stable release or a ``serious beta''.  For any other
+release, drop at least [email protected].  For an example of how to fill
+out the rest of the template, search the mailing list archives for the
+most recent release announcement.
+
+For a stable release, send the same announcement on the comp.compilers
+newsgroup by sending email to [email protected].  Do not make any Cc as
+the moderator will throw away anything cross-posted or Cc'ed.  It really
+needs to be a separate message.
+
+** Bump the version number
+In configure.ac.  Run `make'.  So that developers don't accidentally add new
+items to the old NEWS entry, create a new empty NEWS entry something like:
+
+  Changes in version ?.? (????-??-??):
+
+Push these changes.
+
+
 -----
 
-Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software
-Foundation, Inc.
+Copyright (C) 2002-2005, 2007-2011 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

THANKS

@@ -8,12 +8,15 @@ Alexander Belopolsky      [email protected]
 Alexandre Duret-Lutz      [email protected]
 Andreas Schwab            [email protected]
 Andrew Suffield           [email protected]
+Angelo Borsotti           [email protected]
 Anthony Heading           [email protected]
 Arnold Robbins            [email protected]
 Art Haas                  [email protected]
 Baron Schwartz            [email protected]
 Benoit Perrot             [email protected]
+Bernd Kiefer              [email protected]
 Bert Deknuydt             [email protected]
+Bill Allombert            [email protected]
 Bob Rossi                 [email protected]
 Brandon Lucia             [email protected]
 Bruce Lilly               [email protected]
@@ -23,11 +26,13 @@ Christian Burger          [email protected]
 Cris Bailiff              [email protected]
 Cris van Pelt             [email protected]
 Csaba Raduly              [email protected]
+Dagobert Michelsen        [email protected]
 Daniel Hagerty            [email protected]
 David J. MacKenzie        [email protected]
 Derek M. Jones            [email protected]
 Di-an Jan                 [email protected]
 Dick Streefland           [email protected]
+Didier Godefroy           [email protected]
 Enrico Scholz             [email protected]
 Eric Blake                [email protected]
 Evgeny Stambulchik        [email protected]
@@ -36,26 +41,32 @@ Florian Krohm             [email protected]
 Frank Heckenbach          [email protected]
 Frans Englich             [email protected]
 Georg Sauthoff            [email protected]
+George Neuner             [email protected]
 Goran Uddeborg            [email protected]
 Guido Trentalancia        [email protected]
 H. Merijn Brand           [email protected]
 Hans Aberg                [email protected]
 Jan Nieuwenhuizen         [email protected]
+Jerry Quinn               [email protected]
 Jesse Thilo               [email protected]
 Jim Kent                  [email protected]
 Jim Meyering              [email protected]
-Joel E. Denny             jdenny@ces.clemson.edu
+Joel E. Denny             joeldenny@joeldenny.org
+Johan van Selst           [email protected]
+Jonathan Nieder           [email protected]
 Juan Manuel Guerrero      [email protected]
 Kees Zeelenberg           [email protected]
 Keith Browne              [email protected]
 Laurent Mascherpa         [email protected]
 Magnus Fromreide          [email protected]
 Marc Autret               [email protected]
+Martin Jacobs             [email protected]
 Martin Mokrejs            [email protected]
 Martin Nylin              [email protected]
 Matt Kraai                [email protected]
 Matt Rosing               [email protected]
 Michael Hayes             [email protected]
+Michael Raskin            [email protected]
 Mickael Labau             [email protected]
 Mike Castle               [email protected]
 Neil Booth                [email protected]
@@ -63,6 +74,7 @@ Nelson H. F. Beebe        [email protected]
 Nicolas Burrus            [email protected]
 Nicolas Tisserand         [email protected]
 Noah Friedman             [email protected]
+Odd Arild Olsen           [email protected]
 Oleg Smolsky              [email protected]
 Paolo Bonzini             [email protected]
 Pascal Bart               [email protected]
@@ -75,21 +87,23 @@ Piotr Gackiewicz          [email protected]
 Quoc Peyrot               [email protected]
 R Blake                   [email protected]
 Raja R Harinath           [email protected]
+Ralf Wildenhues           [email protected]
 Richard Stallman          [email protected]
 Robert Anisko             [email protected]
 Satya Kiran Popuri        [email protected]
-Sebastien Fricker         [email protected]
 Sebastian Setzer          [email protected]
+Sebastien Fricker         [email protected]
 Sergei Steshenko          [email protected]
 Shura                     [email protected]
 Steve Murphy              [email protected]
+Summum Bonum              [email protected]
 Tim Josling               [email protected]
 Tim Van Holder            [email protected]
 Tom Lane                  [email protected]
 Tom Tromey                [email protected]
 Tommy Nordgren            [email protected]
 Troy A. Johnson           [email protected]
-Tys Lefering              twlevo@xs4all.nl
+Tys Lefering              twlevo@gmail.com
 Vin Shelton               [email protected]
 Wayne Green               [email protected]
 Wolfram Wagner            [email protected]

TODO

@@ -22,9 +22,6 @@ parser") refers to the current `output' format.
 ** vector
 Move to using vector, drop stack.hh.
 
-** I18n
-Catch up with yacc.c.
-
 * Report
 
 **  GLR
@@ -290,8 +287,7 @@ Equip the parser with a means to create the (visual) parse tree.
 
 -----
 
-Copyright (C) 2001, 2002, 2003, 2004, 2006 Free Software Foundation,
-Inc.
+Copyright (C) 2001-2004, 2006, 2008-2011 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

bootstrap.conf

@@ -1,6 +1,6 @@
 # Bootstrap configuration.
 
-# Copyright (C) 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2006-2011 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
@@ -17,12 +17,17 @@
 
 # gnulib modules used by this package.
 gnulib_modules='
-	announce-gen argmatch config-h c-strcase configmake
-	dirname error extensions fopen-safer getopt gettext git-version-gen
-	gnumakefile hash inttypes javacomp-script javaexec-script malloc
-	mbswidth obstack quote quotearg stdbool stpcpy strerror strtoul
-	strverscmp unistd unistd-safer unlocked-io unsetenv verify
-	warnings xalloc xalloc-die xstrndup
+  announce-gen argmatch assert calloc-posix close config-h c-strcase
+  configmake dirname error extensions fopen-safer gendocs getopt-gnu
+  gettext git-version-gen hash inttypes isnan javacomp-script
+  javaexec-script ldexpl maintainer-makefile malloc-gnu mbschr mbsrchr
+  mbswidth obstack perror pipe-posix quote quotearg realloc-posix
+  spawn-pipe stdbool stpcpy strdup-posix strerror strtoul strverscmp
+  unistd unistd-safer unlocked-io update-copyright unsetenv verify
+  warnings xalloc xalloc-die xstrndup
+
+  fprintf-posix printf-posix snprintf-posix sprintf-posix
+  vsnprintf-posix vsprintf-posix
 '
 
 # Additional xgettext options to use.  Use "\\\newline" to break lines.
@@ -41,26 +46,30 @@ XGETTEXT_OPTIONS_RUNTIME=$XGETTEXT_OPTIONS'\\\
 # Gettext supplies these files, but we don't need them since
 # we don't have an intl subdirectory.
 excluded_files='
-    m4/codeset.m4
     m4/glibc2.m4
-    m4/glibc21.m4
     m4/intdiv0.m4
     m4/intl.m4
     m4/intldir.m4
     m4/intmax.m4
-    m4/inttypes_h.m4
     m4/lcmessage.m4
     m4/lock.m4
     m4/longdouble.m4
-    m4/printf-posix.m4
     m4/signed.m4
-    m4/size_max.m4
     m4/uintmax_t.m4
     m4/ulonglong.m4
     m4/visibility.m4
-    m4/xsize.m4
 '
 
-# In directories like lib/, m4/, and po/, generate both these files because we
-# still try to support CVS emulation.
-vc_ignore='.cvsignore .gitignore'
+bootstrap_epilogue()
+{
+  # Make sure we don't need src/bison, which usually doesn't exist at
+  # the time of a bootstrap.
+  touch src/parse-gram.[ch]
+}
+
+# Keep our bootstrap script in sync with gnulib's.  If we ever need to
+# maintain our own bootstrap script again, set this to false, remove
+# the bootstrap entry from the file .x-update-copyright, and add any
+# needed copyright years to the copyright statement in the bootstrap
+# script.
+bootstrap_sync=true

build-aux/.cvsignore

@@ -1,17 +0,0 @@
-Makefile
-Makefile.in
-announce-gen
-compile
-config.guess
-config.rpath
-config.sub
-depcomp
-git-version-gen
-install-sh
-javacomp.sh.in
-javaexec.sh.in
-link-warning.h
-mdate-sh
-missing
-texinfo.tex
-ylwrap

build-aux/.gitignore

@@ -1,11 +1,15 @@
+
 /Makefile
 /Makefile.in
 /announce-gen
+/arg-nonnull.h
+/c++defs.h
 /compile
 /config.guess
 /config.rpath
 /config.sub
 /depcomp
+/gendocs.sh
 /git-version-gen
 /install-sh
 /javacomp.sh.in
@@ -14,4 +18,9 @@
 /mdate-sh
 /missing
 /texinfo.tex
+/update-copyright
+/useless-if-before-free
+/vc-list-files
+/warn-on-use.h
 /ylwrap
+

build-aux/Makefile.am

@@ -1,2 +1,2 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-EXTRA_DIST = prev-version.txt cross-options.pl
+EXTRA_DIST = prev-version.txt cross-options.pl update-b4-copyright

build-aux/cross-options.pl

@@ -5,33 +5,75 @@ use 5.005;
 use strict;
 
 my %option;
-while (<>)
+my %directive;
+my $scanner = `grep -i '"%[a-z]' $ARGV[0]`;
+$scanner =~ s/"\[-_\]"/-/g;
+while (<STDIN>)
 {
-    if (/^\s*          # Initial spaces.
-        (?:(-\w),\s+)? # $1: Possible short option.
-        (--[-\w]+)     # $2: Long option.
-        (\[?)          # $3: '[' iff the argument is optional.
-        (?:=([-\w]+))? # $4: Possible argument name.
+    if (/^\s*             # Initial spaces.
+        (?:(-\w),\s+)?    # $1: $short: Possible short option.
+        (--[-\w]+)        # $2: $long:  Long option.
+        (\[?)             # $3: $opt:   '[' iff the argument is optional.
+        (?:=(\S+))?       # $4: $arg:   Possible argument name.
+        \s                # Spaces.
         /x)
     {
 	my ($short, $long, $opt, $arg) = ($1, $2, $3, $4);
-	$short = defined $short ? '@option{' . $short . '}' : '';
+	$short = '' if ! defined $short;
+	$short = '-d' if $long eq '--defines' && ! $short;
+	my $dir = '%' . substr($long, 2);
+	if (index ($scanner, "\"$dir\"") < 0)
+	{
+	  if ($long eq '--force-define') { $dir = '%define'; }
+	  else { $dir = ''; }
+	}
 	if ($arg)
 	{
+            # if $opt, $arg contains the closing ].
+            substr ($arg, -1) = ''
+                if $opt eq '[';
 	    $arg =~ s/^=//;
-	    $arg = '@var{' . lc ($arg) . '}';
-	    $arg = '[' . $arg . ']'
-		if $opt eq '[';
-	    $option{"$long=$arg"} = $short ? "$short $arg" : '';
-	}
-	else
-	{
-	    $option{"$long"} = "$short";
+            $arg = lc ($arg);
+	    my $dir_arg = $arg;
+            # If the argument is compite (e.g., for --define[=NAME[=VALUE]]),
+            # put each word in @var, to build @var{name}[=@var{value}], not
+            # @var{name[=value]}].
+	    $arg =~ s/(\w+)/\@var{$1}/g;
+	    my $long_arg = "=$arg";
+	    if ($opt eq '[') {
+	      $long_arg = "[$long_arg]";
+	      $arg = "[$arg]";
+	    }
+	    # For arguments of directives: this only works if all arguments
+	    # are strings and have the same syntax as on the command line.
+	    if ($dir_arg eq 'name[=value]')
+	    {
+		$dir_arg = '@var{name} ["@var{value}"]';
+	    }
+	    else
+	    {
+		$dir_arg =~ s/(\w+)/\@var{"$1"}/g;
+		$dir_arg = '[' . $dir_arg . ']'
+		    if $opt eq '[';
+	    }
+	    $long = "$long$long_arg";
+	    $short = "$short $arg" if $short && $short ne '-d';
+	    $dir = "$dir $dir_arg" if $dir;
 	}
+	$option{$long} = $short;
+	$directive{$long} = $dir;
     }
 }
 
+my $sep = '';
 foreach my $long (sort keys %option)
 {
-    printf "\@item %-40s \@tab %s\n", '@option{' . $long . '}', $option{$long};
+    # Avoid trailing spaces.
+    print $sep;
+    $sep = "\n";
+    print '@item @option{', $long, "}\n\@tab";
+    print ' @option{', $option{$long}, '}' if $option{$long};
+    print "\n\@tab";
+    print ' @code{', $directive{$long}, '}' if $directive{$long};
+    print "\n";
 }

build-aux/update-b4-copyright

@@ -0,0 +1,152 @@
+#!/usr/bin/perl -0777 -pi
+
+# Update b4_copyright invocations or b4_copyright_years definitions to
+# include the current year.
+
+# Copyright (C) 2009-2011 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
+# the Free Software Foundation; either version 3, 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/>.
+
+use strict;
+use warnings;
+
+my $margin = 72;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+my $old_re = <<'EOF'
+  (
+    (?:^|\n)
+    #BEFORE
+    (?:
+      b4_copyright\(\[[^][]*]
+      | m4_(?:push|pop)def\(\[b4_copyright_years]
+    )
+    #AFTER
+  )
+  (?:
+    ,\s*
+    (
+      \[\s* (?:\d{4}(?:,\s*|-))* (\d{4}) \s*]
+    )
+  )?
+  \)
+EOF
+  ;
+
+while (/($old_re)/gx)
+  {
+    my $start = pos() - length ($1);
+    my $b4_copyright_line = $2;
+    my $year_lines = $3;
+    my $final_year = $4;
+    $year_lines .= ')';
+
+    # If there was a second argument, it contains years, so update them.
+    if ($final_year)
+      {
+        $b4_copyright_line .= ',';
+        if ($final_year != $this_year)
+          {
+            # Update the year.
+            $year_lines =~ s/$final_year/$final_year, $this_year/;
+          }
+
+        # Normalize all whitespace.
+        $year_lines =~ s/\s+/ /g;
+
+        # Put spaces after commas.
+        $year_lines =~ s/, ?/, /g;
+
+        # Compress to intervals.
+        $year_lines =~
+          s/
+            (\d{4})
+            (?:
+              (,\ |-)
+              ((??{
+                if    ($2 eq '-') { '\d{4}'; }
+                elsif (!$3)       { $1 + 1;  }
+                else              { $3 + 1;  }
+              }))
+            )+
+          /$1-$3/gx;
+
+        # Format within margin.
+        my $year_lines_new;
+        my $indent = index ($b4_copyright_line, '[');
+        --$indent if ($b4_copyright_line =~ m/^\n/);
+        while (length $year_lines)
+          {
+            my $text_margin = $margin - $indent;
+            if (($year_lines =~ s/^(.{1,$text_margin})(?: |$)//)
+                || ($year_lines =~ s/^([\S]+)(?: |$)//))
+              {
+                my $line = "\n" . (' 'x$indent) . $1;
+                ++$indent if (!$year_lines_new);
+                $year_lines_new .= $line;
+              }
+            else
+              {
+                # Should be unreachable, but we don't want an infinite
+                # loop if it can be reached.
+                die;
+              }
+          }
+
+        # Replace the old invocation.  Should never die.
+        die if (!s/$old_re\G/$b4_copyright_line$year_lines_new/x);
+
+        # Prepare for the next search.
+        pos () = $start + length ("$b4_copyright_line$year_lines_new");
+      }
+  }
+
+while (/(\bb4_copyright\()/g)
+  {
+    my $start = pos () - length ($1);
+    my $end = pos ();
+    my $re = $old_re;
+    pos () = $start;
+    $re =~ s/\#BEFORE/\\G/;
+    if (!/$re/x)
+      {
+        my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+        print STDERR
+          "$ARGV:$line: warning: failed to update a b4_copyright\n";
+      }
+    pos () = $end;
+  }
+
+while (/(\[b4_copyright_years])/g)
+  {
+    my $start = pos () - length ($1);
+    my $end = pos ();
+    my $re = $old_re;
+    $re =~ s/\#AFTER/\\G/;
+    if (!/$re/x)
+      {
+        # The substr operation blows away pos (), so restoring pos ()
+        # at the end is necessary.
+        my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+        print STDERR
+          "$ARGV:$line: warning: failed to update a"
+          . " b4_copyright_years\n";
+      }
+    pos () = $end;
+  }

build-aux/update-package-copyright-year

@@ -0,0 +1,49 @@
+#!/usr/bin/perl -0777 -pi
+
+# In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
+
+# Copyright (C) 2010-2011 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
+# the Free Software Foundation; either version 3, 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/>.
+
+use strict;
+use warnings;
+
+my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
+if (!$this_year || $this_year !~ m/^\d{4}$/)
+  {
+    my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
+    $this_year = $year + 1900;
+  }
+my $old_re = <<'EOF'
+  (
+    MACRO\(
+    \[PACKAGE_COPYRIGHT_YEAR],
+    \s*\[
+  )
+  (\d{4})
+  (?=])
+EOF
+  ;
+foreach my $macro ("AC_DEFINE", "AC_SUBST")
+  {
+    my $this_old_re = $old_re;
+    $this_old_re =~ s/MACRO/$macro/;
+    if (!s/$this_old_re/$1$this_year/x)
+      {
+        print STDERR
+          "$ARGV: warning: failed to update PACKAGE_COPYRIGHT_YEAR in"
+          . " $macro.\n";
+      }
+  }

cfg.mk

@@ -1,5 +1,6 @@
 # Customize maint.mk                           -*- makefile -*-
-# Copyright (C) 2008 Free Software Foundation, Inc.
+
+# Copyright (C) 2008-2011 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
@@ -39,4 +40,14 @@ local-checks-to-skip = changelog-check
 
 # The local directory containing the checked-out copy of gnulib used in
 # this release.  Used solely to get a date for the "announcement" target.
-gnulib_dir = $(srcdir)/../../gnulib
+gnulib_dir = $(srcdir)/gnulib
+
+bootstrap-tools = autoconf,automake,flex,gettext,gnulib
+
+announcement_Cc_ = \
+  [email protected], [email protected], [email protected], \
+  [email protected]
+
+update-copyright: update-b4-copyright update-package-copyright-year
+update-copyright-env = \
+  UPDATE_COPYRIGHT_FORCE=1 UPDATE_COPYRIGHT_USE_INTERVALS=1

configure.ac

@@ -1,7 +1,6 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+# Copyright (C) 2001-2011 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
@@ -16,25 +15,36 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-# We have strange test case titles, so we need Autoconf 2.61 or better.
-AC_PREREQ(2.61)
+# In order for some versions of Sun Studio to compile our C++ test cases
+# correctly, we need Autoconf 2.64 or better to handle the restrict
+# keyword in at least string.h from gnulib.
+AC_PREREQ(2.64)
 
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
         [[email protected]])
-AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2008],
+AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2011],
           [The copyright year for this package])
-AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2008])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2011])
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 
-# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
-# We want gnits strictness only when rolling a formal release so that we can,
-# for example, run make dist at other times without being required to add a
-# bogus NEWS entry.
-AM_INIT_AUTOMAKE([1.8 dist-bzip2]
-                 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [-], [gnu], [gnits]))
+# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
+#
+#   http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
+#
+# To avoid 1.11, we make 1.11.1 the minimum version.
+#
+# We want gnits strictness only when rolling a stable release.  For
+# release candidates, we use version strings like 2.4.3_rc1, but gnits
+# doesn't like that, so we let the underscore disable gnits.  Between
+# releases, we want to be able run make dist without being required to
+# add a bogus NEWS entry.  In that case, the version string
+# automatically contains a dash, which we also let disable gnits.
+AM_INIT_AUTOMAKE([1.11.1 dist-bzip2]
+                 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
+                           [gnu], [gnits]))
 AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
 
 # Checks for the compiler.
@@ -68,7 +78,12 @@ if test "${enableval}" = yes; then
   gl_WARN_ADD([-Wshadow])
   gl_WARN_ADD([-Wstrict-prototypes])
   AC_SUBST([WARN_CFLAGS])
-  AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
+  # Warnings for the test suite only.
+  gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
+  WARN_CXXFLAGS_TEST="$WARN_CXXFLAGS $WARN_CFLAGS_TEST"
+  WARN_CFLAGS_TEST="$WARN_CFLAGS $WARN_CFLAGS_TEST"
+  AC_SUBST([WARN_CXXFLAGS_TEST])
+  AC_SUBST([WARN_CFLAGS_TEST])
 fi
 
 BISON_TEST_FOR_WORKING_C_COMPILER
@@ -92,11 +107,10 @@ AC_SUBST([YACC_LIBRARY])
 AC_PROG_LEX
 AC_PROG_YACC
 AC_PROG_RANLIB
-BISON_PROG_GNU_M4
-if test x"$ac_cv_prog_gnu_m4" != xyes; then
-  AC_MSG_ERROR([GNU M4 1.4 is required])
-fi
+AC_PROG_GNU_M4
 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
+AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
+supports -g, otherwise to "".])
 AM_MISSING_PROG([HELP2MAN], [help2man])
 AC_PATH_PROG([XSLTPROC], [xsltproc])
 AC_SUBST([XSLTPROC])
@@ -118,9 +132,10 @@ BISON_PREREQ_SUBPIPE
 BISON_PREREQ_TIMEVAR
 
 # Gettext.
-# We've never tested with gettext versions before 0.15, so play it safe.
-AM_GNU_GETTEXT([external], [need-formatstring-macros])
-AM_GNU_GETTEXT_VERSION([0.15])
+# We use gnulib, which is only guaranteed to work properly with the
+# latest Gettext.
+AM_GNU_GETTEXT([external], [need-ngettext])
+AM_GNU_GETTEXT_VERSION([0.18])
 BISON_I18N
 
 # Internationalized parsers.

data/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2002, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+## Copyright (C) 2002, 2005-2011 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 Free Software Foundation, Inc.
+Copyright (C) 2002, 2008-2011 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

data/bison.m4

@@ -1,8 +1,8 @@
                                                             -*- Autoconf -*-
 
 # Language-independent M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
-# Inc.
+
+# Copyright (C) 2002, 2004-2011 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
@@ -312,13 +312,13 @@ b4_define_user_code([stype])
 
 
 # b4_check_user_names(WHAT, USER-LIST, BISON-NAMESPACE)
-# --------------------------------------------------------
-# Warn if any name of type WHAT is used by the user (as recorded in USER-LIST)
-# but is not used by Bison (as recorded by macros in the namespace
-# BISON-NAMESPACE).
+# -----------------------------------------------------
+# Complain if any name of type WHAT is used by the user (as recorded in
+# USER-LIST) but is not used by Bison (as recorded by macros in the
+# namespace BISON-NAMESPACE).
 #
-# USER-LIST must expand to a list specifying all grammar occurrences of all
-# names of type WHAT.   Each item in the list must be a triplet specifying one
+# USER-LIST must expand to a list specifying all user occurrences of all names
+# of type WHAT.   Each item in the list must be a triplet specifying one
 # occurrence: name, start boundary, and end boundary.  Empty string names are
 # fine.  An empty list is fine.
 #
@@ -353,19 +353,35 @@ m4_pushdef([b4_user_name], m4_car(b4_occurrence))dnl
 m4_pushdef([b4_start], m4_car(m4_shift(b4_occurrence)))dnl
 m4_pushdef([b4_end], m4_shift(m4_shift(b4_occurrence)))dnl
 m4_ifndef($3[(]m4_quote(b4_user_name)[)],
-          [b4_warn_at([b4_start], [b4_end],
-                      [[%s `%s' is not used]],
-                      [$1], [b4_user_name])])[]dnl
+          [b4_complain_at([b4_start], [b4_end],
+                          [[%s `%s' is not used]],
+                          [$1], [b4_user_name])])[]dnl
 m4_popdef([b4_occurrence])dnl
 m4_popdef([b4_user_name])dnl
 m4_popdef([b4_start])dnl
 m4_popdef([b4_end])dnl
 ])])
 
-# b4_percent_define_get(VARIABLE)
+
+
+
+## --------------------- ##
+## b4_percent_define_*.  ##
+## --------------------- ##
+
+
+# b4_percent_define_use(VARIABLE)
 # -------------------------------
-# Mimic muscle_percent_define_get in ../src/muscle_tab.h exactly.  That is, if
-# the %define variable VARIABLE is defined, emit its value.  Also, record
+# Declare that VARIABLE was used.
+m4_define([b4_percent_define_use],
+[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
+])
+
+# b4_percent_define_get(VARIABLE, [DEFAULT])
+# ------------------------------------------
+# Mimic muscle_percent_define_get in ../src/muscle-tab.h.  That is, if
+# the %define variable VARIABLE is defined, emit its value.  Contrary
+# to its C counterpart, return DEFAULT otherwise.  Also, record
 # Bison's usage of VARIABLE by defining
 # b4_percent_define_bison_variables(VARIABLE).
 #
@@ -373,12 +389,15 @@ m4_popdef([b4_end])dnl
 #
 #   b4_percent_define_get([[foo]])
 m4_define([b4_percent_define_get],
-[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
-m4_ifdef([b4_percent_define(]$1[)], [m4_indir([b4_percent_define(]$1[)])])])
+[b4_percent_define_use([$1])dnl
+m4_ifdef([b4_percent_define(]$1[)],
+         [m4_indir([b4_percent_define(]$1[)])],
+         [$2])])
+
 
 # b4_percent_define_get_loc(VARIABLE)
 # -----------------------------------
-# Mimic muscle_percent_define_get_loc in ../src/muscle_tab.h exactly.  That is,
+# Mimic muscle_percent_define_get_loc in ../src/muscle-tab.h exactly.  That is,
 # if the %define variable VARIABLE is undefined, complain fatally since that's
 # a Bison or skeleton error.  Otherwise, return its definition location in a
 # form approriate for the first two arguments of b4_warn_at, b4_complain_at, or
@@ -397,7 +416,7 @@ m4_popdef([b4_loc])],
 
 # b4_percent_define_get_syncline(VARIABLE)
 # ----------------------------------------
-# Mimic muscle_percent_define_get_syncline in ../src/muscle_tab.h exactly.
+# Mimic muscle_percent_define_get_syncline in ../src/muscle-tab.h exactly.
 # That is, if the %define variable VARIABLE is undefined, complain fatally
 # since that's a Bison or skeleton error.  Otherwise, return its definition
 # location as a b4_syncline invocation.  Don't record this as a Bison usage of
@@ -414,7 +433,7 @@ m4_define([b4_percent_define_get_syncline],
 
 # b4_percent_define_ifdef(VARIABLE, IF-TRUE, [IF-FALSE])
 # ------------------------------------------------------
-# Mimic muscle_percent_define_ifdef in ../src/muscle_tab.h exactly.  That is,
+# Mimic muscle_percent_define_ifdef in ../src/muscle-tab.h exactly.  That is,
 # if the %define variable VARIABLE is defined, expand IF-TRUE, else expand
 # IF-FALSE.  Also, record Bison's usage of VARIABLE by defining
 # b4_percent_define_bison_variables(VARIABLE).
@@ -429,7 +448,7 @@ m4_define([b4_percent_define_ifdef],
 
 # b4_percent_define_flag_if(VARIABLE, IF-TRUE, [IF-FALSE])
 # --------------------------------------------------------
-# Mimic muscle_percent_define_flag_if in ../src/muscle_tab.h exactly.  That is,
+# Mimic muscle_percent_define_flag_if in ../src/muscle-tab.h exactly.  That is,
 # if the %define variable VARIABLE is defined to "" or "true", expand IF-TRUE.
 # If it is defined to "false", expand IF-FALSE.  Complain if it is undefined
 # (a Bison or skeleton error since the default value should have been set
@@ -452,7 +471,7 @@ m4_define([b4_percent_define_flag_if],
 
 # b4_percent_define_default(VARIABLE, DEFAULT)
 # --------------------------------------------
-# Mimic muscle_percent_define_default in ../src/muscle_tab.h exactly.  That is,
+# Mimic muscle_percent_define_default in ../src/muscle-tab.h exactly.  That is,
 # if the %define variable VARIABLE is undefined, set its value to DEFAULT.
 # Don't record this as a Bison usage of VARIABLE as there's no reason to
 # suspect that the value has yet influenced the output.
@@ -464,14 +483,13 @@ m4_define([b4_percent_define_default],
 [m4_ifndef([b4_percent_define(]$1[)],
            [m4_define([b4_percent_define(]$1[)], [$2])dnl
             m4_define([b4_percent_define_loc(]$1[)],
-                      [[[[[Bison:b4_percent_define_default]:1.0]], [[[Bison:b4_percent_define_default]:1.0]]]])dnl
-            m4_define([b4_percent_define_syncline(]$1[)],
-                      [[]b4_syncline(1, [["[Bison:b4_percent_define_default]"]])[
-]])])])
+                      [[[[<skeleton default value>:-1.-1]],
+                        [[<skeleton default value>:-1.-1]]]])dnl
+            m4_define([b4_percent_define_syncline(]$1[)], [[]])])])
 
 # b4_percent_define_check_values(VALUES)
 # --------------------------------------
-# Mimic muscle_percent_define_check_values in ../src/muscle_tab.h exactly
+# Mimic muscle_percent_define_check_values in ../src/muscle-tab.h exactly
 # except that the VALUES structure is more appropriate for M4.  That is, VALUES
 # is a list of sublists of strings.  For each sublist, the first string is the
 # name of a %define variable, and all remaining strings in that sublist are the
@@ -500,7 +518,11 @@ m4_define([_b4_percent_define_check_values],
          [b4_complain_at(b4_percent_define_get_loc([$1]),
                          [[invalid value for %%define variable `%s': `%s']],
                          [$1],
-                         m4_dquote(m4_indir([b4_percent_define(]$1[)])))])dnl
+                         m4_dquote(m4_indir([b4_percent_define(]$1[)])))
+          m4_foreach([b4_value], m4_dquote(m4_shift($@)),
+                     [b4_complain_at(b4_percent_define_get_loc([$1]),
+                                     [[accepted value: `%s']],
+                                     m4_dquote(b4_value))])])dnl
    m4_popdef([b4_good_value])],
   [b4_fatal([[undefined %%define variable `%s' passed to b4_percent_define_check_values]], [$1])])])
 

data/c++-skel.m4

@@ -1,7 +1,8 @@
                                                             -*- Autoconf -*-
 
 # C++ skeleton dispatching for Bison.
-# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+
+# Copyright (C) 2006-2007, 2009-2011 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

@@ -2,8 +2,7 @@
 
 # C++ skeleton for Bison
 
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2011 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 +25,12 @@ m4_include(b4_pkgdatadir/[c.m4])
 
 # Default parser class name.
 b4_percent_define_default([[parser_class_name]], [[parser]])
-b4_percent_define_default([[location_type]], [[location]])
+
+# Don't do that so that we remember whether we're using a user
+# request, or the default value.
+#
+# b4_percent_define_default([[location_type]], [[location]])
+
 b4_percent_define_default([[filename_type]], [[std::string]])
 b4_percent_define_default([[namespace]], m4_defn([b4_prefix]))
 b4_percent_define_default([[global_tokens_and_yystype]], [[false]])
@@ -74,10 +78,10 @@ m4_define([b4_namespace_open],
 
 m4_define([b4_namespace_close],
 [b4_user_code([b4_percent_define_get_syncline([[namespace]])
-m4_bpatsubst(m4_dquote(m4_bpatsubst(m4_dquote(b4_namespace_ref),
-                                    [^\(.\)[	 ]*\(::\)?\([^][:]\|:[^][:]\)*],
+m4_bpatsubst(m4_dquote(m4_bpatsubst(m4_dquote(b4_namespace_ref[ ]),
+                                    [^\(.\)[	 ]*\(::\)?\([^][:]\|:[^:]\)*],
                                     [\1])),
-             [::\([^][:]\|:[^][:]\)*], [} ])[} // ]b4_namespace_ref])])
+             [::\([^][:]\|:[^:]\)*], [} ])[} // ]b4_namespace_ref])])
 
 
 # b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)

data/c-skel.m4

@@ -1,7 +1,8 @@
                                                             -*- Autoconf -*-
 
 # C skeleton dispatching for Bison.
-# Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+
+# Copyright (C) 2006-2007, 2009-2011 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

@@ -1,8 +1,8 @@
                                                             -*- Autoconf -*-
 
 # C M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+
+# Copyright (C) 2002, 2004-2011 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
@@ -31,7 +31,7 @@ m4_define([b4_comment], [/* m4_bpatsubst([$1], [
 # -----------------
 # Depends on individual skeletons to define b4_pure_flag, b4_push_flag, or
 # b4_pull_flag if they use the values of the %define variables api.pure or
-# api.push_pull.
+# api.push-pull.
 m4_define([b4_identification],
 [[/* Identify Bison output.  */
 #define YYBISON 1
@@ -134,6 +134,17 @@ m4_define([b4_int_type_for],
 [b4_int_type($1_min, $1_max)])
 
 
+# b4_table_value_equals(TABLE, VALUE, LITERAL)
+# --------------------------------------------
+# Without inducing a comparison warning from the compiler, check if the
+# literal value LITERAL equals VALUE from table TABLE, which must have
+# TABLE_min and TABLE_max defined.  YYID must be defined as an identity
+# function that suppresses warnings about constant conditions.
+m4_define([b4_table_value_equals],
+[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
+               || m4_indir([b4_]$1[_max]) < $3), [1],
+       [[YYID (0)]],
+       [[((]$2[) == (]$3[))]])])
 
 ## ---------##
 ## Values.  ##

data/glr.c

@@ -1,8 +1,8 @@
                                                                     -*- C -*-
 
 # GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+
+# Copyright (C) 2002-2011 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
@@ -35,8 +35,8 @@ m4_define_default([b4_stack_depth_init],  [200])
 ## ------------------------ ##
 
 b4_define_flag_if([pure])
-# If glr.cc is including this file and thus has already set b4_pure_flag, don't
-# change the value of b4_pure_flag, and don't record a use of api.pure.
+# If glr.cc is including this file and thus has already set b4_pure_flag,
+# do not change the value of b4_pure_flag, and do not record a use of api.pure.
 m4_ifndef([b4_pure_flag],
 [b4_percent_define_default([[api.pure]], [[false]])
  m4_define([b4_pure_flag],
@@ -148,9 +148,9 @@ m4_define([b4_rhs_location],
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
-@output(b4_parser_file_name@)
+@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002-2011])
 [
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
@@ -248,7 +248,7 @@ b4_percent_code_get[]dnl
 #include <string.h>
 
 #ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -310,7 +310,8 @@ b4_percent_code_get[]dnl
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
 # if (! defined __GNUC__ || __GNUC__ < 2 \
-      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) \
+      || (defined __STRICT_ANSI__ && __STRICT_ANSI__))
 #  define __attribute__(Spec) /* empty */
 # endif
 #endif
@@ -412,9 +413,9 @@ static const ]b4_int_type_for([b4_merger])[ yymerger[] =
   ]b4_merger[
 };
 
-/* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-   doesn't specify something else to do.  Zero means the default is an
-   error.  */
+/* YYDEFACT[S] -- default reduction number in state S.  Performed when
+   YYTABLE doesn't specify something else to do.  Zero means the default
+   is an error.  */
 static const ]b4_int_type_for([b4_defact])[ yydefact[] =
 {
   ]b4_defact[
@@ -442,8 +443,7 @@ static const ]b4_int_type_for([b4_pgoto])[ yypgoto[] =
 
 /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
    positive, shift that token.  If negative, reduce the rule which
-   number is the opposite.  If zero, do what YYDEFACT says.
-   If YYTABLE_NINF, syntax error.  */
+   number is the opposite.  If YYTABLE_NINF, syntax error.  */
 #define YYTABLE_NINF ]b4_table_ninf[
 static const ]b4_int_type_for([b4_table])[ yytable[] =
 {
@@ -1013,17 +1013,15 @@ yylhsNonterm (yyRuleNum yyrule)
   return yyr1[yyrule];
 }
 
-#define yyis_pact_ninf(yystate) \
-  ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), [1],
-	 [0],
-	 [((yystate) == YYPACT_NINF)])[
+#define yypact_value_is_default(yystate) \
+  ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
 
 /** True iff LR state STATE has only a default reduction (regardless
  *  of token).  */
 static inline yybool
 yyisDefaultedState (yyStateNum yystate)
 {
-  return yyis_pact_ninf (yypact[yystate]);
+  return yypact_value_is_default (yypact[yystate]);
 }
 
 /** The default reduction for STATE, assuming it has one.  */
@@ -1033,10 +1031,8 @@ yydefaultAction (yyStateNum yystate)
   return yydefact[yystate];
 }
 
-#define yyis_table_ninf(yytable_value) \
-  ]m4_if(m4_eval(b4_table_ninf < b4_table_min), [1],
-	 [YYID (0)],
-	 [((yytable_value) == YYTABLE_NINF)])[
+#define yytable_value_is_error(yytable_value) \
+  ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
 
 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means
@@ -1051,12 +1047,13 @@ yygetLRActions (yyStateNum yystate, int yytoken,
 		int* yyaction, const short int** yyconflicts)
 {
   int yyindex = yypact[yystate] + yytoken;
-  if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
+  if (yypact_value_is_default (yypact[yystate])
+      || yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
     {
       *yyaction = -yydefact[yystate];
       *yyconflicts = yyconfl;
     }
-  else if (! yyis_table_ninf (yytable[yyindex]))
+  else if (! yytable_value_is_error (yytable[yyindex]))
     {
       *yyaction = yytable[yyindex];
       *yyconflicts = yyconfl + yyconflp[yyindex];
@@ -1805,7 +1802,7 @@ yyreportAmbiguity (yySemanticOption* yyx0,
 
   yyerror (]b4_yyerror_args[YY_("syntax is ambiguous"));
   return yyabort;
-}
+}]b4_locations_if([[
 
 /** Starting at and including state S1, resolve the location for each of the
  *  previous N1 states that is unresolved.  The first semantic option of a state
@@ -1863,7 +1860,7 @@ yyresolveLocations (yyGLRState* yys1, int yyn1,
 	  yylloc = yylloc_current;
 	}
     }
-}
+}]])[
 
 /** Resolve the ambiguity represented in state S, perform the indicated
  *  actions, and set the semantic value of S.  If result != yyok, the chain of
@@ -1897,8 +1894,8 @@ yyresolveValue (yyGLRState* yys, yyGLRStack* yystackp]b4_user_formals[)
 	{
 	  switch (yypreference (yybest, yyp))
 	    {
-	    case 0:
-	      yyresolveLocations (yys, 1, yystackp]b4_user_args[);
+	    case 0:]b4_locations_if([[
+	      yyresolveLocations (yys, 1, yystackp]b4_user_args[);]])[
 	      return yyreportAmbiguity (yybest, yyp]b4_pure_args[);
 	      break;
 	    case 1:
@@ -2091,102 +2088,130 @@ yyprocessOneStack (yyGLRStack* yystackp, size_t yyk,
 /*ARGSUSED*/ static void
 yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 {
-  if (yystackp->yyerrState == 0)
+  if (yystackp->yyerrState != 0)
+    return;
+#if ! YYERROR_VERBOSE
+  yyerror (]b4_lyyerror_args[YY_("syntax error"));
+#else
+  yySymbol yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE (yychar);
+  size_t yysize0 = yytnamerr (NULL, yytokenName (yytoken));
+  size_t yysize = yysize0;
+  size_t yysize1;
+  yybool yysize_overflow = yyfalse;
+  char* yymsg = NULL;
+  enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+  /* Internationalized format string. */
+  const char *yyformat = 0;
+  /* Arguments of yyformat. */
+  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+  /* Number of reported tokens (one for the "unexpected", one per
+     "expected").  */
+  int yycount = 0;
+
+  /* There are many possibilities here to consider:
+     - If this state is a consistent state with a default action, then
+       the only way this function was invoked is if the default action
+       is an error action.  In that case, don't check for expected
+       tokens because there are none.
+     - The only way there can be no lookahead present (in yychar) is if
+       this state is a consistent state with a default action.  Thus,
+       detecting the absence of a lookahead is sufficient to determine
+       that there is no unexpected or expected token to report.  In that
+       case, just report a simple "syntax error".
+     - Don't assume there isn't a lookahead just because this state is a
+       consistent state with a default action.  There might have been a
+       previous inconsistent state, consistent state with a non-default
+       action, or user semantic action that manipulated yychar.
+     - Of course, the expected token list depends on states to have
+       correct lookahead information, and it depends on the parser not
+       to perform extra reductions after fetching a lookahead from the
+       scanner and before detecting a syntax error.  Thus, state merging
+       (from LALR or IELR) and default reductions corrupt the expected
+       token list.  However, the list is correct for canonical LR with
+       one exception: it will still contain any token that will not be
+       accepted due to an error action in a later state.
+  */
+  if (yytoken != YYEMPTY)
     {
-#if YYERROR_VERBOSE
-      int yyn;
-      yyn = yypact[yystackp->yytops.yystates[0]->yylrState];
-      if (YYPACT_NINF < yyn && yyn <= YYLAST)
-	{
-	  yySymbol yytoken = YYTRANSLATE (yychar);
-	  size_t yysize0 = yytnamerr (NULL, yytokenName (yytoken));
-	  size_t yysize = yysize0;
-	  size_t yysize1;
-	  yybool yysize_overflow = yyfalse;
-	  char* yymsg = NULL;
-	  enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
-	  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
-	  int yyx;
-	  char *yyfmt;
-	  char const *yyf;
-	  static char const yyunexpected[] = "syntax error, unexpected %s";
-	  static char const yyexpecting[] = ", expecting %s";
-	  static char const yyor[] = " or %s";
-	  char yyformat[sizeof yyunexpected
-			+ sizeof yyexpecting - 1
-			+ ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
-			   * (sizeof yyor - 1))];
-	  char const *yyprefix = yyexpecting;
-
-	  /* Start YYX at -YYN if negative to avoid negative indexes in
-	     YYCHECK.  */
-	  int yyxbegin = yyn < 0 ? -yyn : 0;
-
-	  /* Stay within bounds of both yycheck and yytname.  */
-	  int yychecklim = YYLAST - yyn + 1;
-	  int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
-	  int yycount = 1;
-
-	  yyarg[0] = yytokenName (yytoken);
-	  yyfmt = yystpcpy (yyformat, yyunexpected);
-
-	  for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-	    if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
-	      {
-		if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
-		  {
-		    yycount = 1;
-		    yysize = yysize0;
-		    yyformat[sizeof yyunexpected - 1] = '\0';
-		    break;
-		  }
-		yyarg[yycount++] = yytokenName (yyx);
-		yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx));
-		yysize_overflow |= yysize1 < yysize;
-		yysize = yysize1;
-		yyfmt = yystpcpy (yyfmt, yyprefix);
-		yyprefix = yyor;
-	      }
-
-	  yyf = YY_(yyformat);
-	  yysize1 = yysize + strlen (yyf);
-	  yysize_overflow |= yysize1 < yysize;
-	  yysize = yysize1;
-
-	  if (!yysize_overflow)
-	    yymsg = (char *) YYMALLOC (yysize);
-
-	  if (yymsg)
-	    {
-	      char *yyp = yymsg;
-	      int yyi = 0;
-	      while ((*yyp = *yyf))
-		{
-		  if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
-		    {
-		      yyp += yytnamerr (yyp, yyarg[yyi++]);
-		      yyf += 2;
-		    }
-		  else
-		    {
-		      yyp++;
-		      yyf++;
-		    }
-		}
-	      yyerror (]b4_lyyerror_args[yymsg);
-	      YYFREE (yymsg);
-	    }
-	  else
-	    {
-	      yyerror (]b4_lyyerror_args[YY_("syntax error"));
-	      yyMemoryExhausted (yystackp);
-	    }
-	}
-      else
-#endif /* YYERROR_VERBOSE */
-	yyerror (]b4_lyyerror_args[YY_("syntax error"));
-      yynerrs += 1;
+      int yyn = yypact[yystackp->yytops.yystates[0]->yylrState];
+      yyarg[yycount++] = yytokenName (yytoken);
+      if (!yypact_value_is_default (yyn))
+        {
+          /* Start YYX at -YYN if negative to avoid negative indexes in
+             YYCHECK.  In other words, skip the first -YYN actions for this
+             state because they are default actions.  */
+          int yyxbegin = yyn < 0 ? -yyn : 0;
+          /* Stay within bounds of both yycheck and yytname.  */
+          int yychecklim = YYLAST - yyn + 1;
+          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
+          int yyx;
+          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
+            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR
+                && !yytable_value_is_error (yytable[yyx + yyn]))
+              {
+                if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+                  {
+                    yycount = 1;
+                    yysize = yysize0;
+                    break;
+                  }
+                yyarg[yycount++] = yytokenName (yyx);
+                yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx));
+                yysize_overflow |= yysize1 < yysize;
+                yysize = yysize1;
+              }
+        }
     }
+
+  switch (yycount)
+    {
+#define YYCASE_(N, S)                   \
+      case N:                           \
+        yyformat = S;                   \
+      break
+      YYCASE_(0, YY_("syntax error"));
+      YYCASE_(1, YY_("syntax error, unexpected %s"));
+      YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+      YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+      YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+      YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+#undef YYCASE_
+    }
+
+  yysize1 = yysize + strlen (yyformat);
+  yysize_overflow |= yysize1 < yysize;
+  yysize = yysize1;
+
+  if (!yysize_overflow)
+    yymsg = (char *) YYMALLOC (yysize);
+
+  if (yymsg)
+    {
+      char *yyp = yymsg;
+      int yyi = 0;
+      while ((*yyp = *yyformat))
+        {
+          if (*yyp == '%' && yyformat[1] == 's' && yyi < yycount)
+            {
+              yyp += yytnamerr (yyp, yyarg[yyi++]);
+              yyformat += 2;
+            }
+          else
+            {
+              yyp++;
+              yyformat++;
+            }
+        }
+      yyerror (]b4_lyyerror_args[yymsg);
+      YYFREE (yymsg);
+    }
+  else
+    {
+      yyerror (]b4_lyyerror_args[YY_("syntax error"));
+      yyMemoryExhausted (yystackp);
+    }
+#endif /* YYERROR_VERBOSE */
+  yynerrs += 1;
 }
 
 /* Recover from a syntax error on *YYSTACKP, assuming that *YYSTACKP->YYTOKENP,
@@ -2232,7 +2257,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 	    YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);
 	  }
 	yyj = yypact[yystackp->yytops.yystates[0]->yylrState];
-	if (yyis_pact_ninf (yyj))
+	if (yypact_value_is_default (yyj))
 	  return;
 	yyj += yytoken;
 	if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != yytoken)
@@ -2240,7 +2265,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
 	    if (yydefact[yystackp->yytops.yystates[0]->yylrState] != 0)
 	      return;
 	  }
-	else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))
+	else if (! yytable_value_is_error (yytable[yyj]))
 	  return;
       }
 
@@ -2261,7 +2286,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
     {
       yyGLRState *yys = yystackp->yytops.yystates[0];
       yyj = yypact[yys->yylrState];
-      if (! yyis_pact_ninf (yyj))
+      if (! yypact_value_is_default (yyj))
 	{
 	  yyj += YYTERROR;
 	  if (0 <= yyj && yyj <= YYLAST && yycheck[yyj] == YYTERROR
@@ -2323,7 +2348,7 @@ yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)
   yychar = YYEMPTY;
   yylval = yyval_default;
 ]b4_locations_if([
-#if YYLTYPE_IS_TRIVIAL
+#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
   yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
   yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
 #endif
@@ -2637,9 +2662,9 @@ dnl glr.cc produces its own header.
 dnl
 m4_if(b4_skeleton, ["glr.c"],
 [b4_defines_if(
-[@output(b4_spec_defines_file@)
+[@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-  [2002, 2003, 2004, 2005, 2006])
+             [2002-2011])
 
 b4_shared_declarations
 

data/glr.cc

@@ -1,8 +1,8 @@
                                                                     -*- C -*-
 
 # C++ GLR skeleton for Bison
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation,
-# Inc.
+
+# Copyright (C) 2002-2011 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
@@ -54,7 +54,8 @@ b4_defines_if([],
               [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
 
 m4_include(b4_pkgdatadir/[c++.m4])
-m4_include(b4_pkgdatadir/[location.cc])
+b4_percent_define_ifdef([[location_type]], [],
+                        [m4_include(b4_pkgdatadir/[location.cc])])
 
 m4_define([b4_parser_class_name],
           [b4_percent_define_get([[parser_class_name]])])
@@ -217,9 +218,9 @@ m4_include(b4_pkgdatadir/[glr.c])
 m4_popdef([b4_parse_param])
 
 m4_divert_push(0)
-@output(b4_spec_defines_file@)
+@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
-  [2002, 2003, 2004, 2005, 2006])[
+             [2002-2006, 2009-2011])[
 
 /* C++ GLR parser skeleton written by Akim Demaille.  */
 
@@ -230,17 +231,12 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C++],
 
 #include <string>
 #include <iostream>
+]b4_percent_define_ifdef([[location_type]], [],
+                         [[#include "location.hh"]])[
 
 /* Using locations.  */
 #define YYLSP_NEEDED ]b4_locations_flag[
 
-]b4_namespace_open[
-  class position;
-  class location;
-]b4_namespace_close[
-
-#include "location.hh"
-
 /* Enabling traces.  */
 #ifndef YYDEBUG
 # define YYDEBUG ]b4_debug_flag[
@@ -284,7 +280,8 @@ b4_user_stype
     typedef YYSTYPE semantic_type;
 #endif
     /// Symbol locations.
-    typedef ]b4_percent_define_get([[location_type]])[ location_type;
+    typedef ]b4_percent_define_get([[location_type]],
+                                   [[location]])[ location_type;
     /// Tokens.
     struct token
     {

data/java-skel.m4

@@ -1,7 +1,8 @@
                                                             -*- Autoconf -*-
 
 # Java skeleton dispatching for Bison.
-# Copyright (C) 2007 Free Software Foundation, Inc.
+
+# Copyright (C) 2007, 2009-2011 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, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2011 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

@@ -1,7 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
-# Free Software Foundation, Inc.
+# Copyright (C) 2002-2011 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
@@ -25,17 +24,18 @@ m4_define([b4_parser_class_name],
 b4_defines_if([],
               [b4_fatal([b4_skeleton[: using %%defines is mandatory]])])
 
-# Backward compatibility.
-m4_define([b4_location_constructors])
-m4_include(b4_pkgdatadir/[location.cc])
+b4_percent_define_ifdef([[location_type]], [],
+  [# Backward compatibility.
+  m4_define([b4_location_constructors])
+  m4_include(b4_pkgdatadir/[location.cc])])
 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
 b4_defines_if(
-[@output(b4_spec_defines_file@)
+[@output(b4_spec_defines_file@)@
 b4_copyright([Skeleton interface for Bison LALR(1) parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+             [2002-2011])
 dnl FIXME: This is wrong, we want computed header guards.
 [
 /* C++ LALR(1) parser skeleton written by Akim Demaille.  */
@@ -48,13 +48,8 @@ dnl FIXME: This is wrong, we want computed header guards.
 #include <string>
 #include <iostream>
 #include "stack.hh"
-
-]b4_namespace_open[
-  class position;
-  class location;
-]b4_namespace_close[
-
-#include "location.hh"
+]b4_percent_define_ifdef([[location_type]], [],
+                         [[#include "location.hh"]])[
 
 /* Enabling traces.  */
 #ifndef YYDEBUG
@@ -74,25 +69,6 @@ dnl FIXME: This is wrong, we want computed header guards.
 # define YYTOKEN_TABLE ]b4_token_table[
 #endif
 
-/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
-   If N is 0, then set CURRENT to the empty location which ends
-   the previous symbol: RHS[0] (always defined).  */
-
-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N)		\
-do {							\
-  if (N)						\
-    {							\
-      (Current).begin = (Rhs)[1].begin;			\
-      (Current).end   = (Rhs)[N].end;			\
-    }							\
-  else							\
-    {							\
-      (Current).begin = (Current).end = (Rhs)[0].end;	\
-    }							\
-} while (false)
-#endif
-
 ]b4_namespace_open[
 
   /// A Bison parser.
@@ -113,7 +89,8 @@ b4_user_stype
     typedef YYSTYPE semantic_type;
 #endif
     /// Symbol locations.
-    typedef ]b4_percent_define_get([[location_type]])[ location_type;
+    typedef ]b4_percent_define_get([[location_type]],
+                                   [[location]])[ location_type;
     /// Tokens.
     struct token
     {
@@ -153,8 +130,7 @@ b4_user_stype
     /// Generate an error message.
     /// \param state   the state where the error occurred.
     /// \param tok     the lookahead token.
-    virtual std::string yysyntax_error_ (int yystate]dnl
-b4_error_verbose_if([, int tok])[);
+    virtual std::string yysyntax_error_ (int yystate, int tok);
 
 #if YYDEBUG
     /// \brief Report a symbol value on the debug stream.
@@ -190,6 +166,14 @@ b4_error_verbose_if([, int tok])[);
     /// The location stack.
     location_stack_type yylocation_stack_;
 
+    /// Whether the given \c yypact_ value indicates a defaulted state.
+    /// \param yyvalue   the value to check
+    static bool yy_pact_value_is_default_ (int yyvalue);
+
+    /// Whether the given \c yytable_ value indicates a syntax error.
+    /// \param yyvalue   the value to check
+    static bool yy_table_value_is_error_ (int yyvalue);
+
     /// Internal symbol numbers.
     typedef ]b4_int_type_for([b4_translate])[ token_number_type;
     /* Tables.  */
@@ -197,7 +181,7 @@ b4_error_verbose_if([, int tok])[);
     static const ]b4_int_type_for([b4_pact])[ yypact_[];
     static const ]b4_int_type(b4_pact_ninf, b4_pact_ninf)[ yypact_ninf_;
 
-    /// For a state, default rule to reduce.
+    /// For a state, default reduction number.
     /// Unless\a  yytable_ specifies something else to do.
     /// Zero means the default is an error.
     static const ]b4_int_type_for([b4_defact])[ yydefact_[];
@@ -226,12 +210,10 @@ b4_error_verbose_if([, int tok])[);
 #if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
     /// For a symbol, its name in clear.
     static const char* const yytname_[];
-#endif
+#endif]b4_error_verbose_if([
 
-#if YYERROR_VERBOSE
     /// Convert the symbol name \a n to a form suitable for a diagnostic.
-    virtual std::string yytnamerr_ (const char *n);
-#endif
+    static std::string yytnamerr_ (const char *n);])[
 
 #if YYDEBUG
     /// A type to store symbol numbers and -1.
@@ -298,9 +280,9 @@ b4_percent_code_get([[provides]])[]dnl
 
 [#endif /* ! defined PARSER_HEADER_H */]
 ])dnl
-@output(b4_parser_file_name@)
+@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])
+             [2002-2011])
 b4_percent_code_get([[top]])[]dnl
 m4_if(b4_prefix, [yy], [],
 [
@@ -318,7 +300,7 @@ b4_defines_if([[
 b4_percent_code_get[]dnl
 
 [#ifndef YY_
-# if YYENABLE_NLS
+# if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* FIXME: INFRINGES ON USER NAME SPACE */
 #   define YY_(msgid) dgettext ("bison-runtime", msgid)
@@ -329,6 +311,26 @@ b4_percent_code_get[]dnl
 # endif
 #endif
 
+/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+   If N is 0, then set CURRENT to the empty location which ends
+   the previous symbol: RHS[0] (always defined).  */
+
+#define YYRHSLOC(Rhs, K) ((Rhs)[K])
+#ifndef YYLLOC_DEFAULT
+# define YYLLOC_DEFAULT(Current, Rhs, N)                               \
+ do                                                                    \
+   if (N)                                                              \
+     {                                                                 \
+       (Current).begin = YYRHSLOC (Rhs, 1).begin;                      \
+       (Current).end   = YYRHSLOC (Rhs, N).end;                        \
+     }                                                                 \
+   else                                                                \
+     {                                                                 \
+       (Current).begin = (Current).end = YYRHSLOC (Rhs, 0).end;        \
+     }                                                                 \
+ while (false)
+#endif
+
 /* Suppress unused-variable warnings by "using" E.  */
 #define YYUSE(e) ((void) (e))
 
@@ -377,8 +379,7 @@ do {					\
 #define YYERROR		goto yyerrorlab
 #define YYRECOVERING()  (!!yyerrstatus_)
 
-]b4_namespace_open[
-#if YYERROR_VERBOSE
+]b4_namespace_open[]b4_error_verbose_if([[
 
   /* Return YYSTR after stripping away unnecessary quotes and
      backslashes, so that it's suitable for yyerror.  The heuristic is
@@ -416,8 +417,7 @@ do {					\
 
     return yystr;
   }
-
-#endif
+]])[
 
   /// Build a parser object.
   ]b4_parser_class_name::b4_parser_class_name[ (]b4_parse_param_decl[)]m4_ifset([b4_parse_param], [
@@ -518,6 +518,18 @@ do {					\
   }
 #endif
 
+  inline bool
+  ]b4_parser_class_name[::yy_pact_value_is_default_ (int yyvalue)
+  {
+    return yyvalue == yypact_ninf_;
+  }
+
+  inline bool
+  ]b4_parser_class_name[::yy_table_value_is_error_ (int yyvalue)
+  {
+    return yyvalue == yytable_ninf_;
+  }
+
   int
   ]b4_parser_class_name[::parse ()
   {
@@ -539,7 +551,7 @@ do {					\
     /// Location of the lookahead.
     location_type yylloc;
     /// The locations where the error started and ended.
-    location_type yyerror_range[2];
+    location_type yyerror_range[3];
 
     /// $$.
     semantic_type yyval;
@@ -584,7 +596,7 @@ m4_popdef([b4_at_dollar])])dnl
 
     /* Try to take a decision without lookahead.  */
     yyn = yypact_[yystate];
-    if (yyn == yypact_ninf_)
+    if (yy_pact_value_is_default_ (yyn))
       goto yydefault;
 
     /* Read a lookahead token.  */
@@ -620,8 +632,8 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
     yyn = yytable_[yyn];
     if (yyn <= 0)
       {
-	if (yyn == 0 || yyn == yytable_ninf_)
-	goto yyerrlab;
+	if (yy_table_value_is_error_ (yyn))
+	  goto yyerrlab;
 	yyn = -yyn;
 	goto yyreduce;
       }
@@ -679,6 +691,17 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
 	default:
           break;
       }
+    /* User semantic actions sometimes alter yychar, and that requires
+       that yytoken be updated with the new translation.  We take the
+       approach of translating immediately before every use of yytoken.
+       One alternative is translating here after every semantic action,
+       but that translation would be missed if the semantic action
+       invokes YYABORT, YYACCEPT, or YYERROR immediately after altering
+       yychar.  In the case of YYABORT or YYACCEPT, an incorrect
+       destructor might then be invoked immediately.  In the case of
+       YYERROR, subsequent parser actions might lead to an incorrect
+       destructor call or verbose syntax error message before the
+       lookahead is translated.  */
     YY_SYMBOL_PRINT ("-> $$ =", yyr1_[yyn], &yyval, &yyloc);
 
     yypop_ (yylen);
@@ -702,15 +725,20 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))[;
   | yyerrlab -- here on detecting error |
   `------------------------------------*/
   yyerrlab:
+    /* Make sure we have latest lookahead translation.  See comments at
+       user semantic actions for why this is necessary.  */
+    yytoken = yytranslate_ (yychar);
+
     /* If not already recovering from an error, report this error.  */
     if (!yyerrstatus_)
       {
 	++yynerrs_;
-	error (yylloc, yysyntax_error_ (yystate]dnl
-b4_error_verbose_if([, yytoken])[));
+	if (yychar == yyempty_)
+	  yytoken = yyempty_;
+	error (yylloc, yysyntax_error_ (yystate, yytoken));
       }
 
-    yyerror_range[0] = yylloc;
+    yyerror_range[1] = yylloc;
     if (yyerrstatus_ == 3)
       {
 	/* If just tried and failed to reuse lookahead token after an
@@ -745,7 +773,7 @@ b4_error_verbose_if([, yytoken])[));
     if (false)
       goto yyerrorlab;
 
-    yyerror_range[0] = yylocation_stack_[yylen - 1];
+    yyerror_range[1] = yylocation_stack_[yylen - 1];
     /* Do not reclaim the symbols of the rule which action triggered
        this YYERROR.  */
     yypop_ (yylen);
@@ -762,7 +790,7 @@ b4_error_verbose_if([, yytoken])[));
     for (;;)
       {
 	yyn = yypact_[yystate];
-	if (yyn != yypact_ninf_)
+	if (!yy_pact_value_is_default_ (yyn))
 	{
 	  yyn += yyterror_;
 	  if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
@@ -777,7 +805,7 @@ b4_error_verbose_if([, yytoken])[));
 	if (yystate_stack_.height () == 1)
 	YYABORT;
 
-	yyerror_range[0] = yylocation_stack_[0];
+	yyerror_range[1] = yylocation_stack_[0];
 	yydestruct_ ("Error: popping",
 		     yystos_[yystate],
 		     &yysemantic_stack_[0], &yylocation_stack_[0]);
@@ -786,10 +814,10 @@ b4_error_verbose_if([, yytoken])[));
 	YY_STACK_PRINT ();
       }
 
-    yyerror_range[1] = yylloc;
+    yyerror_range[2] = yylloc;
     // Using YYLLOC is tempting, but would change the location of
     // the lookahead.  YYLOC is available though.
-    YYLLOC_DEFAULT (yyloc, (yyerror_range - 1), 2);
+    YYLLOC_DEFAULT (yyloc, yyerror_range, 2);
     yysemantic_stack_.push (yylval);
     yylocation_stack_.push (yyloc);
 
@@ -812,7 +840,13 @@ b4_error_verbose_if([, yytoken])[));
 
   yyreturn:
     if (yychar != yyempty_)
-      yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval, &yylloc);
+      {
+        /* Make sure we have latest lookahead translation.  See comments
+           at user semantic actions for why this is necessary.  */
+        yytoken = yytranslate_ (yychar);
+        yydestruct_ ("Cleanup: discarding lookahead", yytoken, &yylval,
+                     &yylloc);
+      }
 
     /* Do not reclaim the symbols of the rule which action triggered
        this YYABORT or YYACCEPT.  */
@@ -831,52 +865,100 @@ b4_error_verbose_if([, yytoken])[));
 
   // Generate an error message.
   std::string
-  ]b4_parser_class_name[::yysyntax_error_ (int yystate]dnl
-b4_error_verbose_if([, int tok])[)
-  {
-    std::string res;
-    YYUSE (yystate);
-#if YYERROR_VERBOSE
-    int yyn = yypact_[yystate];
-    if (yypact_ninf_ < yyn && yyn <= yylast_)
+  ]b4_parser_class_name[::yysyntax_error_ (]dnl
+b4_error_verbose_if([int yystate, int yytoken],
+                    [int, int])[)
+  {]b4_error_verbose_if([[
+    std::string yyres;
+    // Number of reported tokens (one for the "unexpected", one per
+    // "expected").
+    size_t yycount = 0;
+    // Its maximum.
+    enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+    // Arguments of yyformat.
+    char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+
+    /* There are many possibilities here to consider:
+       - If this state is a consistent state with a default action, then
+         the only way this function was invoked is if the default action
+         is an error action.  In that case, don't check for expected
+         tokens because there are none.
+       - The only way there can be no lookahead present (in yytoken) is
+         if this state is a consistent state with a default action.
+         Thus, detecting the absence of a lookahead is sufficient to
+         determine that there is no unexpected or expected token to
+         report.  In that case, just report a simple "syntax error".
+       - Don't assume there isn't a lookahead just because this state is
+         a consistent state with a default action.  There might have
+         been a previous inconsistent state, consistent state with a
+         non-default action, or user semantic action that manipulated
+         yychar.
+       - Of course, the expected token list depends on states to have
+         correct lookahead information, and it depends on the parser not
+         to perform extra reductions after fetching a lookahead from the
+         scanner and before detecting a syntax error.  Thus, state
+         merging (from LALR or IELR) and default reductions corrupt the
+         expected token list.  However, the list is correct for
+         canonical LR with one exception: it will still contain any
+         token that will not be accepted due to an error action in a
+         later state.
+    */
+    if (yytoken != yyempty_)
       {
-	/* Start YYX at -YYN if negative to avoid negative indexes in
-	   YYCHECK.  */
-	int yyxbegin = yyn < 0 ? -yyn : 0;
-
-	/* Stay within bounds of both yycheck and yytname.  */
-	int yychecklim = yylast_ - yyn + 1;
-	int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
-	int count = 0;
-	for (int x = yyxbegin; x < yyxend; ++x)
-	  if (yycheck_[x + yyn] == x && x != yyterror_)
-	    ++count;
-
-	// FIXME: This method of building the message is not compatible
-	// with internationalization.  It should work like yacc.c does it.
-	// That is, first build a string that looks like this:
-	// "syntax error, unexpected %s or %s or %s"
-	// Then, invoke YY_ on this string.
-	// Finally, use the string as a format to output
-	// yytname_[tok], etc.
-	// Until this gets fixed, this message appears in English only.
-	res = "syntax error, unexpected ";
-	res += yytnamerr_ (yytname_[tok]);
-	if (count < 5)
-	  {
-	    count = 0;
-	    for (int x = yyxbegin; x < yyxend; ++x)
-	      if (yycheck_[x + yyn] == x && x != yyterror_)
-		{
-		  res += (!count++) ? ", expecting " : " or ";
-		  res += yytnamerr_ (yytname_[x]);
-		}
-	  }
+        yyarg[yycount++] = yytname_[yytoken];
+        int yyn = yypact_[yystate];
+        if (!yy_pact_value_is_default_ (yyn))
+          {
+            /* Start YYX at -YYN if negative to avoid negative indexes in
+               YYCHECK.  In other words, skip the first -YYN actions for
+               this state because they are default actions.  */
+            int yyxbegin = yyn < 0 ? -yyn : 0;
+            /* Stay within bounds of both yycheck and yytname.  */
+            int yychecklim = yylast_ - yyn + 1;
+            int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+            for (int yyx = yyxbegin; yyx < yyxend; ++yyx)
+              if (yycheck_[yyx + yyn] == yyx && yyx != yyterror_
+                  && !yy_table_value_is_error_ (yytable_[yyx + yyn]))
+                {
+                  if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)
+                    {
+                      yycount = 1;
+                      break;
+                    }
+                  else
+                    yyarg[yycount++] = yytname_[yyx];
+                }
+          }
       }
-    else
-#endif
-      res = YY_("syntax error");
-    return res;
+
+    char const* yyformat = 0;
+    switch (yycount)
+      {
+#define YYCASE_(N, S)                         \
+        case N:                               \
+          yyformat = S;                       \
+        break
+        YYCASE_(0, YY_("syntax error"));
+        YYCASE_(1, YY_("syntax error, unexpected %s"));
+        YYCASE_(2, YY_("syntax error, unexpected %s, expecting %s"));
+        YYCASE_(3, YY_("syntax error, unexpected %s, expecting %s or %s"));
+        YYCASE_(4, YY_("syntax error, unexpected %s, expecting %s or %s or %s"));
+        YYCASE_(5, YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"));
+#undef YYCASE_
+      }
+
+    // Argument number.
+    size_t yyi = 0;
+    for (char const* yyp = yyformat; *yyp; ++yyp)
+      if (yyp[0] == '%' && yyp[1] == 's' && yyi < yycount)
+        {
+          yyres += yytnamerr_ (yyarg[yyi++]);
+          ++yyp;
+        }
+      else
+        yyres += *yyp;
+    return yyres;]], [[
+    return YY_("syntax error");]])[
   }
 
 
@@ -889,9 +971,9 @@ b4_error_verbose_if([, int tok])[)
     ]b4_pact[
   };
 
-  /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-     doesn't specify something else to do.  Zero means the default is an
-     error.  */
+  /* YYDEFACT[S] -- default reduction number in state S.  Performed when
+     YYTABLE doesn't specify something else to do.  Zero means the
+     default is an error.  */
   const ]b4_int_type_for([b4_defact])[
   ]b4_parser_class_name[::yydefact_[] =
   {
@@ -914,7 +996,7 @@ b4_error_verbose_if([, int tok])[)
 
   /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
      positive, shift that token.  If negative, reduce the rule which
-     number is the opposite.  If zero, do what YYDEFACT says.  */
+     number is the opposite.  If YYTABLE_NINF_, syntax error.  */
   const ]b4_int_type(b4_table_ninf, b4_table_ninf) b4_parser_class_name::yytable_ninf_ = b4_table_ninf[;
   const ]b4_int_type_for([b4_table])[
   ]b4_parser_class_name[::yytable_[] =
@@ -1055,9 +1137,9 @@ b4_error_verbose_if([, int tok])[)
 
 ]b4_epilogue
 dnl
-@output(b4_dir_prefix[]stack.hh@)
+@output(b4_dir_prefix[]stack.hh@)@
 b4_copyright([Stack handling for Bison parsers in C++],
-             [2002, 2003, 2004, 2005, 2006, 2007, 2008])[
+             [2002-2011])[
 
 #ifndef BISON_STACK_HH
 # define BISON_STACK_HH

data/lalr1.java

@@ -1,6 +1,6 @@
 # Java skeleton for Bison -*- autoconf -*-
 
-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2011 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
@@ -23,9 +23,9 @@ m4_ifval(m4_defn([b4_symbol_destructors]),
         [])
 
 m4_divert_push(0)dnl
-@output(b4_parser_file_name@)
+@output(b4_parser_file_name@)@
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
-  [2007, 2008])
+             [2007-2011])
 
 b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);
 ])[/* First part of user declarations.  */
@@ -102,7 +102,7 @@ b4_token_enums(b4_tokens)
   private ]b4_location_type[ yylloc (YYStack rhs, int n)
   {
     if (n > 0)
-      return new ]b4_location_type[ (rhs.locationAt (1).begin, rhs.locationAt (n).end);
+      return new ]b4_location_type[ (rhs.locationAt (n-1).begin, rhs.locationAt (0).end);
     else
       return new ]b4_location_type[ (rhs.locationAt (0).end);
   }]])[
@@ -130,7 +130,7 @@ b4_token_enums(b4_tokens)
     /**
      * Entry point for the scanner.  Returns the token identifier corresponding
      * to the next token and prepares to return the semantic value
-     * ]b4_locations_if([and beginning/ending positions ])[of the token. 
+     * ]b4_locations_if([and beginning/ending positions ])[of the token.
      * @@return the token identifier corresponding to the next token. */
     int yylex () ]b4_maybe_throws([b4_lex_throws])[;
 
@@ -228,11 +228,11 @@ b4_lexer_if([[
 
     public int size = 16;
     public int height = -1;
-    
+
     public final void push (int state, ]b4_yystype[ value]dnl
-    	   	      	    b4_locations_if([, ]b4_location_type[ loc])[) {
+			    b4_locations_if([, ]b4_location_type[ loc])[) {
       height++;
-      if (size == height) 
+      if (size == height)
         {
 	  int[] newStateStack = new int[size * 2];
 	  System.arraycopy (stateStack, 0, newStateStack, 0, height);
@@ -241,7 +241,7 @@ b4_lexer_if([[
 	  ]b4_location_type[[] newLocStack = new ]b4_location_type[[size * 2];
 	  System.arraycopy (locStack, 0, newLocStack, 0, height);
 	  locStack = newLocStack;]])
-	  
+
 	  b4_yystype[[] newValueStack = new ]b4_yystype[[size * 2];
 	  System.arraycopy (valueStack, 0, newValueStack, 0, height);
 	  valueStack = newValueStack;
@@ -255,14 +255,14 @@ b4_lexer_if([[
     }
 
     public final void pop () {
-      height--;
+      pop (1);
     }
 
     public final void pop (int num) {
       // Avoid memory leaks... garbage collection is a white lie!
       if (num > 0) {
-	java.util.Arrays.fill (valueStack, height - num + 1, height, null);
-        ]b4_locations_if([[java.util.Arrays.fill (locStack, height - num + 1, height, null);]])[
+	java.util.Arrays.fill (valueStack, height - num + 1, height + 1, null);
+        ]b4_locations_if([[java.util.Arrays.fill (locStack, height - num + 1, height + 1, null);]])[
       }
       height -= num;
     }
@@ -283,8 +283,8 @@ b4_lexer_if([[
     public void print (java.io.PrintStream out)
     {
       out.print ("Stack now");
-      
-      for (int i = 0; i < height; i++)
+
+      for (int i = 0; i <= height; i++)
         {
 	  out.print (' ');
 	  out.print (stateStack[i]);
@@ -308,11 +308,9 @@ b4_lexer_if([[
    * printing an error message.  */
   public static final int YYERROR = 2;
 
-  /**
-   * Returned by a Bison action in order to print an error message and start
-   * error recovery.  */
-  public static final int YYFAIL = 3;
-
+  // Internal return codes that are not supported for user semantic
+  // actions.
+  private static final int YYERRLAB = 3;
   private static final int YYNEWSTATE = 4;
   private static final int YYDEFAULT = 5;
   private static final int YYREDUCE = 6;
@@ -337,7 +335,7 @@ b4_lexer_if([[
 
     /* If YYLEN is nonzero, implement the default value of the action:
        `$$ = $1'.  Otherwise, use the top of the stack.
-    
+
        Otherwise, the following line sets YYVAL to garbage.
        This behavior is undocumented and Bison
        users should not rely upon it.  */
@@ -345,7 +343,7 @@ b4_lexer_if([[
       yyval = yystack.valueAt (yylen - 1);
     else
       yyval = yystack.valueAt (0);
-    
+
     yy_reduce_print (yyn, yystack);
 
     switch (yyn)
@@ -482,19 +480,19 @@ m4_popdef([b4_at_dollar])])dnl
         yycdebug ("Entering state " + yystate + "\n");
         if (yydebug > 0)
           yystack.print (yyDebugStream);
-    
+
         /* Accept?  */
         if (yystate == yyfinal_)
           return true;
-    
+
         /* Take a decision.  First try without lookahead.  */
         yyn = yypact_[yystate];
-        if (yyn == yypact_ninf_)
+        if (yy_pact_value_is_default_ (yyn))
           {
             label = YYDEFAULT;
 	    break;
           }
-    
+
         /* Read a lookahead token.  */
         if (yychar == yyempty_)
           {
@@ -502,10 +500,10 @@ m4_popdef([b4_at_dollar])])dnl
 	    yychar = yylex ();]
             b4_locations_if([[
 	    yylloc = new ]b4_location_type[(yylexer.getStartPos (),
-	    		   	            yylexer.getEndPos ());]])
+				            yylexer.getEndPos ());]])
             yylval = yylexer.getLVal ();[
           }
-    
+
         /* Convert token to internal form.  */
         if (yychar <= EOF)
           {
@@ -516,58 +514,58 @@ m4_popdef([b4_at_dollar])])dnl
           {
 	    yytoken = yytranslate_ (yychar);
 	    yy_symbol_print ("Next token is", yytoken,
-	    		     yylval]b4_locations_if([, yylloc])[);
+			     yylval]b4_locations_if([, yylloc])[);
           }
-    
+
         /* If the proper action on seeing token YYTOKEN is to reduce or to
            detect an error, take that action.  */
         yyn += yytoken;
         if (yyn < 0 || yylast_ < yyn || yycheck_[yyn] != yytoken)
           label = YYDEFAULT;
-    
+
         /* <= 0 means reduce or error.  */
         else if ((yyn = yytable_[yyn]) <= 0)
           {
-	    if (yyn == 0 || yyn == yytable_ninf_)
-	      label = YYFAIL;
+	    if (yy_table_value_is_error_ (yyn))
+	      label = YYERRLAB;
 	    else
 	      {
 	        yyn = -yyn;
 	        label = YYREDUCE;
 	      }
           }
-    
+
         else
           {
             /* Shift the lookahead token.  */
 	    yy_symbol_print ("Shifting", yytoken,
-	    		     yylval]b4_locations_if([, yylloc])[);
-    
+			     yylval]b4_locations_if([, yylloc])[);
+
             /* Discard the token being shifted.  */
             yychar = yyempty_;
-    
+
             /* Count tokens shifted since error; after three, turn off error
                status.  */
             if (yyerrstatus_ > 0)
               --yyerrstatus_;
-    
+
             yystate = yyn;
             yystack.push (yystate, yylval]b4_locations_if([, yylloc])[);
             label = YYNEWSTATE;
           }
         break;
-    
+
       /*-----------------------------------------------------------.
       | yydefault -- do the default action for the current state.  |
       `-----------------------------------------------------------*/
       case YYDEFAULT:
         yyn = yydefact_[yystate];
         if (yyn == 0)
-          label = YYFAIL;
+          label = YYERRLAB;
         else
           label = YYREDUCE;
         break;
-    
+
       /*-----------------------------.
       | yyreduce -- Do a reduction.  |
       `-----------------------------*/
@@ -576,24 +574,26 @@ m4_popdef([b4_at_dollar])])dnl
         label = yyaction (yyn, yystack, yylen);
 	yystate = yystack.stateAt (0);
         break;
-    
+
       /*------------------------------------.
       | yyerrlab -- here on detecting error |
       `------------------------------------*/
-      case YYFAIL:
+      case YYERRLAB:
         /* If not already recovering from an error, report this error.  */
         if (yyerrstatus_ == 0)
           {
-	    ++yynerrs_;
-	    yyerror (]b4_locations_if([yylloc, ])[yysyntax_error (yystate, yytoken));
+            ++yynerrs_;
+            if (yychar == yyempty_)
+              yytoken = yyempty_;
+            yyerror (]b4_locations_if([yylloc, ])[yysyntax_error (yystate, yytoken));
           }
-    
+
         ]b4_locations_if([yyerrloc = yylloc;])[
         if (yyerrstatus_ == 3)
           {
 	    /* If just tried and failed to reuse lookahead token after an
 	     error, discard it.  */
-    
+
 	    if (yychar <= EOF)
 	      {
 	      /* Return failure if at end of input.  */
@@ -603,17 +603,17 @@ m4_popdef([b4_at_dollar])])dnl
 	    else
 	      yychar = yyempty_;
           }
-    
+
         /* Else will try to reuse lookahead token after shifting the error
            token.  */
         label = YYERRLAB1;
         break;
-    
+
       /*---------------------------------------------------.
       | errorlab -- error raised explicitly by YYERROR.  |
       `---------------------------------------------------*/
       case YYERROR:
-    
+
         ]b4_locations_if([yyerrloc = yystack.locationAt (yylen - 1);])[
         /* Do not reclaim the symbols of the rule which action triggered
            this YYERROR.  */
@@ -622,17 +622,17 @@ m4_popdef([b4_at_dollar])])dnl
         yystate = yystack.stateAt (0);
         label = YYERRLAB1;
         break;
-    
+
       /*-------------------------------------------------------------.
       | yyerrlab1 -- common code for both syntax error and YYERROR.  |
       `-------------------------------------------------------------*/
       case YYERRLAB1:
         yyerrstatus_ = 3;	/* Each real token shifted decrements this.  */
-    
+
         for (;;)
           {
 	    yyn = yypact_[yystate];
-	    if (yyn != yypact_ninf_)
+	    if (!yy_pact_value_is_default_ (yyn))
 	      {
 	        yyn += yyterror_;
 	        if (0 <= yyn && yyn <= yylast_ && yycheck_[yyn] == yyterror_)
@@ -642,18 +642,18 @@ m4_popdef([b4_at_dollar])])dnl
 		      break;
 	          }
 	      }
-    
+
 	    /* Pop the current state because it cannot handle the error token.  */
 	    if (yystack.height == 1)
 	      return false;
-    
+
 	    ]b4_locations_if([yyerrloc = yystack.locationAt (0);])[
 	    yystack.pop ();
 	    yystate = yystack.stateAt (0);
 	    if (yydebug > 0)
 	      yystack.print (yyDebugStream);
           }
-    
+
 	]b4_locations_if([
 	/* Muck with the stack to setup for yylloc.  */
 	yystack.push (0, null, yylloc);
@@ -664,16 +664,16 @@ m4_popdef([b4_at_dollar])])dnl
         /* Shift the error token.  */
         yy_symbol_print ("Shifting", yystos_[yyn],
 			 yylval]b4_locations_if([, yyloc])[);
-    
+
         yystate = yyn;
 	yystack.push (yyn, yylval]b4_locations_if([, yyloc])[);
         label = YYNEWSTATE;
         break;
-    
+
         /* Accept.  */
       case YYACCEPT:
         return true;
-    
+
         /* Abort.  */
       case YYABORT:
         return false;
@@ -685,44 +685,96 @@ m4_popdef([b4_at_dollar])])dnl
   {
     if (errorVerbose)
       {
-        int yyn = yypact_[yystate];
-        if (yypact_ninf_ < yyn && yyn <= yylast_)
+        /* There are many possibilities here to consider:
+           - Assume YYFAIL is not used.  It's too flawed to consider.
+             See
+             <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
+             for details.  YYERROR is fine as it does not invoke this
+             function.
+           - If this state is a consistent state with a default action,
+             then the only way this function was invoked is if the
+             default action is an error action.  In that case, don't
+             check for expected tokens because there are none.
+           - The only way there can be no lookahead present (in tok) is
+             if this state is a consistent state with a default action.
+             Thus, detecting the absence of a lookahead is sufficient to
+             determine that there is no unexpected or expected token to
+             report.  In that case, just report a simple "syntax error".
+           - Don't assume there isn't a lookahead just because this
+             state is a consistent state with a default action.  There
+             might have been a previous inconsistent state, consistent
+             state with a non-default action, or user semantic action
+             that manipulated yychar.  (However, yychar is currently out
+             of scope during semantic actions.)
+           - Of course, the expected token list depends on states to
+             have correct lookahead information, and it depends on the
+             parser not to perform extra reductions after fetching a
+             lookahead from the scanner and before detecting a syntax
+             error.  Thus, state merging (from LALR or IELR) and default
+             reductions corrupt the expected token list.  However, the
+             list is correct for canonical LR with one exception: it
+             will still contain any token that will not be accepted due
+             to an error action in a later state.
+        */
+        if (tok != yyempty_)
           {
-	    StringBuffer res;
-
-	    /* Start YYX at -YYN if negative to avoid negative indexes in
-	       YYCHECK.  */
-	    int yyxbegin = yyn < 0 ? -yyn : 0;
-
-	    /* Stay within bounds of both yycheck and yytname.  */
-	    int yychecklim = yylast_ - yyn + 1;
-	    int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
-	    int count = 0;
-	    for (int x = yyxbegin; x < yyxend; ++x)
-	      if (yycheck_[x + yyn] == x && x != yyterror_)
-	        ++count;
-
-	    // FIXME: This method of building the message is not compatible
-	    // with internationalization.
-	    res = new StringBuffer ("syntax error, unexpected ");
-	    res.append (yytnamerr_ (yytname_[tok]));
-	    if (count < 5)
-	      {
-	        count = 0;
-	        for (int x = yyxbegin; x < yyxend; ++x)
-	          if (yycheck_[x + yyn] == x && x != yyterror_)
-		    {
-		      res.append (count++ == 0 ? ", expecting " : " or ");
-		      res.append (yytnamerr_ (yytname_[x]));
-		    }
-	      }
-	    return res.toString ();
+            // FIXME: This method of building the message is not compatible
+            // with internationalization.
+            StringBuffer res =
+              new StringBuffer ("syntax error, unexpected ");
+            res.append (yytnamerr_ (yytname_[tok]));
+            int yyn = yypact_[yystate];
+            if (!yy_pact_value_is_default_ (yyn))
+              {
+                /* Start YYX at -YYN if negative to avoid negative
+                   indexes in YYCHECK.  In other words, skip the first
+                   -YYN actions for this state because they are default
+                   actions.  */
+                int yyxbegin = yyn < 0 ? -yyn : 0;
+                /* Stay within bounds of both yycheck and yytname.  */
+                int yychecklim = yylast_ - yyn + 1;
+                int yyxend = yychecklim < yyntokens_ ? yychecklim : yyntokens_;
+                int count = 0;
+                for (int x = yyxbegin; x < yyxend; ++x)
+                  if (yycheck_[x + yyn] == x && x != yyterror_
+                      && !yy_table_value_is_error_ (yytable_[x + yyn]))
+                    ++count;
+                if (count < 5)
+                  {
+                    count = 0;
+                    for (int x = yyxbegin; x < yyxend; ++x)
+                      if (yycheck_[x + yyn] == x && x != yyterror_
+                          && !yy_table_value_is_error_ (yytable_[x + yyn]))
+                        {
+                          res.append (count++ == 0 ? ", expecting " : " or ");
+                          res.append (yytnamerr_ (yytname_[x]));
+                        }
+                  }
+              }
+            return res.toString ();
           }
       }
 
     return "syntax error";
   }
 
+  /**
+   * Whether the given <code>yypact_</code> value indicates a defaulted state.
+   * @@param yyvalue   the value to check
+   */
+  private static boolean yy_pact_value_is_default_ (int yyvalue)
+  {
+    return yyvalue == yypact_ninf_;
+  }
+
+  /**
+   * Whether the given <code>yytable_</code> value indicates a syntax error.
+   * @@param yyvalue   the value to check
+   */
+  private static boolean yy_table_value_is_error_ (int yyvalue)
+  {
+    return yyvalue == yytable_ninf_;
+  }
 
   /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
      STATE-NUM.  */
@@ -732,9 +784,9 @@ m4_popdef([b4_at_dollar])])dnl
     ]b4_pact[
   };
 
-  /* YYDEFACT[S] -- default rule to reduce with in state S when YYTABLE
-     doesn't specify something else to do.  Zero means the default is an
-     error.  */
+  /* YYDEFACT[S] -- default reduction number in state S.  Performed when
+     YYTABLE doesn't specify something else to do.  Zero means the
+     default is an error.  */
   private static final ]b4_int_type_for([b4_defact])[ yydefact_[] =
   {
     ]b4_defact[
@@ -755,7 +807,7 @@ m4_popdef([b4_at_dollar])])dnl
 
   /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
      positive, shift that token.  If negative, reduce the rule which
-     number is the opposite.  If zero, do what YYDEFACT says.  */
+     number is the opposite.  If YYTABLE_NINF_, syntax error.  */
   private static final ]b4_int_type_for([b4_table])[ yytable_ninf_ = ]b4_table_ninf[;
   private static final ]b4_int_type_for([b4_table])[
   yytable_[] =
@@ -842,7 +894,7 @@ m4_popdef([b4_at_dollar])])dnl
     for (int yyi = 0; yyi < yynrhs; yyi++)
       yy_symbol_print ("   $" + (yyi + 1) + " =",
 		       yyrhs_[yyprhs_[yyrule] + yyi],
-		       ]b4_rhs_value(yynrhs, yyi + 1)b4_locations_if([, 
+		       ]b4_rhs_value(yynrhs, yyi + 1)b4_locations_if([,
 		       b4_rhs_location(yynrhs, yyi + 1)])[);
   }
 

data/location.cc

@@ -1,7 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation,
-# Inc.
+# Copyright (C) 2002-2007, 2009-2011 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
@@ -19,9 +18,9 @@
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert_push(0)dnl
-@output(b4_dir_prefix[]position.hh@)
+@output(b4_dir_prefix[]position.hh@)@
 b4_copyright([Positions for Bison parsers in C++],
-  [2002, 2003, 2004, 2005, 2006])[
+             [2002-2007, 2009-2011])[
 
 /**
  ** \file position.hh
@@ -116,10 +115,11 @@ b4_copyright([Positions for Bison parsers in C++],
   inline bool
   operator== (const position& pos1, const position& pos2)
   {
-    return
-      (pos1.filename == pos2.filename
-       || pos1.filename && pos2.filename && *pos1.filename == *pos2.filename)
-      && pos1.line == pos2.line && pos1.column == pos2.column;
+    return (pos1.line == pos2.line
+            && pos1.column == pos2.column
+            && (pos1.filename == pos2.filename
+                || (pos1.filename && pos2.filename
+                    && *pos1.filename == *pos2.filename)));
   }
 
   /// Compare two position objects.
@@ -143,9 +143,9 @@ b4_copyright([Positions for Bison parsers in C++],
 
 ]b4_namespace_close[
 #endif // not BISON_POSITION_HH]
-@output(b4_dir_prefix[]location.hh@)
+@output(b4_dir_prefix[]location.hh@)@
 b4_copyright([Locations for Bison parsers in C++],
-  [2002, 2003, 2004, 2005, 2006])[
+             [2002-2007, 2009-2011])[
 
 /**
  ** \file location.hh

data/m4sugar/foreach.m4

@@ -1,400 +0,0 @@
-#                                                  -*- Autoconf -*-
-# This file is part of Autoconf.
-# foreach-based replacements for recursive functions.
-# Speeds up GNU M4 1.4.x by avoiding quadratic $@ recursion, but penalizes
-# GNU M4 1.6 by requiring more memory and macro expansions.
-#
-# Copyright (C) 2008 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
-# 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/>.
-
-# As a special exception, the Free Software Foundation gives unlimited
-# permission to copy, distribute and modify the configure scripts that
-# are the output of Autoconf.  You need not follow the terms of the GNU
-# General Public License when using or distributing such scripts, even
-# though portions of the text of Autoconf appear in them.  The GNU
-# General Public License (GPL) does govern all other use of the material
-# that constitutes the Autoconf program.
-#
-# Certain portions of the Autoconf source text are designed to be copied
-# (in certain cases, depending on the input) into the output of
-# Autoconf.  We call these the "data" portions.  The rest of the Autoconf
-# source text consists of comments plus executable code that decides which
-# of the data portions to output in any given case.  We call these
-# comments and executable code the "non-data" portions.  Autoconf never
-# copies any of the non-data portions into its output.
-#
-# This special exception to the GPL applies to versions of Autoconf
-# released by the Free Software Foundation.  When you make and
-# distribute a modified version of Autoconf, you may extend this special
-# exception to the GPL to apply to your modified version as well, *unless*
-# your modified version has the potential to copy into its output some
-# of the text that was the non-data portion of the version that you started
-# with.  (In other words, unless your change moves or copies text from
-# the non-data portions to the data portions.)  If your modification has
-# such potential, you must delete any notice of this special exception
-# to the GPL from your modified version.
-#
-# Written by Eric Blake.
-#
-
-# In M4 1.4.x, every byte of $@ is rescanned.  This means that an
-# algorithm on n arguments that recurses with one less argument each
-# iteration will scan n * (n + 1) / 2 arguments, for O(n^2) time.  In
-# M4 1.6, this was fixed so that $@ is only scanned once, then
-# back-references are made to information stored about the scan.
-# Thus, n iterations need only scan n arguments, for O(n) time.
-# Additionally, in M4 1.4.x, recursive algorithms did not clean up
-# memory very well, requiring O(n^2) memory rather than O(n) for n
-# iterations.
-#
-# This file is designed to overcome the quadratic nature of $@
-# recursion by writing a variant of m4_foreach that uses m4_for rather
-# than $@ recursion to operate on the list.  This involves more macro
-# expansions, but avoids the need to rescan a quadratic number of
-# arguments, making these replacements very attractive for M4 1.4.x.
-# On the other hand, in any version of M4, expanding additional macros
-# costs additional time; therefore, in M4 1.6, where $@ recursion uses
-# fewer macros, these replacements actually pessimize performance.
-# Additionally, the use of $10 to mean the tenth argument violates
-# POSIX; although all versions of m4 1.4.x support this meaning, a
-# future m4 version may switch to take it as the first argument
-# concatenated with a literal 0, so the implementations in this file
-# are not future-proof.  Thus, this file is conditionally included as
-# part of m4_init(), only when it is detected that M4 probably has
-# quadratic behavior (ie. it lacks the macro __m4_version__).
-#
-# Please keep this file in sync with m4sugar.m4.
-
-# m4_foreach(VARIABLE, LIST, EXPRESSION)
-# --------------------------------------
-# Expand EXPRESSION assigning each value of the LIST to VARIABLE.
-# LIST should have the form `item_1, item_2, ..., item_n', i.e. the
-# whole list must *quoted*.  Quote members too if you don't want them
-# to be expanded.
-#
-# This version minimizes the number of times that $@ is evaluated by
-# using m4_for to generate a boilerplate into VARIABLE then passing $@
-# to that temporary macro.  Thus, the recursion is done in m4_for
-# without reparsing any user input, and is not quadratic.  For an idea
-# of how this works, note that m4_foreach(i,[1,2],[i]) defines i to be
-#   m4_define([$1],[$3])$2[]m4_define([$1],[$4])$2[]m4_popdef([i])
-# then calls i([i],[i],[1],[2]).
-m4_define([m4_foreach],
-[m4_if([$2], [], [], [_$0([$1], [$3], $2)])])
-
-m4_define([_m4_foreach],
-[m4_define([$1], m4_pushdef([$1])_m4_for([$1], [3], [$#], [1],
-    [$0_([1], [2], _m4_defn([$1]))])[m4_popdef([$1])])m4_indir([$1], $@)])
-
-m4_define([_m4_foreach_],
-[[m4_define([$$1], [$$3])$$2[]]])
-
-# m4_case(SWITCH, VAL1, IF-VAL1, VAL2, IF-VAL2, ..., DEFAULT)
-# -----------------------------------------------------------
-# Find the first VAL that SWITCH matches, and expand the corresponding
-# IF-VAL.  If there are no matches, expand DEFAULT.
-#
-# Use m4_for to create a temporary macro in terms of a boilerplate
-# m4_if with final cleanup.  If $# is even, we have DEFAULT; if it is
-# odd, then rounding the last $# up in the temporary macro is
-# harmless.  For example, both m4_case(1,2,3,4,5) and
-# m4_case(1,2,3,4,5,6) result in the intermediate _m4_case being
-#   m4_if([$1],[$2],[$3],[$1],[$4],[$5],_m4_popdef([_m4_case])[$6])
-m4_define([m4_case],
-[m4_if(m4_eval([$# <= 2]), [1], [$2],
-[m4_pushdef([_$0], [m4_if(]m4_for([_m4_count], [2], m4_decr([$#]), [2],
-     [_$0_([1], _m4_count, m4_incr(_m4_count))])[_m4_popdef(
-	 [_$0])]m4_dquote($m4_eval([($# + 1) & ~1]))[)])_$0($@)])])
-
-m4_define([_m4_case_],
-[[[$$1],[$$2],[$$3],]])
-
-# m4_bmatch(SWITCH, RE1, VAL1, RE2, VAL2, ..., DEFAULT)
-# -----------------------------------------------------
-# m4 equivalent of
-#
-# if (SWITCH =~ RE1)
-#   VAL1;
-# elif (SWITCH =~ RE2)
-#   VAL2;
-# elif ...
-#   ...
-# else
-#   DEFAULT
-#
-# We build the temporary macro _m4_b:
-#   m4_define([_m4_b], _m4_defn([_m4_bmatch]))_m4_b([$1], [$2], [$3])...
-#   _m4_b([$1], [$m-1], [$m])_m4_b([], [], [$m+1]_m4_popdef([_m4_b]))
-# then invoke m4_unquote(_m4_b($@)), for concatenation with later text.
-m4_define([m4_bmatch],
-[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
-       [$#], 1, [m4_fatal([$0: too few arguments: $#: $1])],
-       [$#], 2, [$2],
-       [m4_define([_m4_b], m4_pushdef([_m4_b])[m4_define([_m4_b],
-  _m4_defn([_$0]))]_m4_for([_m4_b], [3], m4_eval([($# + 1) / 2 * 2 - 1]),
-  [2], [_$0_([1], m4_decr(_m4_b), _m4_b)])[_m4_b([], [],]m4_dquote(
-  [$]m4_incr(_m4_b))[_m4_popdef([_m4_b]))])m4_unquote(_m4_b($@))])])
-
-m4_define([_m4_bmatch],
-[m4_if(m4_bregexp([$1], [$2]), [-1], [], [[$3]m4_define([$0])])])
-
-m4_define([_m4_bmatch_],
-[[_m4_b([$$1], [$$2], [$$3])]])
-
-
-# m4_cond(TEST1, VAL1, IF-VAL1, TEST2, VAL2, IF-VAL2, ..., [DEFAULT])
-# -------------------------------------------------------------------
-# Similar to m4_if, except that each TEST is expanded when encountered.
-# If the expansion of TESTn matches the string VALn, the result is IF-VALn.
-# The result is DEFAULT if no tests passed.  This macro allows
-# short-circuiting of expensive tests, where it pays to arrange quick
-# filter tests to run first.
-#
-# m4_cond already guarantees either 3*n or 3*n + 1 arguments, 1 <= n.
-# We only have to speed up _m4_cond, by building the temporary _m4_c:
-#   m4_define([_m4_c], _m4_defn([m4_unquote]))_m4_c([m4_if(($1), [($2)],
-#   [[$3]m4_define([_m4_c])])])_m4_c([m4_if(($4), [($5)],
-#   [[$6]m4_define([_m4_c])])])..._m4_c([m4_if(($m-2), [($m-1)],
-#   [[$m]m4_define([_m4_c])])])_m4_c([[$m+1]]_m4_popdef([_m4_c]))
-# We invoke m4_unquote(_m4_c($@)), for concatenation with later text.
-m4_define([_m4_cond],
-[m4_define([_m4_c], m4_pushdef([_m4_c])[m4_define([_m4_c],
-  _m4_defn([m4_unquote]))]_m4_for([_m4_c], [2], m4_eval([$# / 3 * 3 - 1]), [3],
-  [$0_(m4_decr(_m4_c), _m4_c, m4_incr(_m4_c))])[_m4_c(]m4_dquote(m4_dquote(
-  [$]m4_eval([$# / 3 * 3 + 1])))[_m4_popdef([_m4_c]))])m4_unquote(_m4_c($@))])
-
-m4_define([_m4_cond_],
-[[_m4_c([m4_if(($$1), [($$2)], [[$$3]m4_define([_m4_c])])])]])
-
-# m4_bpatsubsts(STRING, RE1, SUBST1, RE2, SUBST2, ...)
-# ----------------------------------------------------
-# m4 equivalent of
-#
-#   $_ = STRING;
-#   s/RE1/SUBST1/g;
-#   s/RE2/SUBST2/g;
-#   ...
-#
-# m4_bpatsubsts already validated an odd number of arguments; we only
-# need to speed up _m4_bpatsubsts.  To avoid nesting, we build the
-# temporary _m4_p:
-#   m4_define([_m4_p], [$1])m4_define([_m4_p],
-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$2], [$3]))m4_define([_m4_p],
-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$4], [$5]))m4_define([_m4_p],...
-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$m-1], [$m]))m4_unquote(
-#   _m4_defn([_m4_p])_m4_popdef([_m4_p]))
-m4_define([_m4_bpatsubsts],
-[m4_define([_m4_p], m4_pushdef([_m4_p])[m4_define([_m4_p],
-  ]m4_dquote([$]1)[)]_m4_for([_m4_p], [3], [$#], [2], [$0_(m4_decr(_m4_p),
-  _m4_p)])[m4_unquote(_m4_defn([_m4_p])_m4_popdef([_m4_p]))])_m4_p($@)])
-
-m4_define([_m4_bpatsubsts_],
-[[m4_define([_m4_p],
-m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$$1], [$$2]))]])
-
-# m4_shiftn(N, ...)
-# -----------------
-# Returns ... shifted N times.  Useful for recursive "varargs" constructs.
-#
-# m4_shiftn already validated arguments; we only need to speed up
-# _m4_shiftn.  If N is 3, then we build the temporary _m4_s, defined as
-#   ,[$5],[$6],...,[$m]_m4_popdef([_m4_s])
-# before calling m4_shift(_m4_s($@)).
-m4_define([_m4_shiftn],
-[m4_if(m4_incr([$1]), [$#], [], [m4_define([_m4_s],
-	   m4_pushdef([_m4_s])_m4_for([_m4_s], m4_eval([$1 + 2]), [$#], [1],
-  [[,]m4_dquote([$]_m4_s)])[_m4_popdef([_m4_s])])m4_shift(_m4_s($@))])])
-
-# m4_do(STRING, ...)
-# ------------------
-# This macro invokes all its arguments (in sequence, of course).  It is
-# useful for making your macros more structured and readable by dropping
-# unnecessary dnl's and have the macros indented properly.
-#
-# Here, we use the temporary macro _m4_do, defined as
-#   $1[]$2[]...[]$n[]_m4_popdef([_m4_do])
-m4_define([m4_do],
-[m4_if([$#], [0], [],
-       [m4_define([_$0], m4_pushdef([_$0])_m4_for([_$0], [1], [$#], [1],
-		  [$_$0[[]]])[_m4_popdef([_$0])])_$0($@)])])
-
-# m4_dquote_elt(ARGS)
-# -------------------
-# Return ARGS as an unquoted list of double-quoted arguments.
-#
-# m4_foreach to the rescue.  It's easier to shift off the leading comma.
-m4_define([m4_dquote_elt],
-[m4_shift(m4_foreach([_m4_elt], [$@], [,m4_dquote(_m4_defn([_m4_elt]))]))])
-
-# m4_reverse(ARGS)
-# ----------------
-# Output ARGS in reverse order.
-#
-# Invoke _m4_r($@) with the temporary _m4_r built as
-#   [$m], [$m-1], ..., [$2], [$1]_m4_popdef([_m4_r])
-m4_define([m4_reverse],
-[m4_if([$#], [0], [], [$#], [1], [[$1]],
-[m4_define([_m4_r], m4_dquote([$$#])m4_pushdef([_m4_r])_m4_for([_m4_r],
-      m4_decr([$#]), [1], [-1],
-    [[, ]m4_dquote([$]_m4_r)])[_m4_popdef([_m4_r])])_m4_r($@)])])
-
-
-# m4_map(MACRO, LIST)
-# -------------------
-# Invoke MACRO($1), MACRO($2) etc. where $1, $2... are the elements
-# of LIST.  $1, $2... must in turn be lists, appropriate for m4_apply.
-#
-# m4_map/m4_map_sep only execute once; the speedup comes in fixing
-# _m4_map.  The mismatch in () is intentional, since $1 supplies the
-# opening `(' (but it sure looks odd!).  Build the temporary _m4_m:
-#   $1, [$3])$1, [$4])...$1, [$m])_m4_popdef([_m4_m])
-m4_define([_m4_map],
-[m4_if([$#], [2], [],
-       [m4_define([_m4_m], m4_pushdef([_m4_m])_m4_for([_m4_m], [3], [$#], [1],
-   [$0_([1], _m4_m)])[_m4_popdef([_m4_m])])_m4_m($@)])])
-
-m4_define([_m4_map_],
-[[$$1, [$$2])]])
-
-# m4_transform(EXPRESSION, ARG...)
-# --------------------------------
-# Expand EXPRESSION([ARG]) for each argument.  More efficient than
-# m4_foreach([var], [ARG...], [EXPRESSION(m4_defn([var]))])
-#
-# Invoke the temporary macro _m4_transform, defined as:
-#   $1([$2])[]$1([$3])[]...$1([$m])[]_m4_popdef([_m4_transform])
-m4_define([m4_transform],
-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
-       [$#], [1], [],
-       [m4_define([_$0], m4_pushdef([_$0])_m4_for([_$0], [2], [$#], [1],
-   [_$0_([1], _$0)])[_m4_popdef([_$0])])_$0($@)])])
-
-m4_define([_m4_transform_],
-[[$$1([$$2])[]]])
-
-# m4_transform_pair(EXPRESSION, [END-EXPR = EXPRESSION], ARG...)
-# --------------------------------------------------------------
-# Perform a pairwise grouping of consecutive ARGs, by expanding
-# EXPRESSION([ARG1], [ARG2]).  If there are an odd number of ARGs, the
-# final argument is expanded with END-EXPR([ARGn]).
-#
-# Build the temporary macro _m4_transform_pair, with the $2([$m+1])
-# only output if $# is odd:
-#   $1([$3], [$4])[]$1([$5], [$6])[]...$1([$m-1],
-#   [$m])[]m4_default([$2], [$1])([$m+1])[]_m4_popdef([_m4_transform_pair])
-m4_define([m4_transform_pair],
-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
-       [$#], [1], [m4_fatal([$0: too few arguments: $#: $1])],
-       [$#], [2], [],
-       [$#], [3], [m4_default([$2], [$1])([$3])[]],
-       [m4_define([_$0], m4_pushdef([_$0])_m4_for([_$0], [3],
-   m4_eval([$# / 2 * 2 - 1]), [2], [_$0_([1], _$0, m4_incr(_$0))])_$0_end(
-   [1], [2], [$#])[_m4_popdef([_$0])])_$0($@)])])
-
-m4_define([_m4_transform_pair_],
-[[$$1([$$2], [$$3])[]]])
-
-m4_define([_m4_transform_pair_end],
-[m4_if(m4_eval([$3 & 1]), [1], [[m4_default([$$2], [$$1])([$$3])[]]])])
-
-# m4_join(SEP, ARG1, ARG2...)
-# ---------------------------
-# Produce ARG1SEPARG2...SEPARGn.  Avoid back-to-back SEP when a given ARG
-# is the empty string.  No expansion is performed on SEP or ARGs.
-#
-# Use a self-modifying separator, since we don't know how many
-# arguments might be skipped before a separator is first printed, but
-# be careful if the separator contains $.  m4_foreach to the rescue.
-m4_define([m4_join],
-[m4_pushdef([_m4_sep], [m4_define([_m4_sep], _m4_defn([m4_echo]))])]dnl
-[m4_foreach([_m4_arg], [m4_shift($@)],
-	    [m4_ifset([_m4_arg], [_m4_sep([$1])_m4_defn([_m4_arg])])])]dnl
-[_m4_popdef([_m4_sep])])
-
-# m4_joinall(SEP, ARG1, ARG2...)
-# ------------------------------
-# Produce ARG1SEPARG2...SEPARGn.  An empty ARG results in back-to-back SEP.
-# No expansion is performed on SEP or ARGs.
-#
-# A bit easier than m4_join.  m4_foreach to the rescue.
-m4_define([m4_joinall],
-[[$2]m4_if(m4_eval([$# <= 2]), [1], [],
-	   [m4_foreach([_m4_arg], [m4_shift2($@)],
-		       [[$1]_m4_defn([_m4_arg])])])])
-
-# m4_list_cmp(A, B)
-# -----------------
-# Compare the two lists of integer expressions A and B.
-#
-# m4_list_cmp takes care of any side effects; we only override
-# _m4_list_cmp_raw, where we can safely expand lists multiple times.
-# First, insert padding so that both lists are the same length; the
-# trailing +0 is necessary to handle a missing list.  Next, create a
-# temporary macro to perform pairwise comparisons until an inequality
-# is found.  For example, m4_list_cmp([1], [1,2]) creates _m4_cmp as
-#   m4_if(m4_eval([($1) != ($3)]), [1], [m4_cmp([$1], [$3])],
-#         m4_eval([($2) != ($4)]), [1], [m4_cmp([$2], [$4])],
-#         [0]_m4_popdef([_m4_cmp], [_m4_size]))
-# then calls _m4_cmp([1+0], [0], [1], [2+0])
-m4_define([_m4_list_cmp_raw],
-[m4_if([$1], [$2], 0, [m4_pushdef(
-     [_m4_size])_m4_list_cmp($1+0_m4_list_pad(m4_count($1), m4_count($2)),
-			     $2+0_m4_list_pad(m4_count($2), m4_count($1)))])])
-
-m4_define([_m4_list_pad],
-[m4_if(m4_eval($1 < $2), [1],
-       [_m4_for([_m4_size], m4_incr([$1]), [$2], [1], [,0])])])
-
-m4_define([_m4_list_cmp],
-[m4_define([_m4_size], m4_eval([$# >> 1]))]dnl
-[m4_define([_m4_cmp], m4_pushdef([_m4_cmp])[m4_if(]_m4_for([_m4_cmp],
-   [1], _m4_size, [1], [$0_(_m4_cmp, m4_eval(_m4_cmp + _m4_size))])[
-      [0]_m4_popdef([_m4_cmp], [_m4_size]))])_m4_cmp($@)])
-
-m4_define([_m4_list_cmp_],
-[[m4_eval([($$1) != ($$2)]), [1], [m4_cmp([$$1], [$$2])],
-]])
-
-# m4_max(EXPR, ...)
-# m4_min(EXPR, ...)
-# -----------------
-# Return the decimal value of the maximum (or minimum) in a series of
-# integer expressions.
-#
-# m4_foreach to the rescue; we only need to replace _m4_minmax.  Here,
-# we need a temporary macro to track the best answer so far, so that
-# the foreach expression is tractable.
-m4_define([_m4_minmax],
-[m4_pushdef([_m4_best], m4_eval([$2]))m4_foreach([_m4_arg], [m4_shift2($@)],
-    [m4_define([_m4_best], $1(_m4_best, _m4_defn([_m4_arg])))])]dnl
-[_m4_best[]_m4_popdef([_m4_best])])
-
-# m4_set_add_all(SET, VALUE...)
-# -----------------------------
-# Add each VALUE into SET.  This is O(n) in the number of VALUEs, and
-# can be faster than calling m4_set_add for each VALUE.
-#
-# m4_foreach to the rescue.  If no deletions have occurred, then avoid
-# the speed penalty of m4_set_add.
-m4_define([m4_set_add_all],
-[m4_if([$#], [0], [], [$#], [1], [],
-       [m4_define([_m4_set_size($1)], m4_eval(m4_set_size([$1])
-	  + m4_len(m4_foreach([_m4_arg], [m4_shift($@)],
-    m4_ifdef([_m4_set_cleanup($1)],
-	     [[m4_set_add([$1], _m4_defn([_m4_arg]))]],
-	     [[m4_ifdef([_m4_set([$1],]_m4_defn([_m4_arg])[)], [],
-			[m4_define([_m4_set([$1],]_m4_defn([_m4_arg])[)],
-				   [1])m4_pushdef([_m4_set([$1])],
-	_m4_defn([_m4_arg]))-])]])))))])])

data/m4sugar/foreach.m4

@@ -0,0 +1 @@
+../../submodules/autoconf/lib/m4sugar/foreach.m4

data/m4sugar/m4sugar.m4

@@ -0,0 +1 @@
+../../submodules/autoconf/lib/m4sugar/m4sugar.m4

data/xslt/bison.xsl

@@ -3,7 +3,7 @@
 <!--
     bison.xsl - common templates for Bison XSLT.
 
-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2011 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, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
@@ -35,11 +35,27 @@
 </xsl:template>
 
 <xsl:template match="bison-xml-report">
-  <xsl:apply-templates select="automaton"/>
+  <xsl:text>// Generated by GNU Bison </xsl:text>
+  <xsl:value-of select="@version"/>
+  <xsl:text>.&#10;</xsl:text>
+  <xsl:text>// Report bugs to &lt;</xsl:text>
+  <xsl:value-of select="@bug-report"/>
+  <xsl:text>&gt;.&#10;</xsl:text>
+  <xsl:text>// Home page: &lt;</xsl:text>
+  <xsl:value-of select="@url"/>
+  <xsl:text>&gt;.&#10;&#10;</xsl:text>
+  <xsl:apply-templates select="automaton">
+    <xsl:with-param name="filename" select="filename"/>
+  </xsl:apply-templates>
 </xsl:template>
 
 <xsl:template match="automaton">
-  <xsl:text>digraph Automaton {&#10;</xsl:text>
+  <xsl:param name="filename"/>
+  <xsl:text>digraph "</xsl:text>
+  <xsl:call-template name="escape">
+    <xsl:with-param name="subject" select="$filename"/>
+  </xsl:call-template>
+  <xsl:text>"&#10;{&#10;</xsl:text>
   <xsl:apply-templates select="state"/>
   <xsl:text>}&#10;</xsl:text>
 </xsl:template>
@@ -196,11 +212,11 @@
         <xsl:with-param name="search" select="$search"/>
         <xsl:with-param name="replace" select="$replace"/>
       </xsl:call-template>
-    </xsl:when> 
+    </xsl:when>
     <xsl:otherwise>
-      <xsl:value-of select="$subject"/>  
+      <xsl:value-of select="$subject"/>
     </xsl:otherwise>
-  </xsl:choose>            
+  </xsl:choose>
 </xsl:template>
 
 </xsl:stylesheet>

data/xslt/xml2text.xsl

@@ -3,7 +3,7 @@
 <!--
     xml2text.xsl - transform Bison XML Report into plain text.
 
-    Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2011 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, 2008 Free Software Foundation, Inc.
+    Copyright (C) 2007-2011 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 
@@ -48,15 +48,15 @@
 	font-size: 9pt;
       }
       a:link {
- 	color: #1f00ff;
+	color: #1f00ff;
 	text-decoration: none;
       }
       a:visited {
- 	color: #1f00ff;
+	color: #1f00ff;
 	text-decoration: none;
       }
       a:hover {
- 	color: red;
+	color: red;
       }
       #menu a {
         text-decoration: underline;

djgpp/Makefile.maint

@@ -1,7 +1,7 @@
 # DJGPP Maintainer's Makefile                                    -*-Makefile-*-
 # Requires GNU sed
 
-## Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+## Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2011 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

@@ -2,8 +2,7 @@
 # Sed script for additional DJGPP specific editing
 # of the configure script generated by autoconf 2.62.
 
-
-# Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+Rem Copyright (C) 2005-2011 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, 2006, 2007, 2008 Free Software Foundation, Inc.
+   Copyright (C) 2005-2011 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

@@ -1,5 +1,6 @@
 /* Subprocesses with pipes.
-   Copyright (C) 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+
+   Copyright (C) 2005-2011 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

@@ -2,8 +2,7 @@
 # Sed script for additional DJGPP specific editing
 # of the testsuite script generated by autoconf 2.61.
 
-
-# Copyright (C) 2007, 2008 Free Software Foundation, Inc.
+# Copyright (C) 2007-2011 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/.cvsignore

@@ -1,25 +0,0 @@
-Makefile
-bison.1
-bison.aux
-bison.cp
-bison.cps
-bison.dvi
-bison.fn
-bison.html
-bison.ky
-bison.log
-bison.pdf
-bison.pg
-bison.ps
-bison.toc
-bison.tp
-bison.vr
-cross-options.texi
-Makefile.in
-refcard.dvi
-refcard.log
-refcard.ps
-*.info*
-stamp-vti
-version.texi
-yacc.1

doc/.gitignore

@@ -1,4 +1,9 @@
+
+/*.info*
+/*~
+/.dirstamp
 /Makefile
+/Makefile.in
 /bison.1
 /bison.aux
 /bison.cp
@@ -15,11 +20,11 @@
 /bison.tp
 /bison.vr
 /cross-options.texi
-/Makefile.in
+/gendocs_template
 /refcard.dvi
 /refcard.log
 /refcard.ps
-/*.info*
 /stamp-vti
 /version.texi
 /yacc.1
+

doc/Makefile.am

@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008 Free Software
-## Foundation, Inc.
+
+## Copyright (C) 2001-2003, 2005-2011 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
@@ -26,9 +26,12 @@ clean-local:
 
 CROSS_OPTIONS_PL = $(top_srcdir)/build-aux/cross-options.pl
 $(srcdir)/cross-options.texi: $(top_srcdir)/src/getargs.c $(CROSS_OPTIONS_PL)
-	-rm -f $@ $@.tmp
+	mv -f $@ $@~ || : >$@~
+	-rm -f $@.tmp
 	cd $(top_builddir)/src && $(MAKE) $(AM_MAKEFLAGS) bison
-	$(top_builddir)/src/bison --help | perl $(CROSS_OPTIONS_PL) >$@.tmp
+	$(top_builddir)/src/bison --help \
+	  | perl $(CROSS_OPTIONS_PL) $(top_srcdir)/src/scan-gram.l >$@.tmp
+	diff -u $@~ $@.tmp || true
 	mv $@.tmp $@
 MAINTAINERCLEANFILES = $(srcdir)/cross-options.texi
 

doc/fdl.texi

@@ -1,12 +1,12 @@
 @c The GNU Free Documentation License.
-@center Version 1.2, November 2002
+@center Version 1.3, 3 November 2008
 
 @c This file is intended to be included within another document,
-@c hence no sectioning command or @node.  
+@c hence no sectioning command or @node.
 
 @display
-Copyright @copyright{} 2000,2001,2002 Free Software Foundation, Inc.
-51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
+Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc.
+@uref{http://fsf.org/}
 
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
@@ -111,6 +111,9 @@ formats which do not have any title page as such, ``Title Page'' means
 the text near the most prominent appearance of the work's title,
 preceding the beginning of the body of the text.
 
+The ``publisher'' means any person or entity that distributes copies
+of the Document to the public.
+
 A section ``Entitled XYZ'' means a named subunit of the Document whose
 title either is precisely XYZ or contains XYZ in parentheses following
 text that translates XYZ in another language.  (Here XYZ stands for a
@@ -379,13 +382,30 @@ title.
 @item
 TERMINATION
 
-You may not copy, modify, sublicense, or distribute the Document except
-as expressly provided for under this License.  Any other attempt to
-copy, modify, sublicense or distribute the Document is void, and will
-automatically terminate your rights under this License.  However,
-parties who have received copies, or rights, from you under this
-License will not have their licenses terminated so long as such
-parties remain in full compliance.
+You may not copy, modify, sublicense, or distribute the Document
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense, or distribute it is void, and
+will automatically terminate your rights under this License.
+
+However, if you cease all violation of this License, then your license
+from a particular copyright holder is reinstated (a) provisionally,
+unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder
+fails to notify you of the violation by some reasonable means prior to
+60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, receipt of a copy of some or all of the same material does
+not give you any rights to use it.
 
 @item
 FUTURE REVISIONS OF THIS LICENSE
@@ -403,7 +423,42 @@ following the terms and conditions either of that specified version or
 of any later version that has been published (not as a draft) by the
 Free Software Foundation.  If the Document does not specify a version
 number of this License, you may choose any version ever published (not
-as a draft) by the Free Software Foundation.
+as a draft) by the Free Software Foundation.  If the Document
+specifies that a proxy can decide which future versions of this
+License can be used, that proxy's public statement of acceptance of a
+version permanently authorizes you to choose that version for the
+Document.
+
+@item
+RELICENSING
+
+``Massive Multiauthor Collaboration Site'' (or ``MMC Site'') means any
+World Wide Web server that publishes copyrightable works and also
+provides prominent facilities for anybody to edit those works.  A
+public wiki that anybody can edit is an example of such a server.  A
+``Massive Multiauthor Collaboration'' (or ``MMC'') contained in the
+site means any set of copyrightable works thus published on the MMC
+site.
+
+``CC-BY-SA'' means the Creative Commons Attribution-Share Alike 3.0
+license published by Creative Commons Corporation, a not-for-profit
+corporation with a principal place of business in San Francisco,
+California, as well as future copyleft versions of that license
+published by that same organization.
+
+``Incorporate'' means to publish or republish a Document, in whole or
+in part, as part of another Document.
+
+An MMC is ``eligible for relicensing'' if it is licensed under this
+License, and if all works that were first published under this License
+somewhere other than this MMC, and subsequently incorporated in whole
+or in part into the MMC, (1) had no cover texts or invariant sections,
+and (2) were thus incorporated prior to November 1, 2008.
+
+The operator of an MMC Site may republish an MMC contained in the site
+under CC-BY-SA on the same site at any time before August 1, 2009,
+provided the MMC is eligible for relicensing.
+
 @end enumerate
 
 @page
@@ -417,7 +472,7 @@ license notices just after the title page:
 @group
   Copyright (C)  @var{year}  @var{your name}.
   Permission is granted to copy, distribute and/or modify this document
-  under the terms of the GNU Free Documentation License, Version 1.2
+  under the terms of the GNU Free Documentation License, Version 1.3
   or any later version published by the Free Software Foundation;
   with no Invariant Sections, no Front-Cover Texts, and no Back-Cover
   Texts.  A copy of the license is included in the section entitled ``GNU

doc/refcard.tex

@@ -19,7 +19,7 @@
 \def\finalout{\overfullrule=0pt}
 %\finalout
 
-% Copyright (c) 1998, 2001  Free Software Foundation, Inc.
+% Copyright (c) 1998, 2001, 2009-2011 Free Software Foundation, Inc.
 %
 % This file is part of Bison.
 %

etc/.cvsignore

@@ -1,3 +0,0 @@
-Makefile
-Makefile.in
-bench.pl

etc/Makefile.am

@@ -1,4 +1,4 @@
-## Copyright (C) 2006 Free Software Foundation, Inc.
+## Copyright (C) 2006, 2009-2011 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

@@ -19,7 +19,7 @@ straightforward use of _build/src/bison would.)
 
 --
 
-Copyright (C) 2006 Free Software Foundation, Inc.
+Copyright (C) 2006, 2009-2011 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 Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008-2011 Free Software Foundation, Inc.
 #
 # This file is part of Bison, the GNU Compiler Compiler.
 #
@@ -343,8 +343,8 @@ sub bench_grammar ($)
     (
      "pull-impure" => '',
      "pull-pure" => '%define api.pure',
-     "push-impure" => '%define api.push_pull "both"',
-     "push-pure" => '%define api.push_pull "both" %define api.pure',
+     "push-impure" => '%define api.push-pull "both"',
+     "push-pure" => '%define api.push-pull "both" %define api.pure',
     );
 
   my %bench;

examples/Makefile.am

@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005 Free Software Foundation, Inc.
+## Copyright (C) 2005, 2009-2011 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++/.cvsignore

@@ -1,11 +0,0 @@
-*.cc
-*.hh
-*.ll
-*.output
-*.stamp
-*.tmp
-*.yy
-.deps
-Makefile
-Makefile.in
-calc++

examples/calc++/Makefile.am

@@ -1,5 +1,5 @@
 ## Process this file with automake to produce Makefile.in -*-Makefile-*-
-## Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+## Copyright (C) 2005-2006, 2009-2011 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
@@ -31,12 +31,16 @@ $(BISON): $(BISON_IN)
 doc = $(top_srcdir)/doc/bison.texinfo
 extexi = $(top_srcdir)/examples/extexi
 # Extract in src.
-$(calc_extracted): $(doc) $(extexi)
+$(srcdir)/calc.stamp: $(doc) $(extexi)
+	rm -f $@ $@.tmp
+	touch $@.tmp
 	cd $(srcdir) && \
 	   $(AWK) -f ../extexi -v VERSION="$(VERSION)" \
 	     ../../doc/bison.texinfo -- calc++-parser.yy \
 	     calc++-scanner.ll calc++.cc calc++-driver.hh calc++-driver.cc
+	mv $@.tmp $@
 
+$(calc_extracted): $(srcdir)/calc.stamp
 
 ## ------------------- ##
 ## Parser generation.  ##
@@ -50,7 +54,10 @@ MAINTAINERCLEANFILES = $(srcdir)/*.stamp $(BUILT_SOURCES)
 # Compile the parser and save cycles.
 # This code comes from "Handling Tools that Produce Many Outputs",
 # from the Automake documentation.
-EXTRA_DIST = $(srcdir)/calc++-parser.stamp $(srcdir)/calc++-parser.yy
+EXTRA_DIST =					\
+  $(srcdir)/calc++-parser.stamp			\
+  $(srcdir)/calc++-parser.yy			\
+  $(srcdir)/calc.stamp
 # Don't depend on $(BISON) otherwise we would rebuild these files
 # in srcdir, including during distcheck, which is forbidden.
 $(srcdir)/calc++-parser.stamp: $(srcdir)/calc++-parser.yy $(BISON_IN)

examples/extexi

@@ -1,7 +1,9 @@
 # Extract all examples from the manual source.            -*- AWK -*-
 
 # This file is part of GNU Bison
-# Copyright 1992, 2000, 2001, 2005, 2006 Free Software Foundation, Inc.
+
+# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2011 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/.cvsignore

@@ -1,105 +0,0 @@
-.deps
-Makefile
-Makefile.in
-argmatch.c
-argmatch.h
-basename.c
-c-ctype.c
-c-ctype.h
-c-strcase.h
-c-strcasecmp.c
-c-strncasecmp.c
-charset.alias
-config.charset
-config.h
-config.hin
-configmake.h
-dirname.c
-dirname.h
-dup-safer.c
-errno.in.h
-error.c
-error.h
-exitfail.c
-exitfail.h
-fd-safer.c
-fopen-safer.c
-getopt.c
-getopt.h
-getopt.in.h
-getopt1.c
-getopt_.h
-getopt_int.h
-gettext.h
-gnulib.mk
-hash.c
-hash.h
-intprops.h
-inttypes.h
-inttypes.in.h
-inttypes_.h
-localcharset.c
-localcharset.h
-malloc.c
-mbswidth.c
-mbswidth.h
-obstack.c
-obstack.h
-pipe-safer.c
-quote.c
-quote.h
-quotearg.c
-quotearg.h
-ref-add.sed
-ref-add.sin
-ref-del.sed
-ref-del.sin
-stamp-h1
-stdbool.h
-stdbool.in.h
-stdbool_.h
-stdint.h
-stdint.in.h
-stdint_.h
-stdio--.h
-stdio-safer.h
-stdlib.h
-stdlib.in.h
-stdlib_.h
-stpcpy.c
-streq.h
-strerror.c
-string.h
-string.in.h
-string_.h
-stripslash.c
-strndup.c
-strnlen.c
-strtol.c
-strtoul.c
-strverscmp.c
-strverscmp.h
-unistd--.h
-unistd-safer.h
-unistd.h
-unistd.in.h
-unistd_.h
-unitypes.h
-uniwidth
-uniwidth.h
-unlocked-io.h
-unsetenv.c
-verify.h
-wchar.h
-wchar.in.h
-wchar_.h
-wctype.h
-wctype.in.h
-wctype_.h
-wcwidth.c
-wcwidth.h
-xalloc-die.c
-xalloc.h
-xmalloc.c
-xstrndup.c
-xstrndup.h

lib/.gitignore

@@ -1,37 +1,77 @@
+
 /*.a
+/*.bak
 /*.o
 /*~
 /.deps
+/.dirstamp
 /Makefile
 /Makefile.in
+/alignof.h
+/alloca.h
+/alloca.in.h
+/arg-nonnull.h
 /argmatch.c
 /argmatch.h
+/asnprintf.c
+/basename-lgpl.c
 /basename.c
+/binary-io.h
+/bitrotate.h
+/c++defs.h
 /c-ctype.c
 /c-ctype.h
 /c-strcase.h
 /c-strcasecmp.c
 /c-strncasecmp.c
+/calloc.c
 /charset.alias
+/cloexec.c
+/cloexec.h
+/close-hook.c
+/close-hook.h
+/close.c
 /config.charset
 /config.h
 /config.hin
 /configmake.h
+/dirname-lgpl.c
 /dirname.c
 /dirname.h
+/dosname.h
+/dup-safer-flag.c
 /dup-safer.c
+/dup2.c
+/errno.h
 /errno.in.h
 /error.c
 /error.h
 /exitfail.c
 /exitfail.h
+/fatal-signal.c
+/fatal-signal.h
+/fclose.c
+/fcntl.c
+/fcntl.h
+/fcntl.in.h
+/fd-safer-flag.c
 /fd-safer.c
+/float+.h
+/float.h
+/float.in.h
 /fopen-safer.c
+/fopen.c
+/fprintf.c
+/fpucw.h
+/frexp.c
+/frexpl.c
+/fseterr.c
+/fseterr.h
+/getdtablesize.c
 /getopt.c
 /getopt.h
 /getopt.in.h
 /getopt1.c
-/getopt_.h
 /getopt_int.h
 /gettext.h
 /gnulib.mk
@@ -40,69 +80,166 @@
 /intprops.h
 /inttypes.h
 /inttypes.in.h
-/inttypes_.h
+/ioctl.c
+/isnan.c
+/isnand-nolibm.h
+/isnand.c
+/isnanf-nolibm.h
+/isnanf.c
+/isnanl-nolibm.h
+/isnanl.c
+/iswblank.c
+/ldexpl.c
 /localcharset.c
 /localcharset.h
 /malloc.c
+/math.h
+/math.in.h
+/mbchar.c
+/mbchar.h
+/mbrtowc.c
+/mbschr.c
+/mbsinit.c
+/mbsrchr.c
 /mbswidth.c
 /mbswidth.h
+/mbuiter.h
+/memchr.c
+/memchr.valgrind
+/nonblocking.c
+/nonblocking.h
 /obstack.c
 /obstack.h
+/open.c
+/perror.c
 /pipe-safer.c
+/pipe.c
+/pipe2-safer.c
+/pipe2.c
+/printf-args.c
+/printf-args.h
+/printf-frexp.c
+/printf-frexp.h
+/printf-frexpl.c
+/printf-frexpl.h
+/printf-parse.c
+/printf-parse.h
+/printf.c
 /quote.c
 /quote.h
 /quotearg.c
 /quotearg.h
+/rawmemchr.c
+/rawmemchr.valgrind
+/realloc.c
 /ref-add.sed
 /ref-add.sin
 /ref-del.sed
 /ref-del.sin
+/sched.h
+/sched.in.h
+/sig-handler.h
+/sigaction.c
+/signal.h
+/signal.in.h
+/signbitd.c
+/signbitf.c
+/signbitl.c
+/sigprocmask.c
+/size_max.h
+/snprintf.c
+/spawn-pipe.c
+/spawn-pipe.h
+/spawn.h
+/spawn.in.h
+/spawn_faction_addclose.c
+/spawn_faction_adddup2.c
+/spawn_faction_addopen.c
+/spawn_faction_destroy.c
+/spawn_faction_init.c
+/spawn_int.h
+/spawnattr_destroy.c
+/spawnattr_init.c
+/spawnattr_setflags.c
+/spawnattr_setsigmask.c
+/spawni.c
+/spawnp.c
+/sprintf.c
 /stamp-h1
+/stat.c
 /stdbool.h
 /stdbool.in.h
-/stdbool_.h
+/stddef.h
+/stddef.in.h
 /stdint.h
 /stdint.in.h
-/stdint_.h
 /stdio--.h
+/stdio-impl.h
 /stdio-safer.h
+/stdio-write.c
+/stdio.h
+/stdio.in.h
 /stdlib.h
 /stdlib.in.h
-/stdlib_.h
 /stpcpy.c
+/strchrnul.c
+/strchrnul.valgrind
+/strdup.c
 /streq.h
 /strerror.c
 /string.h
 /string.in.h
-/string_.h
 /stripslash.c
 /strndup.c
 /strnlen.c
+/strnlen1.c
+/strnlen1.h
 /strtol.c
 /strtoul.c
 /strverscmp.c
-/strverscmp.h
+/sys
+/sys_ioctl.h
+/sys_ioctl.in.h
+/sys_socket.h
+/sys_socket.in.h
+/sys_stat.h
+/sys_stat.in.h
+/sys_wait.h
+/sys_wait.in.h
+/time.h
+/time.in.h
 /unistd--.h
 /unistd-safer.h
 /unistd.h
 /unistd.in.h
-/unistd_.h
 /unitypes.h
+/unitypes.in.h
 /uniwidth
 /uniwidth.h
+/uniwidth.in.h
 /unlocked-io.h
 /unsetenv.c
+/vasnprintf.c
+/vasnprintf.h
 /verify.h
+/vfprintf.c
+/vsnprintf.c
+/vsprintf.c
+/w32sock.h
+/w32spawn.h
+/wait-process.c
+/wait-process.h
+/waitpid.c
+/warn-on-use.h
 /wchar.h
 /wchar.in.h
-/wchar_.h
 /wctype.h
 /wctype.in.h
-/wctype_.h
 /wcwidth.c
-/wcwidth.h
 /xalloc-die.c
 /xalloc.h
 /xmalloc.c
+/xsize.h
 /xstrndup.c
 /xstrndup.h
+

lib/Makefile.am

@@ -1,6 +1,6 @@
 # Make bison/lib.
 
-# Copyright (C) 2001, 2002, 2003, 2004, 2006, 2008 Free Software Foundation,
+# Copyright (C) 2001-2004, 2006, 2008-2011 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -18,7 +18,7 @@
 
 include gnulib.mk
 
-AM_CFLAGS = $(WARN_CFLAGS)
+AM_CFLAGS += $(WARN_CFLAGS)
 
 # Implementation of bitsets.
 bitsets_sources = \
@@ -37,7 +37,6 @@ timevars_sources = \
 # Non-gnulib sources in Bison's internal library.
 libbison_a_SOURCES += \
   get-errno.h get-errno.c \
-  subpipe.h subpipe.c \
   $(bitsets_sources) $(additional_bitsets_sources) $(timevars_sources)
 
 # The Yacc compatibility library.

lib/abitset.c

@@ -1,5 +1,8 @@
 /* Array bitsets.
-   Copyright (C) 2002, 2003, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2003, 2006, 2009-2011 Free Software Foundation,
+   Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/abitset.h

@@ -1,5 +1,7 @@
 /* Functions to support abitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bbitset.h

@@ -1,5 +1,8 @@
 /* Base bitset stuff.
-   Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2004, 2006, 2009-2011 Free Software Foundation,
+   Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bitset.c

@@ -1,5 +1,7 @@
 /* General bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2006, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bitset.h

@@ -1,5 +1,7 @@
 /* Generic bitsets.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bitset_stats.c

@@ -1,5 +1,7 @@
 /* Bitset statistics.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2006, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bitset_stats.h

@@ -1,5 +1,7 @@
 /* Functions to support bitset statistics.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/bitsetv-print.c

@@ -1,5 +1,7 @@
 /* Bitset vectors.
-   Copyright (C) 2001, 2002, 2004, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2001-2002, 2004, 2006, 2009-2011 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/bitsetv-print.h

@@ -1,5 +1,7 @@
 /* Bitset vectors.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Akim Demaille (akim@freefriends.org).
 
    This program is free software: you can redistribute it and/or modify

lib/bitsetv.c

@@ -1,5 +1,7 @@
 /* Bitset vectors.
-   Copyright (C) 2001, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2001-2002, 2004-2006, 2009-2011 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/bitsetv.h

@@ -1,5 +1,7 @@
 /* Bitset vectors.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/ebitset.c

@@ -1,5 +1,7 @@
 /* Functions to support expandable bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2006, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/ebitset.h

@@ -1,5 +1,7 @@
 /* Functions to support ebitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/get-errno.c

@@ -1,6 +1,6 @@
 /* get-errno.c - get and set errno.
 
-   Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2006, 2009-2011 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 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2011 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

@@ -1,5 +1,8 @@
 /* Functions to support link list bitsets.
-   Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2004, 2006, 2009-2011 Free Software Foundation,
+   Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/lbitset.h

@@ -1,5 +1,7 @@
 /* Functions to support lbitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/libiberty.h

@@ -1,5 +1,6 @@
 /* Fake libiberty.h for Bison.
-   Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2004, 2009-2011 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 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2009-2011 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 

lib/subpipe.c

@@ -1,176 +0,0 @@
-/* Subprocesses with pipes.
-
-   Copyright (C) 2002, 2004, 2005, 2006 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
-   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/>.  */
-
-/* Written by Paul Eggert <[email protected]>
-   and Florian Krohm <florian@edamail.fishkill.ibm.com>.  */
-
-#include <config.h>
-
-#include "subpipe.h"
-
-#include <errno.h>
-
-#include <signal.h>
-#if ! defined SIGCHLD && defined SIGCLD
-# define SIGCHLD SIGCLD
-#endif
-
-#include <stdlib.h>
-
-#include <unistd.h>
-#ifndef STDIN_FILENO
-# define STDIN_FILENO 0
-#endif
-#ifndef STDOUT_FILENO
-# define STDOUT_FILENO 1
-#endif
-#if ! HAVE_DUP2 && ! defined dup2
-# include <fcntl.h>
-# define dup2(f, t) (close (t), fcntl (f, F_DUPFD, t))
-#endif
-
-#if HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-#ifndef WEXITSTATUS
-# define WEXITSTATUS(stat_val) ((unsigned int) (stat_val) >> 8)
-#endif
-#ifndef WIFEXITED
-# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
-#endif
-
-#if HAVE_VFORK_H
-# include <vfork.h>
-#endif
-#if ! HAVE_WORKING_VFORK
-# define vfork fork
-#endif
-
-#include "error.h"
-#include "unistd-safer.h"
-
-#include "gettext.h"
-#define _(Msgid)  gettext (Msgid)
-
-#ifndef __attribute__
-/* This feature is available in gcc versions 2.5 and later.  */
-# if ! defined __GNUC__ || __GNUC__ < 2 || \
-(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
-#  define __attribute__(Spec) /* empty */
-# endif
-#endif
-
-#ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
-#endif
-
-
-/* Initialize this module.  */
-
-void
-init_subpipe (void)
-{
-#ifdef SIGCHLD
-  /* System V fork+wait does not work if SIGCHLD is ignored.  */
-  signal (SIGCHLD, SIG_DFL);
-#endif
-}
-
-
-/* Create a subprocess that is run as a filter.  ARGV is the
-   NULL-terminated argument vector for the subprocess.  Store read and
-   write file descriptors for communication with the subprocess into
-   FD[0] and FD[1]: input meant for the process can be written into
-   FD[0], and output from the process can be read from FD[1].  Return
-   the subprocess id.
-
-   To avoid deadlock, the invoker must not let incoming data pile up
-   in FD[1] while writing data to FD[0].  */
-
-pid_t
-create_subpipe (char const * const *argv, int fd[2])
-{
-  int pipe_fd[2];
-  int child_fd[2];
-  pid_t pid;
-
-  if (pipe_safer (child_fd) != 0 || pipe_safer (pipe_fd) != 0)
-    error (EXIT_FAILURE, errno, "pipe");
-  fd[0] = child_fd[1];
-  fd[1] = pipe_fd[0];
-  child_fd[1] = pipe_fd[1];
-
-  pid = vfork ();
-  if (pid < 0)
-    error (EXIT_FAILURE, errno, "fork");
-
-  if (! pid)
-    {
-      /* Child.  */
-      close (fd[0]);
-      close (fd[1]);
-      dup2 (child_fd[0], STDIN_FILENO);
-      close (child_fd[0]);
-      dup2 (child_fd[1], STDOUT_FILENO);
-      close (child_fd[1]);
-
-      /* The cast to (char **) rather than (char * const *) is needed
-	 for portability to older hosts with a nonstandard prototype
-	 for execvp.  */
-      execvp (argv[0], (char **) argv);
-
-      _exit (errno == ENOENT ? 127 : 126);
-    }
-
-  /* Parent.  */
-  close (child_fd[0]);
-  close (child_fd[1]);
-  return pid;
-}
-
-
-/* Wait for the subprocess to exit.  */
-
-void
-reap_subpipe (pid_t pid, char const *program)
-{
-#if HAVE_WAITPID || defined waitpid
-  int wstatus;
-  if (waitpid (pid, &wstatus, 0) < 0)
-    error (EXIT_FAILURE, errno, "waitpid");
-  else
-    {
-      int status = WIFEXITED (wstatus) ? WEXITSTATUS (wstatus) : -1;
-      if (status)
-	error (EXIT_FAILURE, 0,
-	       _(status == 126
-		 ? "subsidiary program `%s' could not be invoked"
-		 : status == 127
-		 ? "subsidiary program `%s' not found"
-		 : status < 0
-		 ? "subsidiary program `%s' failed"
-		 : "subsidiary program `%s' failed (exit status %d)"),
-	       program, status);
-    }
-#endif
-}
-
-void
-end_of_output_subpipe (pid_t pid ATTRIBUTE_UNUSED,
-		       int fd[2] ATTRIBUTE_UNUSED)
-{
-}

lib/timevar.c

@@ -1,5 +1,8 @@
 /* Timing variables for measuring compiler performance.
-   Copyright (C) 2000, 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2000, 2002, 2004, 2006, 2009-2011 Free Software
+   Foundation, Inc.
+
    Contributed by Alex Samuel <samuel@codesourcery.com>
 
    This program is free software: you can redistribute it and/or modify

lib/timevar.def

@@ -1,6 +1,8 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
    measure run-time performance of the compiler.
-   Copyright (C) 2002, 2007 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2007, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Akim Demaille <akim@freefriends.org>.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -41,6 +43,10 @@ DEFTIMEVAR (TV_REDUCE                , "reducing the grammar")
 DEFTIMEVAR (TV_SETS                  , "computing the sets")
 DEFTIMEVAR (TV_LR0                   , "LR(0)")
 DEFTIMEVAR (TV_LALR                  , "LALR(1)")
+DEFTIMEVAR (TV_IELR_PHASE1           , "IELR(1) Phase 1")
+DEFTIMEVAR (TV_IELR_PHASE2           , "IELR(1) Phase 2")
+DEFTIMEVAR (TV_IELR_PHASE3           , "IELR(1) Phase 3")
+DEFTIMEVAR (TV_IELR_PHASE4           , "IELR(1) Phase 4")
 DEFTIMEVAR (TV_CONFLICTS             , "conflicts")
 
 /* Time spent outputing results.  */

lib/timevar.h

@@ -1,5 +1,8 @@
 /* Timing variables for measuring compiler performance.
-   Copyright (C) 2000, 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2000, 2002, 2004, 2009-2011 Free Software Foundation,
+   Inc.
+
    Contributed by Alex Samuel <samuel@codesourcery.com>
 
    This program is free software: you can redistribute it and/or modify

lib/vbitset.c

@@ -1,5 +1,7 @@
 /* Variable array bitsets.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+   Copyright (C) 2002-2006, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify

lib/vbitset.h

@@ -1,5 +1,7 @@
 /* Functions to support vbitsets.
-   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+   Copyright (C) 2002, 2004, 2009-2011 Free Software Foundation, Inc.
+
    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    This program is free software: you can redistribute it and/or modify