version 3.5.2

* NEWS: Record release date.

.prev-version

@@ -1 +1 @@
-3.4.92
+3.5.1

.travis.yml

@@ -1,14 +1,8 @@
-# Travis defines and exports CC and CXX *after* we have defined our
+version: ~> 1.0
-# environment variables via 'env'.  So, do not use 'env' to define them.
-# Instead, put their definitions in MATRIX_EVAL, which we eval after the
-# definitions from Travis.
-language: cpp
 
-env:
+# If the language is set to C or C++, Travis defines and exports CC
-  global:
+# and CXX *after* we have defined our environment variables via 'env'.
-    # ICC serial number.
+language: minimal
-    # See https://github.com/nemequ/icc-travis.
-    secure: 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
 
 # Run in two steps:
 # 1. Build the tarball
@@ -87,7 +81,9 @@ jobs:
             - sourceline: 'ppa:ubuntu-toolchain-r/test'
           packages: g++-9
       env:
-        - MATRIX_EVAL="CC=gcc-9 && CXX=g++-9 && CONFIGUREFLAGS='CPPFLAGS=-DNDEBUG CFLAGS=-O3 CXXFLAGS=-O3'"
+        - CC=gcc-9
+        - CXX=g++-9
+        - CONFIGUREFLAGS='CPPFLAGS=-DNDEBUG CFLAGS=-O3 CXXFLAGS=-O3'
 
     # ASAN is time consuming, and we timeout the 50min granted by
     # Travis if we run all the tests in one go.  Run in two parts.
@@ -108,7 +104,8 @@ jobs:
             - libc++abi-9-dev
       env:
         # Do not use ASAN with ubuntu's libc++: https://bugs.llvm.org/show_bug.cgi?id=17379
-        - MATRIX_EVAL="CC='clang-9 -fsanitize=address' CXX='clang++-9 -fsanitize=address -stdlib=libc++'"
+        - CC='clang-9 -fsanitize=address'
+        - CXX='clang++-9 -fsanitize=address -stdlib=libc++'
         - PART=1
 
     - name: "Clang 9 libc++ and ASAN part 2"
@@ -118,26 +115,26 @@ jobs:
       addons: *clang9
       env:
         # Do not use ASAN with ubuntu's libc++: https://bugs.llvm.org/show_bug.cgi?id=17379
-        - MATRIX_EVAL="CC='clang-9 -fsanitize=address' CXX='clang++-9 -fsanitize=address -stdlib=libc++'"
+        - CC='clang-9 -fsanitize=address'
+        - CXX='clang++-9 -fsanitize=address -stdlib=libc++'
         - PART=2
 
-    # Currently no longer works (https://github.com/nemequ/icc-travis/issues/15).
+    - name: "ICC"
-    # - name: "ICC"
+      stage: check
-    #   stage: check
+      os: linux
-    #   # We need the build-aux/install-icc.sh script.
+      compiler: icc
-    #   git:
+      env:
-    #     clone: true
+        - CC=icc
-    #     submodules: false
+        - CXX=icpc
-    #     depth: 1
+      install:
-    #   os: linux
+        - source /opt/intel/inteloneapi/compiler/latest/env/vars.sh
-    #   dist: xenial
+      addons:
-    #   env:
+        apt:
-    #     # ICC's warnings are often very wrong (e.g., it thinks foo ?
+          sources:
-    #     # "bar" : "baz" is char* instead of const char*), so don't try
+          - sourceline: 'deb https://apt.repos.intel.com/oneapi all main'
-    #     # to work around the, and obviously, don't die on them.
+            key_url: 'https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB'
-    #     - MATRIX_EVAL="CC=icc && CXX=icpc"
+          packages:
-    #     - MAKE_ARGS='WERROR_CFLAGS= WERROR_CXXFLAGS='
+          - intel-oneapi-icc
-
 
     ## ----- ##
     ## GCC.  ##
@@ -150,7 +147,8 @@ jobs:
         apt:
           packages: g++-8
       env:
-        - MATRIX_EVAL="CC='gcc-8 -fsanitize=undefined,address -fno-omit-frame-pointer' CXX='g++-8 -fsanitize=undefined,address -fno-omit-frame-pointer'"
+        - CC='gcc-8 -fsanitize=undefined,address -fno-omit-frame-pointer'
+        - CXX='g++-8 -fsanitize=undefined,address -fno-omit-frame-pointer'
         - CONFIGUREFLAGS='CFLAGS=-O1 CXXFLAGS=-O1'
         - PART=1
 
@@ -162,7 +160,8 @@ jobs:
         apt:
           packages: g++-8
       env:
-        - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
+        - CC=gcc-8
+        - CXX=g++-8
 
     - name: "GCC 7"
       stage: check
@@ -172,7 +171,8 @@ jobs:
         apt:
           packages: g++-7
       env:
-        - MATRIX_EVAL="CC=gcc-7 && CXX=g++-7"
+        - CC=gcc-7
+        - CXX=g++-7
 
     - name: "GCC 6"
       stage: check
@@ -183,7 +183,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-6
       env:
-        - MATRIX_EVAL="CC=gcc-6 && CXX=g++-6"
+        - CC=gcc-6
+        - CXX=g++-6
 
     - name: "GCC 5"
       stage: check
@@ -194,7 +195,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-5
       env:
-         - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
+         - CC=gcc-5
+         - CXX=g++-5
 
     - name: "GCC 4.9"
       stage: check
@@ -205,7 +207,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-4.9
       env:
-         - MATRIX_EVAL="CC=gcc-4.9 && CXX=g++-4.9"
+         - CC=gcc-4.9
+         - CXX=g++-4.9
 
     - name: "GCC 4.8"
       stage: check
@@ -216,7 +219,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-4.8
       env:
-         - MATRIX_EVAL="CC=gcc-4.8 && CXX=g++-4.8"
+         - CC=gcc-4.8
+         - CXX=g++-4.8
 
     - name: "GCC 4.7"
       stage: check
@@ -227,7 +231,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-4.7
       env:
-         - MATRIX_EVAL="CC=gcc-4.7 && CXX=g++-4.7"
+         - CC=gcc-4.7
+         - CXX=g++-4.7
 
     - name: "GCC 4.6"
       stage: check
@@ -238,7 +243,8 @@ jobs:
           sources: ubuntu-toolchain-r-test
           packages: g++-4.6
       env:
-         - MATRIX_EVAL="CC=gcc-4.6 && CXX=g++-4.6"
+         - CC=gcc-4.6
+         - CXX=g++-4.6
 
     ## ------- ##
     ## Clang.  ##
@@ -255,7 +261,8 @@ jobs:
             - libc++-8-dev
             - libc++abi-8-dev
       env:
-        - MATRIX_EVAL="CC=clang-8 && CXX='clang++-8 -stdlib=libc++'"
+        - CC=clang-8
+        - CXX='clang++-8 -stdlib=libc++'
         - CONFIGUREFLAGS='CPPFLAGS=-DNDEBUG CFLAGS=-O3 CXXFLAGS=-O3'
 
     - name: "Clang 7"
@@ -269,7 +276,8 @@ jobs:
             - libc++-7-dev
             - libc++abi-7-dev
       env:
-        - MATRIX_EVAL="CC=clang-7 && CXX='clang++-7 -stdlib=libc++'"
+        - CC=clang-7
+        - CXX='clang++-7 -stdlib=libc++'
 
     - name: "Clang 6 and libc++"
       stage: check
@@ -284,7 +292,8 @@ jobs:
             - clang-6.0
             - libc++-dev
       env:
-        - MATRIX_EVAL="CC=clang-6.0 && CXX='clang++-6.0 -stdlib=libc++'"
+        - CC=clang-6.0
+        - CXX='clang++-6.0 -stdlib=libc++'
 
     - name: "Clang 5"
       stage: check
@@ -297,7 +306,8 @@ jobs:
             - clang-5.0
             - libc++-dev
       env:
-        - MATRIX_EVAL="CC='clang-5.0' CXX='clang++-5.0'"
+        - CC='clang-5.0'
+        - CXX='clang++-5.0'
 
     - name: "Clang 4"
       stage: check
@@ -308,7 +318,8 @@ jobs:
           sources: llvm-toolchain-xenial-4.0
           packages: clang-4.0
       env:
-        - MATRIX_EVAL="CC=clang-4.0 && CXX=clang++-4.0"
+        - CC=clang-4.0
+        - CXX=clang++-4.0
 
     - name: "Clang 3.9"
       stage: check
@@ -319,7 +330,8 @@ jobs:
           sources: llvm-toolchain-xenial-3.9
           packages: clang-3.9
       env:
-        - MATRIX_EVAL="CC=clang-3.9 && CXX=clang++-3.9"
+        - CC=clang-3.9
+        - CXX=clang++-3.9
 
     - name: "Clang 3.8"
       stage: check
@@ -332,7 +344,8 @@ jobs:
             - llvm-toolchain-precise-3.8
           packages: clang-3.8
       env:
-        - MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8"
+        - CC=clang-3.8
+        - CXX=clang++-3.8
 
     - name: "CLang 3.7"
       stage: check
@@ -345,7 +358,8 @@ jobs:
             - llvm-toolchain-precise-3.7
           packages: clang-3.7
       env:
-        - MATRIX_EVAL="CC=clang-3.7 && CXX=clang++-3.7"
+        - CC=clang-3.7
+        - CXX=clang++-3.7
 
     - name: "Clang 3.6"
       stage: check
@@ -358,7 +372,8 @@ jobs:
             - llvm-toolchain-precise-3.6
           packages: clang-3.6
       env:
-        - MATRIX_EVAL="CC=clang-3.6 && CXX=clang++-3.6"
+        - CC=clang-3.6
+        - CXX=clang++-3.6
 
     - name: "Clang 3.5"
       stage: check
@@ -371,7 +386,8 @@ jobs:
             - llvm-toolchain-precise-3.5
           packages: clang-3.5
       env:
-        - MATRIX_EVAL="CC=clang-3.5 && CXX=clang++-3.5"
+        - CC=clang-3.5
+        - CXX=clang++-3.5
 
     - name: "Clang 3.4"
       stage: check
@@ -384,7 +400,8 @@ jobs:
       env:
         # No versioned name installed, but beware that Travis installs
         # a more modern clang earlier in the default PATH.
-        - MATRIX_EVAL='CC=/usr/bin/clang && CXX=/usr/bin/clang++'
+        - CC=/usr/bin/clang
+        - CXX=/usr/bin/clang++
 
     - name: "Clang 3.3"
       stage: check
@@ -396,7 +413,8 @@ jobs:
           packages: clang-3.3
       env:
         # See comment for 3.4.
-        - MATRIX_EVAL='CC=/usr/bin/clang && CXX=/usr/bin/clang++'
+        - CC=/usr/bin/clang
+        - CXX=/usr/bin/clang++
 
 ## From https://docs.gitlab.com/ce/ci/ssh_keys/#ssh-keys-when-using-the-docker-executor.
 ## Applies to Travis too.  Applied to all the 'script's (of all the jobs).
@@ -414,13 +432,9 @@ before_script:
 
 # Applies only to the jobs that don't have a 'script', i.e., applies to all the 'check' jobs, but not the 'dist' one.
 script:
-  - eval "$MATRIX_EVAL"
   # Beware not too leak $SSH_PRIVATE_KEY.
   # - env
   - sudo apt-get install -qq doxygen flex m4
-  # Install and activate ICC.
-  - if [[ $CC == "icc" ]]; then build-aux/install-icc.sh; fi
-  - if [[ -f ~/.bashrc ]]; then source ~/.bashrc; fi
   # Install and activate dmd.
   - mkdir -p ~/dlang && wget https://dlang.org/install.sh -O ~/dlang/install.sh
   - source $(source ~/dlang/install.sh dmd -a)
@@ -452,6 +466,3 @@ script:
   - if test ${PART-1} = 1; then make check                  VERBOSE=1 TESTSUITEFLAGS=-j2 || { cat test-suite.log && cat tests/testsuite.log && false; }; fi
   - if test ${PART-2} = 2; then make maintainer-check-posix VERBOSE=1 TESTSUITEFLAGS=-j2 || { cat tests/testsuite.log && false; }; fi
   - if test ${PART-2} = 2; then make maintainer-check-g++   VERBOSE=1 TESTSUITEFLAGS=-j2 || { cat tests/testsuite.log && false; }; fi
-
-after_script:
-  - uninstall_intel_software || true

AUTHORS

@@ -24,7 +24,7 @@ and nasty bugs.
 
 -----
 
-Copyright (C) 1998-2015, 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 1998-2015, 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

ChangeLog-2012

@@ -26733,7 +26733,7 @@
 
 	-----
 
-	Copyright (C) 1987-1988, 1991-2015, 2018-2019 Free Software
+	Copyright (C) 1987-1988, 1991-2015, 2018-2020 Free Software
 	Foundation, Inc.
 
 	Copying and distribution of this file, with or without

Makefile.am

@@ -1,6 +1,6 @@
 ## Process this file with automake to produce Makefile.in.
 
-# Copyright (C) 2001-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2001-2015, 2018-2020 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

NEWS

@@ -1,5 +1,22 @@
 GNU Bison NEWS
 
+* Noteworthy changes in release 3.5.2 (2020-02-13) [stable]
+
+** Bug fixes
+
+  Portability issues and minor cosmetic issues.
+
+  The lalr1.cc skeleton properly rejects unsupported values for parse.lac
+  (as yacc.c does).
+
+* Noteworthy changes in release 3.5.1 (2020-01-19) [stable]
+
+** Bug fixes
+
+  Portability fixes.
+
+  Fix compiler warnings.
+
 * Noteworthy changes in release 3.5 (2019-12-11) [stable]
 
 ** Backward incompatible changes
@@ -3811,7 +3828,7 @@ Output file does not redefine const for C++.
 
 -----
 
-Copyright (C) 1995-2015, 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 1995-2015, 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 

PACKAGING

@@ -36,7 +36,7 @@ to the bison package.
 
 -----
 
-Copyright (C) 2002, 2005, 2009-2015, 2018-2019 Free Software Foundation,
+Copyright (C) 2002, 2005, 2009-2015, 2018-2020 Free Software Foundation,
 Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.

README

@@ -80,7 +80,7 @@ that the range specifies every single year in that closed interval.
 
 <!--
 
-Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2015, 2018-2019 Free
+Copyright (C) 1992, 1998-1999, 2003-2005, 2008-2015, 2018-2020 Free
 Software Foundation, Inc.
 
 This file is part of GNU bison, the GNU Compiler Compiler.

README-alpha

@@ -12,7 +12,7 @@ the problems you encounter.
 
 -----
 
-Copyright (C) 2002, 2004, 2009-2015, 2018-2019 Free Software Foundation,
+Copyright (C) 2002, 2004, 2009-2015, 2018-2020 Free Software Foundation,
 Inc.
 
 This file is part of GNU Bison.

README-hacking.md

@@ -507,7 +507,7 @@ Push these changes.
 
 <!--
 
-Copyright (C) 2002-2005, 2007-2015, 2018-2019 Free Software Foundation,
+Copyright (C) 2002-2005, 2007-2015, 2018-2020 Free Software Foundation,
 Inc.
 
 This file is part of GNU Bison.

THANKS

@@ -60,6 +60,7 @@ Enrico Scholz             [email protected]
 Eric Blake                [email protected]
 Eric S. Raymond           [email protected]
 Étienne Renault           [email protected]
+Evan Nemerson             [email protected]
 Evgeny Stambulchik        [email protected]
 Fabrice Bauzac            [email protected]
 Ferdinand Thiessen        [email protected]
@@ -79,6 +80,7 @@ Hans Åberg                [email protected]
 Horst Von Brand           [email protected]
 Jan Nieuwenhuizen         [email protected]
 Jannick                   [email protected]
+Jeff Hammond              [email protected]
 Jerry Quinn               [email protected]
 Jesse Thilo               [email protected]
 Jim Kent                  [email protected]
@@ -128,6 +130,7 @@ Nick Bowler               [email protected]
 Nicolas Bedon             [email protected]
 Nicolas Burrus            [email protected]
 Nicolas Tisserand         [email protected]
+Nikki Valen               [email protected]
 Noah Friedman             [email protected]
 Odd Arild Olsen           [email protected]
 Oleg Smolsky              [email protected]
@@ -219,7 +222,7 @@ End:
 
 -----
 
-Copyright (C) 2000-2015, 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2000-2015, 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Parser Generator.
 

TODO

@@ -612,7 +612,7 @@ End:
 
 -----
 
-Copyright (C) 2001-2004, 2006, 2008-2015, 2018-2019 Free Software
+Copyright (C) 2001-2004, 2006, 2008-2015, 2018-2020 Free Software
 Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.

bootstrap

@@ -4,7 +4,7 @@ scriptversion=2019-01-04.17; # UTC
 
 # Bootstrap this package from checked-out sources.
 
-# Copyright (C) 2003-2019 Free Software Foundation, Inc.
+# Copyright (C) 2003-2020 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

bootstrap.conf

@@ -1,6 +1,6 @@
 # Bootstrap configuration.
 
-# Copyright (C) 2006-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2006-2015, 2018-2020 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/Darwin.valgrind

@@ -1,4 +1,4 @@
-# Copyright (C) 2012-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2012-2015, 2018-2020 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/Linux.valgrind

@@ -1,4 +1,4 @@
-# Copyright (C) 2012-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2012-2015, 2018-2020 Free Software Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/cross-options.pl

@@ -1,5 +1,24 @@
 #! /usr/bin/env perl
 
+# Generate a release announcement message.
+
+# Copyright (C) 2007-2020 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 <https://www.gnu.org/licenses/>.
+#
+# Written by Akimn Demaille.
+
 use warnings;
 use 5.005;
 use strict;

build-aux/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2000-2015, 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2000-2015, 2018-2020 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by

build-aux/update-b4-copyright

@@ -3,7 +3,7 @@
 # Update b4_copyright invocations or b4_copyright_years definitions to
 # include the current year.
 
-# Copyright (C) 2009-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2009-2015, 2018-2020 Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/update-package-copyright-year

@@ -2,7 +2,7 @@
 
 # In configure.ac, update PACKAGE_COPYRIGHT_YEAR to the current year.
 
-# Copyright (C) 2010-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2010-2015, 2018-2020 Free Software Foundation, Inc.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by

build-aux/update-test

@@ -1,5 +1,24 @@
 #! /usr/bin/env python
 
+# Update expectations in an Autotest test suite.
+
+# Copyright (C) 2019-2020 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 <https://www.gnu.org/licenses/>.
+#
+# Written by Akim Demaille.
+
 # usage:
 #
 #    update-test _build/8d/tests/testsuite.dir/*/testsuite.log

cfg.mk

@@ -1,5 +1,5 @@
 ## Customize maint.mk                           -*- makefile -*-
-## Copyright (C) 2008-2015, 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2008-2015, 2018-2020 Free Software Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by

configure.ac

@@ -1,6 +1,6 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2001-2015, 2018-2020 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
@@ -26,8 +26,10 @@ m4_pattern_allow([^BISON_USE_NLS$])
 
 AC_INIT([GNU Bison],
         m4_esyscmd([build-aux/git-version-gen .tarball-version]),
-        [[email protected]])
+        [[email protected]],
-AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2019])
+        [],
+        [https://www.gnu.org/software/bison/])
+AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2020])
 AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
                    [The copyright year for this package])
 
@@ -100,12 +102,41 @@ if test "$enable_gcc_warnings" = yes; then
   # -Wno-tautological-constant-out-of-range-compare for Clang 3.3 and
   # 3.4 on GNU/Linux that choke on intprops.h's INT_MULTIPLY_WRAPV,
   # etc.
-  warn_common='-Wall -Wextra -Wcast-align
+  #
+  # ICC: -wr188
+  #
+  # 1669  warnings warnings_default =
+  # ../src/complain.c(318): error #188: enumerated type mixed with another type
+  # 1670      Wconflicts_sr | Wconflicts_rr | Wdeprecated | Wother;
+  # 1671      ^
+  # 1672
+  # 1673../src/complain.c(393): error #188: enumerated type mixed with another type
+  # 1674          warnings w = 1 << wbit;
+  # 1675                       ^
+  #
+  # ICC: -wr3179
+  #
+  # char const *usefulness
+  #   = rule_useless_in_grammar_p (&rules[r]) ? "useless-in-grammar"
+  #   : rule_useless_in_parser_p (&rules[r])  ? "useless-in-parser"
+  #   :                                         "useful";
+  #
+  # gives
+  #
+  # error #3179: deprecated conversion of string literal to char* (should be const char*)
+  #
+  # ICC: -wr2259 (that's in C, in spite of what the error messages which seems to be about C++).
+  # error #2259: non-pointer conversion from "int" to "yybool={signed char}" may lose significant bits
+  #   yybool yynormal YY_ATTRIBUTE_UNUSED = yystackp->yysplitPoint == YY_NULLPTR;
+  #                                         ^
+  warn_common='-Wall -Wextra
+    -Wcast-align -Wchar-subscripts
     -fparse-all-comments -Wdocumentation
     -Wformat -Wimplicit-fallthrough -Wnull-dereference
     -Wno-sign-compare -Wno-tautological-constant-out-of-range-compare
     -Wpointer-arith -Wshadow
-    -Wwrite-strings'
+    -Wwrite-strings
+    -wr188 -wr2259 -wr3179'
   warn_c='-Wbad-function-cast -Wstrict-prototypes'
   warn_cxx='-Wextra-semi -Wnoexcept -Wold-style-cast -Wundefined-func-template
     -Wweak-vtables'

data/README.md

@@ -174,7 +174,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2002, 2008-2015, 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2002, 2008-2015, 2018-2020 Free Software Foundation, Inc.
 
 This file is part of GNU Bison.
 

data/bison-default.css

@@ -1,5 +1,5 @@
 /* Default styling rules for Bison when doing terminal output.
-   Copyright (C) 2019 Free Software Foundation, Inc.
+   Copyright (C) 2019-2020 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/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2002, 2005-2015, 2018-2019 Free Software Foundation,
+## Copyright (C) 2002, 2005-2015, 2018-2020 Free Software Foundation,
 ## Inc.
 
 ## This program is free software: you can redistribute it and/or modify

data/skeletons/bison.m4

@@ -2,7 +2,7 @@
 
 # Language-independent M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2015, 2018-2019 Free Software Foundation,
+# Copyright (C) 2002, 2004-2015, 2018-2020 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify
@@ -532,9 +532,9 @@ m4_define([b4_any_token_visible_if],
 # ----------------------------
 m4_define([b4_token_format],
 [b4_token_visible_if([$2],
-[m4_quote(m4_format([$1],
+[m4_format([[$1]],
-                     [b4_symbol([$2], [id])],
+           m4_quote(b4_symbol([$2], [id])),
-                     [b4_symbol([$2], b4_api_token_raw_if([[number]], [[user_number]]))]))])])
+           m4_quote(b4_symbol([$2], b4_api_token_raw_if([[number]], [[user_number]]))))])])
 
 
 ## ------- ##

data/skeletons/c++-skel.m4

@@ -2,7 +2,7 @@
 
 # C++ skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2015, 2018-2019 Free Software
+# Copyright (C) 2006-2007, 2009-2015, 2018-2020 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify

data/skeletons/c++.m4

@@ -2,7 +2,7 @@
 
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2020 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/skeletons/c-like.m4

@@ -2,7 +2,7 @@
 
 # Common code for C-like languages (C, C++, Java, etc.)
 
-# Copyright (C) 2012-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2012-2015, 2018-2020 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/skeletons/c-skel.m4

@@ -2,7 +2,7 @@
 
 # C skeleton dispatching for Bison.
 
-# Copyright (C) 2006-2007, 2009-2015, 2018-2019 Free Software
+# Copyright (C) 2006-2007, 2009-2015, 2018-2020 Free Software
 # Foundation, Inc.
 
 # This program is free software: you can redistribute it and/or modify

data/skeletons/c.m4

@@ -2,7 +2,7 @@
 
 # C M4 Macros for Bison.
 
-# Copyright (C) 2002, 2004-2015, 2018-2019 Free Software Foundation,
+# Copyright (C) 2002, 2004-2015, 2018-2020 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify

data/skeletons/d-skel.m4

@@ -2,7 +2,7 @@
 
 # D skeleton dispatching for Bison.
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/skeletons/d.m4

@@ -2,7 +2,7 @@
 
 # D language support for Bison
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/skeletons/glr.c

@@ -2,7 +2,7 @@
 
 # GLR skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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
@@ -198,7 +198,7 @@ b4_glr_cc_if([],
 [b4_defines_if(
 [b4_output_begin([b4_spec_header_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C],
-             [2002-2015, 2018-2019])[
+             [2002-2015, 2018-2020])[
 ]b4_cpp_guard_open([b4_spec_header_file])[
 ]b4_shared_declarations[
 ]b4_cpp_guard_close([b4_spec_header_file])[
@@ -212,7 +212,7 @@ b4_copyright([Skeleton interface for Bison GLR parsers in C],
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison GLR parsers in C],
-             [2002-2015, 2018-2019])[
+             [2002-2015, 2018-2020])[
 /* C GLR parser skeleton written by Paul Hilfinger.  */
 
 ]b4_disclaimer[
@@ -1985,7 +1985,8 @@ yyprocessOneStack (yyGLRStack* yystackp, ptrdiff_t yyk,
   while (yystackp->yytops.yystates[yyk] != YY_NULLPTR)
     {
       yyStateNum yystate = yystackp->yytops.yystates[yyk]->yylrState;
-      YY_DPRINTF ((stderr, "Stack %ld Entering state %d\n", yyk, yystate));
+      YY_DPRINTF ((stderr, "Stack %ld Entering state %d\n",
+                   YY_CAST (long, yyk), yystate));
 
       YY_ASSERT (yystate != YYFINAL);
 

data/skeletons/glr.cc

@@ -1,6 +1,6 @@
 # C++ GLR skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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
@@ -267,7 +267,8 @@ b4_percent_code_get([[requires]])[
 
 // On MacOS, PTRDIFF_MAX is defined as long long, which Clang's
 // -pedantic reports as being a C++11 extension.
-#if defined __APPLE__ && YY_CPLUSPLUS < 201103L && 4 <= __clang_major__
+#if defined __APPLE__ && YY_CPLUSPLUS < 201103L \
+    && defined __clang__ && 4 <= __clang_major__
 # pragma clang diagnostic ignored "-Wc++11-long-long"
 #endif
 
@@ -367,7 +368,7 @@ b4_percent_define_flag_if([[global_tokens_and_yystype]],
 b4_defines_if(
 [b4_output_begin([b4_spec_header_file])
 b4_copyright([Skeleton interface for Bison GLR parsers in C++],
-             [2002-2015, 2018-2019])[
+             [2002-2015, 2018-2020])[
 // C++ GLR parser skeleton written by Akim Demaille.
 
 ]b4_disclaimer[

data/skeletons/java-skel.m4

@@ -2,7 +2,7 @@
 
 # Java skeleton dispatching for Bison.
 
-# Copyright (C) 2007, 2009-2015, 2018-2019 Free Software Foundation,
+# Copyright (C) 2007, 2009-2015, 2018-2020 Free Software Foundation,
 # Inc.
 
 # This program is free software: you can redistribute it and/or modify

data/skeletons/java.m4

@@ -2,7 +2,7 @@
 
 # Java language support for Bison
 
-# Copyright (C) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2007-2015, 2018-2020 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
@@ -147,18 +147,20 @@ b4_symbol_foreach([b4_token_enum])])])
 # b4-case(ID, CODE)
 # -----------------
 # We need to fool Java's stupid unreachable code detection.
-m4_define([b4_case], [  case $1:
+m4_define([b4_case],
+[  case $1:
   if (yyn == $1)
     $2;
   break;
-    ])
+])
 
 # b4_predicate_case(LABEL, CONDITIONS)
 # ------------------------------------
-m4_define([b4_predicate_case], [  case $1:
+m4_define([b4_predicate_case],
+[  case $1:
      if (! ($2)) YYERROR;
     break;
-    ])
+])
 
 
 ## -------- ##
@@ -361,4 +363,4 @@ m4_define([b4_var_decl],
 # -----------------------
 # Expand to either an empty string or "throws THROWS".
 m4_define([b4_maybe_throws],
-          [m4_ifval($1, [throws $1])])
+          [m4_ifval($1, [ throws $1])])

data/skeletons/lalr1.cc

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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
@@ -23,6 +23,7 @@ m4_define([b4_value_type_setup_variant])
 # Check the value of %define parse.lac, where LAC stands for lookahead
 # correction.
 b4_percent_define_default([[parse.lac]], [[none]])
+b4_percent_define_check_values([[[[parse.lac]], [[full]], [[none]]]])
 b4_define_flag_if([lac])
 m4_define([b4_lac_flag],
           [m4_if(b4_percent_define_get([[parse.lac]]),
@@ -143,7 +144,7 @@ m4_ifdef([b4_lex_param], [, ]b4_lex_param))])])
 
 
 m4_pushdef([b4_copyright_years],
-           [2002-2015, 2018-2019])
+           [2002-2015, 2018-2020])
 
 m4_define([b4_parser_class],
           [b4_percent_define_get([[api.parser.class]])])
@@ -640,7 +641,7 @@ m4_if(b4_prefix, [yy], [],
     if (state == empty_state)
       return empty_symbol;
     else
-      return yystos_[state];
+      return yystos_[+state];
   }
 
   ]b4_parser_class[::stack_symbol_type::stack_symbol_type ()
@@ -866,7 +867,7 @@ b4_dollar_popdef])[]dnl
   `-----------*/
   yybackup:
     // Try to take a decision without lookahead.
-    yyn = yypact_[yystack_[0].state];
+    yyn = yypact_[+yystack_[0].state];
     if (yy_pact_value_is_default_ (yyn))
       goto yydefault;
 
@@ -921,7 +922,7 @@ b4_dollar_popdef])[]dnl
       --yyerrstatus_;
 
     // Shift the lookahead token.
-    yypush_ ("Shifting", static_cast<state_type> (yyn), YY_MOVE (yyla));]b4_lac_if([[
+    yypush_ ("Shifting", state_type (yyn), YY_MOVE (yyla));]b4_lac_if([[
     yy_lac_discard_ ("shift");]])[
     goto yynewstate;
 
@@ -930,7 +931,7 @@ b4_dollar_popdef])[]dnl
   | yydefault -- do the default action for the current state.  |
   `-----------------------------------------------------------*/
   yydefault:
-    yyn = yydefact_[yystack_[0].state];
+    yyn = yydefact_[+yystack_[0].state];
     if (yyn == 0)
       goto yyerrlab;
     goto yyreduce;
@@ -1057,7 +1058,7 @@ b4_dollar_popdef])[]dnl
       stack_symbol_type error_token;
       for (;;)
         {
-          yyn = yypact_[yystack_[0].state];
+          yyn = yypact_[+yystack_[0].state];
           if (!yy_pact_value_is_default_ (yyn))
             {
               yyn += yy_error_token_;
@@ -1084,7 +1085,7 @@ b4_dollar_popdef])[]dnl
 
       // Shift the error token.]b4_lac_if([[
       yy_lac_discard_ ("error recovery");]])[
-      error_token.state = static_cast<state_type> (yyn);
+      error_token.state = state_type (yyn);
       yypush_ ("Shifting", YY_MOVE (error_token));
     }
     goto yynewstate;
@@ -1166,13 +1167,13 @@ b4_dollar_popdef])[]dnl
         state_type top_state = (yylac_stack_.empty ()
                                 ? yystack_[lac_top].state
                                 : yylac_stack_.back ());
-        int yyrule = yypact_[top_state];
+        int yyrule = yypact_[+top_state];
         if (yy_pact_value_is_default_ (yyrule)
             || (yyrule += yytoken) < 0 || yylast_ < yyrule
             || yycheck_[yyrule] != yytoken)
           {
             // Use the default action.
-            yyrule = yydefact_[top_state];
+            yyrule = yydefact_[+top_state];
             if (yyrule == 0)
               {
                 YYCDEBUG << " Err\n";
@@ -1345,7 +1346,7 @@ b4_error_verbose_if([state_type yystate, const symbol_type& yyla],
           yy_lac_check_ (yytoken);
 #endif]])[
 
-        int yyn = yypact_[yystate];
+        int yyn = yypact_[+yystate];
         if (!yy_pact_value_is_default_ (yyn))
           {]b4_lac_if([[
             for (int yyx = 0; yyx < yyntokens_; ++yyx)

data/skeletons/lalr1.d

@@ -1,6 +1,6 @@
 # D skeleton for Bison -*- autoconf -*-
 
-# Copyright (C) 2007-2012, 2019 Free Software Foundation, Inc.
+# Copyright (C) 2007-2012, 2019-2020 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
@@ -20,7 +20,7 @@ m4_include(b4_skeletonsdir/[d.m4])
 
 b4_output_begin([b4_parser_file_name])
 b4_copyright([Skeleton implementation for Bison LALR(1) parsers in D],
-             [2007-2012, 2019])[
+             [2007-2012, 2019-2020])[
 
 ]b4_percent_define_ifdef([package], [module b4_percent_define_get([package]);
 ])[

data/skeletons/lalr1.java

@@ -1,6 +1,6 @@
 # Java skeleton for Bison                           -*- autoconf -*-
 
-# Copyright (C) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2007-2015, 2018-2020 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
@@ -65,8 +65,8 @@ m4_define([b4_define_state],[[
     int label = YYNEWSTATE;
 
     /* Error handling.  */
-    int yynerrs_ = 0;
+    int yynerrs_ = 0;]b4_locations_if([[
-    ]b4_locations_if([[/* The location where the error started.  */
+    /* The location where the error started.  */
     ]b4_location_type[ yyerrloc = null;
 
     /* Location. */
@@ -78,7 +78,7 @@ m4_define([b4_define_state],[[
 
 ]b4_output_begin([b4_parser_file_name])[
 ]b4_copyright([Skeleton implementation for Bison LALR(1) parsers in Java],
-              [2007-2015, 2018-2019])[
+              [2007-2015, 2018-2020])[
 ]b4_percent_define_ifdef([package], [package b4_percent_define_get([package]);[
 ]])[
 ]b4_user_pre_prologue[
@@ -182,7 +182,7 @@ b4_locations_if([[
 
 ]b4_token_enums[
 
-    ]b4_locations_if([[/**
+]b4_locations_if([[/**
      * Method to retrieve the beginning position of the last scanned token.
      * @@return the position at which the last scanned token starts.
      */
@@ -206,13 +206,13 @@ b4_locations_if([[
      * ]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])[;
+    int yylex ()]b4_maybe_throws([b4_lex_throws])[;
 
     /**
      * Entry point for error reporting.  Emits an error
      * ]b4_locations_if([referring to the given location ])[in a user-defined way.
      *
-     * ]b4_locations_if([[@@param loc The location of the element to which the
+     *]b4_locations_if([[ @@param loc The location of the element to which the
      *                error message is related]])[
      * @@param msg The string for the error message.
      */
@@ -224,22 +224,23 @@ b4_locations_if([[
 ]b4_percent_code_get([[lexer]])[
   }
 
-  ]])[/**
+]])[
+  /**
    * The object doing lexical analysis for us.
    */
   private Lexer yylexer;
 
-  ]b4_parse_param_vars[
+]b4_parse_param_vars[
 
 ]b4_lexer_if([[
   /**
    * Instantiates the Bison-generated parser.
    */
-  public ]b4_parser_class (b4_parse_param_decl([b4_lex_param_decl])[) ]b4_maybe_throws([b4_init_throws])[
+  public ]b4_parser_class (b4_parse_param_decl([b4_lex_param_decl])[)]b4_maybe_throws([b4_init_throws])[
   {
-    ]b4_percent_code_get([[init]])[
+]b4_percent_code_get([[init]])[
     this.yylexer = new YYLexer(]b4_lex_param_call[);
-    ]b4_parse_param_cons[
+]b4_parse_param_cons[
   }
 ]])[
 
@@ -247,11 +248,11 @@ b4_locations_if([[
    * Instantiates the Bison-generated parser.
    * @@param yylexer The scanner that will supply tokens to the parser.
    */
-  ]b4_lexer_if([[protected]], [[public]]) b4_parser_class[ (]b4_parse_param_decl([[Lexer yylexer]])[) ]b4_maybe_throws([b4_init_throws])[
+  ]b4_lexer_if([[protected]], [[public]]) b4_parser_class[ (]b4_parse_param_decl([[Lexer yylexer]])[)]b4_maybe_throws([b4_init_throws])[
   {
-    ]b4_percent_code_get([[init]])[
+]b4_percent_code_get([[init]])[
     this.yylexer = yylexer;
-    ]b4_parse_param_cons[
+]b4_parse_param_cons[
   }
 
 ]b4_parse_trace_if([[
@@ -320,8 +321,8 @@ b4_locations_if([[
   }]])[
 
   private final class YYStack {
-    private int[] stateStack = new int[16];
+    private int[] stateStack = new int[16];]b4_locations_if([[
-    ]b4_locations_if([[private ]b4_location_type[[] locStack = new ]b4_location_type[[16];]])[
+    private ]b4_location_type[[] locStack = new ]b4_location_type[[16];]])[
     private ]b4_yystype[[] valueStack = new ]b4_yystype[[16];
 
     public int size = 16;
@@ -334,8 +335,7 @@ b4_locations_if([[
         {
           int[] newStateStack = new int[size * 2];
           System.arraycopy (stateStack, 0, newStateStack, 0, height);
-          stateStack = newStateStack;
+          stateStack = newStateStack;]b4_locations_if([[
-          ]b4_locations_if([[
           ]b4_location_type[[] newLocStack = new ]b4_location_type[[size * 2];
           System.arraycopy (locStack, 0, newLocStack, 0, height);
           locStack = newLocStack;]])
@@ -347,8 +347,8 @@ b4_locations_if([[
           size *= 2;
         }
 
-      stateStack[height] = state;
+      stateStack[height] = state;]b4_locations_if([[
-      ]b4_locations_if([[locStack[height] = loc;]])[
+      locStack[height] = loc;]])[
       valueStack[height] = value;
     }
 
@@ -359,8 +359,8 @@ b4_locations_if([[
     public final void pop (int num) {
       // Avoid memory leaks... garbage collection is a white lie!
       if (0 < num) {
-        java.util.Arrays.fill (valueStack, height - num + 1, height + 1, null);
+        java.util.Arrays.fill (valueStack, height - num + 1, height + 1, null);]b4_locations_if([[
-        ]b4_locations_if([[java.util.Arrays.fill (locStack, height - num + 1, height + 1, null);]])[
+        java.util.Arrays.fill (locStack, height - num + 1, height + 1, null);]])[
       }
       height -= num;
     }
@@ -368,8 +368,9 @@ b4_locations_if([[
     public final int stateAt (int i) {
       return stateStack[height - i];
     }
+]b4_locations_if([[
 
-    ]b4_locations_if([[public final ]b4_location_type[ locationAt (int i) {
+    public final ]b4_location_type[ locationAt (int i) {
       return locStack[height - i];
     }
 
@@ -452,7 +453,7 @@ b4_locations_if([[
       return yydefgoto_[yysym - yyntokens_];
   }
 
-  private int yyaction (int yyn, YYStack yystack, int yylen) ]b4_maybe_throws([b4_throws])[
+  private int yyaction (int yyn, YYStack yystack, int yylen)]b4_maybe_throws([b4_throws])[
   {
     /* If YYLEN is nonzero, implement the default value of the action:
        '$$ = $1'.  Otherwise, use the top of the stack.
@@ -460,8 +461,8 @@ b4_locations_if([[
        Otherwise, the following line sets YYVAL to garbage.
        This behavior is undocumented and Bison
        users should not rely upon it.  */
-    ]b4_yystype[ yyval = (0 < yylen) ? yystack.valueAt (yylen - 1) : yystack.valueAt (0);
+    ]b4_yystype[ yyval = (0 < yylen) ? yystack.valueAt (yylen - 1) : yystack.valueAt (0);]b4_locations_if([[
-    ]b4_locations_if([b4_location_type[ yyloc = yylloc (yystack, yylen);]])[]b4_parse_trace_if([[
+    ]b4_location_type[ yyloc = yylloc (yystack, yylen);]])[]b4_parse_trace_if([[
 
     yyReducePrint (yyn, yystack);]])[
 
@@ -541,29 +542,28 @@ b4_locations_if([[
    * @@return <tt>true</tt> if the parsing succeeds.  Note that this does not
    *          imply that there were no syntax errors.
    */
-  public boolean parse () ]b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])[]])[
+  public boolean parse ()]b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])[]])[
 ]b4_push_if([
   /**
    * Push Parse input from external lexer
    *
    * @@param yylextoken current token
-   * @@param yylexval current lval
+   * @@param yylexval current lval]b4_locations_if([[
-]b4_locations_if([   * @@param yylexloc current position])[
+   * @@param yylexloc current position]])[
    *
    * @@return <tt>YYACCEPT, YYABORT, YYPUSH_MORE</tt>
    */
-  public int push_parse (int yylextoken, b4_yystype yylexval[]b4_locations_if([, b4_location_type yylexloc]))
+  public int push_parse (int yylextoken, b4_yystype yylexval[]b4_locations_if([, b4_location_type yylexloc]))b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])])[
-      b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])])[
+  {]b4_locations_if([[
-  {
+    /* @@$.  */
-    ]b4_locations_if([/* @@$.  */
+    ]b4_location_type[ yyloc;]])[
-    b4_location_type yyloc;])[
 ]b4_push_if([],[[
 ]b4_define_state[]b4_parse_trace_if([[
     yycdebug ("Starting parse\n");]])[
     yyerrstatus_ = 0;
 
     /* Initialize the stack.  */
-    yystack.push (yystate, yylval ]b4_locations_if([, yylloc])[);
+    yystack.push (yystate, yylval]b4_locations_if([, yylloc])[);
 ]m4_ifdef([b4_initial_action], [
 b4_dollar_pushdef([yylval], [], [], [yylloc])dnl
     b4_user_initial_action
@@ -706,7 +706,8 @@ b4_dollar_popdef[]dnl
             yyerror (]b4_locations_if([yylloc, ])[yysyntax_error (yystate, yytoken));
           }
 
-        ]b4_locations_if([yyerrloc = yylloc;])[
+]b4_locations_if([[
+        yyerrloc = yylloc;]])[
         if (yyerrstatus_ == 3)
           {
             /* If just tried and failed to reuse lookahead token after an
@@ -730,8 +731,8 @@ b4_dollar_popdef[]dnl
       /*-------------------------------------------------.
       | errorlab -- error raised explicitly by YYERROR.  |
       `-------------------------------------------------*/
-      case YYERROR:
+      case YYERROR:]b4_locations_if([[
-        ]b4_locations_if([yyerrloc = yystack.locationAt (yylen - 1);])[
+        yyerrloc = yystack.locationAt (yylen - 1);]])[
         /* Do not reclaim the symbols of the rule which action triggered
            this YYERROR.  */
         yystack.pop (yylen);
@@ -765,7 +766,8 @@ b4_dollar_popdef[]dnl
             if (yystack.height == 0)
               ]b4_push_if([{label = YYABORT; break;}],[return false;])[
 
-            ]b4_locations_if([yyerrloc = yystack.locationAt (0);])[
+]b4_locations_if([[
+            yyerrloc = yystack.locationAt (0);]])[
             yystack.pop ();
             yystate = yystack.stateAt (0);]b4_parse_trace_if([[
             if (0 < yydebug)
@@ -776,12 +778,12 @@ b4_dollar_popdef[]dnl
             /* Leave the switch.  */
             break;
 
-]b4_locations_if([
+]b4_locations_if([[
         /* Muck with the stack to setup for yylloc.  */
         yystack.push (0, null, yylloc);
         yystack.push (0, null, yyerrloc);
         yyloc = yylloc (yystack, 2);
-        yystack.pop (2);])[
+        yystack.pop (2);]])[
 
         /* Shift the error token.  */]b4_parse_trace_if([[
         yySymbolPrint ("Shifting", yystos_[yyn],
@@ -823,10 +825,10 @@ b4_dollar_popdef[]dnl
     this.label = YYNEWSTATE;
 
     /* Error handling.  */
-    this.yynerrs_ = 0;
+    this.yynerrs_ = 0;]b4_locations_if([[
-    ]b4_locations_if([/* The location where the error started.  */
+    /* The location where the error started.  */
     this.yyerrloc = null;
-    this.yylloc = new b4_location_type (null, null);])[
+    this.yylloc = new ]b4_location_type[ (null, null);]])[
 
     /* Semantic value of the lookahead.  */
     this.yylval = null;
@@ -846,8 +848,7 @@ b4_dollar_popdef[]dnl
    *
    * @@return <tt>YYACCEPT, YYABORT, YYPUSH_MORE</tt>
    */
-  public int push_parse (int yylextoken, b4_yystype yylexval, b4_position_type yylexpos)
+  public int push_parse (int yylextoken, b4_yystype yylexval, b4_position_type yylexpos)b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])
-      b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])
   {
     return push_parse (yylextoken, yylexval, new b4_location_type (yylexpos));
   }
@@ -862,7 +863,7 @@ b4_dollar_popdef[]dnl
    * @@return <tt>true</tt> if the parsing succeeds.  Note that this does not
    *          imply that there were no syntax errors.
    */
-  public boolean parse () ]b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])[
+  public boolean parse ()]b4_maybe_throws([b4_list2([b4_lex_throws], [b4_throws])])[
   {
     if (yylexer == null)
       throw new NullPointerException("Null Lexer");
@@ -872,9 +873,9 @@ b4_dollar_popdef[]dnl
       ]b4_yystype[ lval = yylexer.getLVal();
 ]b4_locations_if([dnl
       b4_location_type yyloc = new b4_location_type (yylexer.getStartPos (),
-                                            yylexer.getEndPos ());])[
+                                            yylexer.getEndPos ());])[]b4_locations_if([[
-      ]b4_locations_if([status = push_parse(token,lval,yyloc);],[
+      status = push_parse(token,lval,yyloc);]], [[
-      status = push_parse(token,lval);])[
+      status = push_parse(token,lval);]])[
     } while (status == YYPUSH_MORE);
     return (status == YYACCEPT);
   }

data/skeletons/location.cc

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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
@@ -16,7 +16,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 m4_pushdef([b4_copyright_years],
-           [2002-2015, 2018-2019])
+           [2002-2015, 2018-2020])
 
 
 # b4_position_file

data/skeletons/stack.hh

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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/skeletons/variant.hh

@@ -1,6 +1,6 @@
 # C++ skeleton for Bison
 
-# Copyright (C) 2002-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2002-2015, 2018-2020 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/skeletons/yacc.c

@@ -1,11 +1,11 @@
 #                                                            -*- C -*-
 # Yacc compatible skeleton for Bison
 
-# Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software
+# Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2020 Free Software
 # Foundation, Inc.
 
 m4_pushdef([b4_copyright_years],
-           [1984, 1989-1990, 2000-2015, 2018-2019])
+           [1984, 1989-1990, 2000-2015, 2018-2020])
 
 # 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
@@ -755,7 +755,7 @@ do {                                                            \
     {
       YYFPRINTF (stderr, "   $%d = ", yyi + 1);
       yy_symbol_print (stderr,
-                       yystos[yyssp[yyi + 1 - yynrhs]],
+                       yystos[+yyssp[yyi + 1 - yynrhs]],
                        &]b4_rhs_value(yynrhs, yyi + 1)[
                        ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
                        b4_user_args[);
@@ -955,12 +955,12 @@ yy_lac (yy_state_t *yyesa, yy_state_t **yyes,
     }
   while (1)
     {
-      int yyrule = yypact[*yyesp];
+      int yyrule = yypact[+*yyesp];
       if (yypact_value_is_default (yyrule)
           || (yyrule += yytoken) < 0 || YYLAST < yyrule
           || yycheck[yyrule] != yytoken)
         {
-          yyrule = yydefact[*yyesp];
+          yyrule = yydefact[+*yyesp];
           if (yyrule == 0)
             {
               YYDPRINTF ((stderr, " Err\n"));
@@ -1184,7 +1184,7 @@ yysyntax_error (YYPTRDIFF_T *yymsg_alloc, char **yymsg,
   */
   if (yytoken != YYEMPTY)
     {
-      int yyn = yypact[*yyssp];
+      int yyn = yypact[+*yyssp];
       YYPTRDIFF_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
       yysize = yysize0;]b4_lac_if([[
       YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
@@ -1940,7 +1940,7 @@ yyreturn:
   while (yyssp != yyss)
     {
       yydestruct ("Cleanup: popping",
-                  yystos[*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
+                  yystos[+*yyssp], yyvsp]b4_locations_if([, yylsp])[]b4_user_args[);
       YYPOPSTACK (1);
     }
 #ifndef yyoverflow

data/xslt/bison.xsl

@@ -3,7 +3,7 @@
 <!--
     bison.xsl - common templates for Bison XSLT.
 
-    Copyright (C) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+    Copyright (C) 2007-2015, 2018-2020 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) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+    Copyright (C) 2007-2015, 2018-2020 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

data/xslt/xml2text.xsl

@@ -3,7 +3,7 @@
 <!--
     xml2text.xsl - transform Bison XML Report into plain text.
 
-    Copyright (C) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+    Copyright (C) 2007-2015, 2018-2020 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) 2007-2015, 2018-2019 Free Software Foundation, Inc.
+    Copyright (C) 2007-2015, 2018-2020 Free Software Foundation, Inc.
 
     This file is part of Bison, the GNU Compiler Compiler.
 

doc/.gitignore

@@ -16,6 +16,7 @@
 /bison.help
 /bison.html
 /bison.info
+/bison.info.bak
 /bison.log
 /bison.pdf
 /bison.ps

doc/bison.texi

@@ -79,7 +79,7 @@
 This manual (@value{UPDATED}) is for GNU Bison (version @value{VERSION}),
 the GNU parser generator.
 
-Copyright @copyright{} 1988-1993, 1995, 1998-2015, 2018-2019 Free
+Copyright @copyright{} 1988--1993, 1995, 1998--2015, 2018--2020 Free
 Software Foundation, Inc.
 
 @quotation
@@ -5841,7 +5841,10 @@ states and what is done for each type of lookahead token in that state.
 
 @deffn {Directive} %yacc
 Pretend the option @option{--yacc} was given, i.e., imitate Yacc, including
-its naming conventions.  @xref{Tuning the Parser}, for more.
+its naming conventions.  Only makes sense with the @file{yacc.c}
+skeleton. @xref{Tuning the Parser}, for more.
+
+Of course @code{%yacc} is a Bison extension@dots{}
 @end deffn
 
 
@@ -9971,10 +9974,30 @@ When a Bison grammar compiles properly but parses ``incorrectly'', the
 
 @node Enabling Traces
 @subsection  Enabling Traces
-There are several means to enable compilation of trace facilities:
+There are several means to enable compilation of trace facilities, in
+decreasing order of preference:
 
 @table @asis
-@item the macro @code{YYDEBUG}
+@item the variable @samp{parse.trace}
+@findex %define parse.trace
+Add the @samp{%define parse.trace} directive (@pxref{%define
+Summary,,parse.trace}), or pass the @option{-Dparse.trace} option
+(@pxref{Tuning the Parser}).  This is a Bison extension.  Unless POSIX and
+Yacc portability matter to you, this is the preferred solution.
+
+@item the option @option{-t} (POSIX Yacc compliant)
+@itemx the option @option{--debug} (Bison extension)
+Use the @samp{-t} option when you run Bison (@pxref{Invocation, ,Invoking
+Bison}).  With @samp{%define api.prefix @{c@}}, it defines @code{CDEBUG} to
+1, otherwise it defines @code{YYDEBUG} to 1.
+
+@item the directive @samp{%debug} (deprecated)
+@findex %debug
+Add the @code{%debug} directive (@pxref{Decl Summary, ,Bison Declaration
+Summary}).  This Bison extension is maintained for backward compatibility
+with previous versions of Bison; use @code{%define parse.trace} instead.
+
+@item the macro @code{YYDEBUG} (C/C++ only)
 @findex YYDEBUG
 Define the macro @code{YYDEBUG} to a nonzero value when you compile the
 parser.  This is compliant with POSIX Yacc.  You could use
@@ -9984,87 +10007,66 @@ Prologue}).
 
 If the @code{%define} variable @code{api.prefix} is used (@pxref{Multiple
 Parsers, ,Multiple Parsers in the Same Program}), for instance @samp{%define
-api.prefix x}, then if @code{CDEBUG} is defined, its value controls the
+api.prefix @{c@}}, then if @code{CDEBUG} is defined, its value controls the
 tracing feature (enabled if and only if nonzero); otherwise tracing is
 enabled if and only if @code{YYDEBUG} is nonzero.
-
-@item the option @option{-t} (POSIX Yacc compliant)
-@itemx the option @option{--debug} (Bison extension)
-Use the @samp{-t} option when you run Bison (@pxref{Invocation, ,Invoking
-Bison}).  With @samp{%define api.prefix @{c@}}, it defines @code{CDEBUG} to 1,
-otherwise it defines @code{YYDEBUG} to 1.
-
-@item the directive @samp{%debug}
-@findex %debug
-Add the @code{%debug} directive (@pxref{Decl Summary, ,Bison Declaration
-Summary}).  This Bison extension is maintained for backward
-compatibility with previous versions of Bison.
-
-@item the variable @samp{parse.trace}
-@findex %define parse.trace
-Add the @samp{%define parse.trace} directive (@pxref{%define
-Summary,,parse.trace}), or pass the @option{-Dparse.trace} option
-(@pxref{Tuning the Parser}).  This is a Bison extension, which is especially
-useful for languages that don't use a preprocessor.  Unless POSIX and Yacc
-portability matter to you, this is the preferred solution.
 @end table
 
 We suggest that you always enable the trace option so that debugging is
 always possible.
 
 @findex YYFPRINTF
-The trace facility outputs messages with macro calls of the form
+In C the trace facility outputs messages with macro calls of the form
-@code{YYFPRINTF (stderr, @var{format}, @var{args})} where
+@code{YYFPRINTF (stderr, @var{format}, @var{args})} where @var{format} and
-@var{format} and @var{args} are the usual @code{printf} format and variadic
+@var{args} are the usual @code{printf} format and variadic arguments.  If
-arguments.  If you define @code{YYDEBUG} to a nonzero value but do not
+you define @code{YYDEBUG} to a nonzero value but do not define
-define @code{YYFPRINTF}, @code{<stdio.h>} is automatically included
+@code{YYFPRINTF}, @code{<stdio.h>} is automatically included and
-and @code{YYFPRINTF} is defined to @code{fprintf}.
+@code{YYFPRINTF} is defined to @code{fprintf}.
 
-Once you have compiled the program with trace facilities, the way to
+Once you have compiled the program with trace facilities, the way to request
-request a trace is to store a nonzero value in the variable @code{yydebug}.
+a trace is to store a nonzero value in the variable @code{yydebug}.  You can
-You can do this by making the C code do it (in @code{main}, perhaps), or
+do this by making the C code do it (in @code{main}, perhaps), or you can
-you can alter the value with a C debugger.
+alter the value with a C debugger.
 
-Each step taken by the parser when @code{yydebug} is nonzero produces a
+Each step taken by the parser when @code{yydebug} is nonzero produces a line
-line or two of trace information, written on @code{stderr}.  The trace
+or two of trace information, written on @code{stderr}.  The trace messages
-messages tell you these things:
+tell you these things:
 
 @itemize @bullet
 @item
 Each time the parser calls @code{yylex}, what kind of token was read.
 
 @item
-Each time a token is shifted, the depth and complete contents of the
+Each time a token is shifted, the depth and complete contents of the state
-state stack (@pxref{Parser States}).
+stack (@pxref{Parser States}).
 
 @item
-Each time a rule is reduced, which rule it is, and the complete contents
+Each time a rule is reduced, which rule it is, and the complete contents of
-of the state stack afterward.
+the state stack afterward.
 @end itemize
 
 To make sense of this information, it helps to refer to the automaton
-description file (@pxref{Understanding, ,Understanding Your Parser}).
+description file (@pxref{Understanding, ,Understanding Your Parser}).  This
-This file shows the meaning of each state in terms of
+file shows the meaning of each state in terms of positions in various rules,
-positions in various rules, and also what each state will do with each
+and also what each state will do with each possible input token.  As you
-possible input token.  As you read the successive trace messages, you
+read the successive trace messages, you can see that the parser is
-can see that the parser is functioning according to its specification in
+functioning according to its specification in the listing file.  Eventually
-the listing file.  Eventually you will arrive at the place where
+you will arrive at the place where something undesirable happens, and you
-something undesirable happens, and you will see which parts of the
+will see which parts of the grammar are to blame.
-grammar are to blame.
 
 The parser implementation file is a C/C++/Java program and you can use
 debuggers on it, but it's not easy to interpret what it is doing.  The
-parser function is a finite-state machine interpreter, and aside from
+parser function is a finite-state machine interpreter, and aside from the
-the actions it executes the same code over and over.  Only the values
+actions it executes the same code over and over.  Only the values of
-of variables show where in the grammar it is working.
+variables show where in the grammar it is working.
 
 @node Mfcalc Traces
 @subsection Enabling Debug Traces for @code{mfcalc}
 
 The debugging information normally gives the token type of each token read,
 but not its semantic value.  The @code{%printer} directive allows specify
-how semantic values are reported, see @ref{Printer Decl, , Printing
+how semantic values are reported, see @ref{Printer Decl, , Printing Semantic
-Semantic Values}.
+Values}.
 
 As a demonstration of @code{%printer}, consider the multi-function
 calculator, @code{mfcalc} (@pxref{Multi-function Calc}).  To enable run-time
@@ -10229,7 +10231,7 @@ Cleanup: popping nterm input ()
 @subsection The @code{YYPRINT} Macro
 @findex YYPRINT
 
-The @code{%printer} directive was introduced in Bison 1.50 (Novembre 2002).
+The @code{%printer} directive was introduced in Bison 1.50 (November 2002).
 Before then, @code{YYPRINT} provided a similar feature, but only for
 terminal symbols and only with the @file{yacc.c} skeleton.
 
@@ -10858,11 +10860,10 @@ different diagnostics to be generated (it implies @option{-Wyacc}), and may
 change behavior in other minor ways.  Most importantly, imitate Yacc's
 output file name conventions, so that the parser implementation file is
 called @file{y.tab.c}, and the other outputs are called @file{y.output} and
-@file{y.tab.h}.  Also, if generating a deterministic parser in C, generate
+@file{y.tab.h}.  Also, generate @code{#define} statements in addition to an
-@code{#define} statements in addition to an @code{enum} to associate token
+@code{enum} to associate token numbers with token names.  Thus, the
-numbers with token names.  Thus, the following shell script can substitute
+following shell script can substitute for Yacc, and the Bison distribution
-for Yacc, and the Bison distribution contains such a script for
+contains such a script for compatibility with POSIX:
-compatibility with POSIX:
 
 @example
 #! /bin/sh
@@ -10870,9 +10871,9 @@ bison -y "$@@"
 @end example
 
 The @option{-y}/@option{--yacc} option is intended for use with traditional
-Yacc grammars.  If your grammar uses Bison extensions like
+Yacc grammars.  This option only makes sense for the default C skeleton,
-@samp{%glr-parser}, Bison might not be Yacc-compatible even if this option
+@file{yacc.c}.  If your grammar uses Bison extensions Bison cannot be
-is specified.
+Yacc-compatible, even if this option is specified.
 @end table
 
 @node Output Files
@@ -14169,7 +14170,7 @@ it.  Using @samp{%define parse.error verbose} is preferred
 @end deffn
 
 @deffn {Macro} YYFPRINTF
-Macro used to output run-time traces.
+Macro used to output run-time traces in C.
 @xref{Enabling Traces}.
 @end deffn
 
@@ -14605,7 +14606,7 @@ London, Department of Computer Science, TR-00-12 (December 2000).
 @c LocalWords: strncmp intval tindex lvalp locp llocp typealt YYBACKUP subrange
 @c LocalWords: YYEMPTY YYEOF YYRECOVERING yyclearin GE def UMINUS maybeword loc
 @c LocalWords: Johnstone Shamsa Sadaf Hussain Tomita TR uref YYMAXDEPTH inline
-@c LocalWords: YYINITDEPTH stmts ref initdcl maybeasm notype Lookahead
+@c LocalWords: YYINITDEPTH stmts ref initdcl maybeasm notype Lookahead ctx
 @c LocalWords: hexflag STR exdent itemset asis DYYDEBUG YYFPRINTF args Autoconf
 @c LocalWords: ypp yxx itemx tex leaderfill Troubleshouting sqrt Graphviz
 @c LocalWords: hbox hss hfill tt ly yyin fopen fclose ofirst gcc ll lookahead
@@ -14649,10 +14650,12 @@ London, Department of Computer Science, TR-00-12 (December 2000).
 @c LocalWords: Relocatability exprs fixit Wyacc parseable fixits ffixit svg
 @c LocalWords: DNDEBUG cstring Wzero workalike POPL workalikes byacc UCB
 @c LocalWords: Penello's Penello Byson Byson's Corbett's CSD TOPLAS PDP
-@c LocalWords: Beazley's goyacc ocamlyacc SIGACT SIGPLAN colorWarning
+@c LocalWords: Beazley's goyacc ocamlyacc SIGACT SIGPLAN colorWarning exVal
 @c LocalWords: setcolor rgbError colorError rgbNotice colorNotice derror
 @c LocalWords: colorOff maincolor inlineraw darkviolet darkcyan dwarning
-@c LocalWords: dnotice copyable stdint ptrdiff bufsize
+@c LocalWords: dnotice copyable stdint ptrdiff bufsize yyreport invariants
+@c LocalWords: xrefautomaticsectiontitle yysyntax yysymbol ARGMAX cond
+@c LocalWords: Wdangling
 
 @c Local Variables:
 @c ispell-dictionary: "american"

doc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2001-2003, 2005-2015, 2018-2019 Free Software
+## Copyright (C) 2001-2003, 2005-2015, 2018-2020 Free Software
 ## Foundation, Inc.
 
 ## This program is free software: you can redistribute it and/or modify

doc/refcard.tex

@@ -19,7 +19,7 @@
 \def\finalout{\overfullrule=0pt}
 %\finalout
 
-% Copyright (c) 1998, 2001, 2009-2015, 2018-2019 Free Software
+% Copyright (c) 1998, 2001, 2009--2015, 2018--2020 Free Software
 % Foundation, Inc.
 %
 % This file is part of Bison.

etc/README

@@ -16,7 +16,7 @@ straightforward use of _build/src/bison would.)
 
 --
 
-Copyright (C) 2006, 2009-2015, 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2006, 2009-2015, 2018-2020 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, 2008-2015, 2018-2019 Free Software Foundation,
+# Copyright (C) 2006, 2008-2015, 2018-2020 Free Software Foundation,
 # Inc.
 #
 # This file is part of Bison, the GNU Compiler Compiler.

etc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2006, 2008-2015, 2018-2019 Free Software Foundation,
+## Copyright (C) 2006, 2008-2015, 2018-2020 Free Software Foundation,
 ## Inc.
 
 ## This program is free software: you can redistribute it and/or modify

examples/README.md

@@ -17,7 +17,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or

examples/c++/README.md

@@ -46,7 +46,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or

examples/c++/calc++/README.md

@@ -36,7 +36,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

examples/c++/calc++/calc++.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2005-2015, 2018-2020 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/c++/calc++/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2019 Free Software
+## Copyright (C) 2005-2006, 2008-2015, 2018-2020 Free Software
 ## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify

examples/c++/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2018-2020 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/c++/variant-11.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/c++/variant-11.yy

@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2008-2015, 2018-2019 Free Software Foundation, Inc.
+  Copyright (C) 2008-2015, 2018-2020 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/c++/variant.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/c++/variant.yy

@@ -1,5 +1,5 @@
 /*
-  Copyright (C) 2008-2015, 2018-2019 Free Software Foundation, Inc.
+  Copyright (C) 2008-2015, 2018-2020 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/c/README.md

@@ -45,7 +45,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or

examples/c/calc/README.md

@@ -9,7 +9,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2019 Free Software Foundation, Inc.
+Copyright (C) 2019-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

examples/c/calc/calc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2019 Free Software Foundation, Inc.
+# Copyright (C) 2019-2020 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/c/calc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2019 Free Software Foundation, Inc.
+## Copyright (C) 2019-2020 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/c/lexcalc/README.md

@@ -9,7 +9,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

examples/c/lexcalc/lexcalc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/c/lexcalc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2018-2020 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/c/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2018-2020 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/c/mfcalc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2019 Free Software
+## Copyright (C) 2005-2006, 2008-2015, 2018-2020 Free Software
 ## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify

examples/c/mfcalc/mfcalc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2005-2015, 2018-2020 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/c/reccalc/README.md

@@ -26,7 +26,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.
 

examples/c/reccalc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2019 Free Software Foundation, Inc.
+## Copyright (C) 2019-2020 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/c/reccalc/reccalc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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
@@ -15,6 +15,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+seq 0 >/dev/null || exit 77
+
 cat >input <<EOF
 1+2*3
 EOF

examples/c/rpcalc/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2005-2006, 2008-2015, 2018-2019 Free Software
+## Copyright (C) 2005-2006, 2008-2015, 2018-2020 Free Software
 ## Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify

examples/c/rpcalc/rpcalc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2005-2015, 2018-2020 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/d/README.md

@@ -15,7 +15,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or

examples/d/calc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/d/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2018-2020 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by

examples/extexi

@@ -3,7 +3,7 @@
 
 # This file is part of GNU Bison
 
-# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2015, 2018-2019 Free
+# Copyright (C) 1992, 2000-2001, 2005-2006, 2009-2015, 2018-2020 Free
 # Software Foundation, Inc.
 #
 # This program is free software: you can redistribute it and/or modify

examples/java/Calc.test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2018-2020 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/java/README.md

@@ -16,7 +16,7 @@ fill-column: 76
 ispell-dictionary: "american"
 End:
 
-Copyright (C) 2018-2019 Free Software Foundation, Inc.
+Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or

examples/java/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2018-2020 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/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2005, 2008-2015, 2018-2019 Free Software Foundation,
+## Copyright (C) 2005, 2008-2015, 2018-2020 Free Software Foundation,
 ## Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify

examples/test

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-# Copyright (C) 2005-2015, 2018-2019 Free Software Foundation, Inc.
+# Copyright (C) 2005-2015, 2018-2020 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
@@ -31,18 +31,18 @@ exit=true
 cwd=$(pwd)
 
 # The exercised program.
-for p in "$cwd/examples/$medir/$me"
+abs_medir=$cwd/examples/$medir
-do
+if test -x "$abs_medir/$me"; then
-    if test -x "$p"; then
+    prog ()
-        prog=$p
+    {
-        break
+        "$abs_medir/$me" "$@"
-    elif test -f "$p.class"; then
+    }
-        pwd
+elif test -f "$abs_medir/$me.class"; then
-        prog="$SHELL $cwd/javaexec.sh -cp $(dirname $p) $(basename $p)"
+    prog ()
-        break
+    {
-    fi
+        "$SHELL" "$cwd/javaexec.sh" -cp "$abs_medir" "$me" "$@"
-done
+    }
-if test x"$prog" = x; then
+else
     echo "$me: ERROR: cannot find program to exercise in:"
     echo "$me: ERROR:   $cwd/examples/$medir/$me"
     exit 1
@@ -55,7 +55,7 @@ cleanup ()
 {
   status=$?
   if test -z "$DEBUG"; then
-     cd $cwd
+     cd "$cwd"
      rm -rf $$.dir
   fi
   exit $status
@@ -82,7 +82,7 @@ run ()
   shift
   # Effective exit status.
   sta_eff=0
-  $prog "$@" - <input >out_eff 2>err_eff || sta_eff=$?
+  prog "$@" - <input >out_eff 2>err_eff || sta_eff=$?
   # Combine effective output and error streams.
   out_eff=$(cat out_eff && $noerr || sed -e 's/^/err: /g' err_eff)
   if test $sta_eff -eq $sta_exp; then

lib/.gitignore

@@ -138,13 +138,19 @@
 /isnanl-nolibm.h
 /isnanl.c
 /iswblank.c
+/iswdigit.c
+/iswxdigit.c
 /itold.c
+/lc-charset-dispatch.c
+/lc-charset-dispatch.h
 /ldexpl.c
 /libc-config.h
 /limits.h
 /limits.in.h
 /localcharset.c
 /localcharset.h
+/locale.h
+/locale.in.h
 /localtime-buffer.c
 /localtime-buffer.h
 /lstat.c
@@ -158,10 +164,14 @@
 /mbchar.h
 /mbfile.c
 /mbfile.h
+/mbrtowc-impl-utf8.h
+/mbrtowc-impl.h
 /mbrtowc.c
 /mbsinit.c
 /mbswidth.c
 /mbswidth.h
+/mbtowc-lock.c
+/mbtowc-lock.h
 /memchr.c
 /memchr.valgrind
 /minmax.h
@@ -209,6 +219,9 @@
 /sched.h
 /sched.in.h
 /setenv.c
+/setlocale-lock.c
+/setlocale_null.c
+/setlocale_null.h
 /sig-handler.c
 /sig-handler.h
 /sigaction.c

lib/get-errno.c

@@ -1,6 +1,6 @@
 /* get-errno.c - get and set errno.
 
-   Copyright (C) 2002, 2006, 2009-2015, 2018-2019 Free Software
+   Copyright (C) 2002, 2006, 2009-2015, 2018-2020 Free Software
    Foundation, Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/get-errno.h

@@ -1,6 +1,6 @@
 /* get-errno.h - get and set errno.
 
-   Copyright (C) 2002, 2009-2015, 2018-2019 Free Software Foundation,
+   Copyright (C) 2002, 2009-2015, 2018-2020 Free Software Foundation,
    Inc.
 
    This program is free software: you can redistribute it and/or modify

lib/local.mk

@@ -1,4 +1,4 @@
-## Copyright (C) 2001-2015, 2018-2019 Free Software Foundation, Inc.
+## Copyright (C) 2001-2015, 2018-2020 Free Software Foundation, Inc.
 ##
 ## This program is free software: you can redistribute it and/or modify
 ## it under the terms of the GNU General Public License as published by

lib/main.c

@@ -1,6 +1,6 @@
 /* Yacc library main function.
 
-   Copyright (C) 2002, 2009-2015, 2018-2019 Free Software Foundation,
+   Copyright (C) 2002, 2009-2015, 2018-2020 Free Software Foundation,
    Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.

lib/path-join.c

@@ -1,5 +1,5 @@
 /* Concatenate path components.
-   Copyright (C) 2018-2019 Free Software Foundation, Inc.
+   Copyright (C) 2018-2020 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

lib/path-join.h

@@ -1,5 +1,5 @@
 /* Concatenate path components.
-   Copyright (C) 2018-2019 Free Software Foundation, Inc.
+   Copyright (C) 2018-2020 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

lib/timevar.def

@@ -1,7 +1,7 @@
 /* This file contains the definitions for timing variables used to -*- C -*-
    measure run-time performance of the compiler.
 
-   Copyright (C) 2002, 2007, 2009-2015, 2018-2019 Free Software
+   Copyright (C) 2002, 2007, 2009-2015, 2018-2020 Free Software
    Foundation, Inc.
 
    Contributed by Akim Demaille <akim@freefriends.org>.