plural.c: improve reproducibility

There is a subtle non-determinism when building glibc.
This depends on whether the glibc is built using the distibuted
file intl/plural.c or built using the generated file intl/plural.c.
These two files (intl/plural.c generated vs. distributed) are slightly
different, hence we may end up with slightly different libraries.

Originally, having "bison" installed was optional. So if "bison" was
not present, we always built libraries with the distributed plural.c.
If bison was installed, we *** may have *** replaced the distributed
file plural.c with a new plural.c generated from plural.y. if the
timestamps triggered this rule:

plural.c plural.y
	$(BISON) $(BISONFLAGS) $@ $^

Given that timestamps are not preserved in GIT repositories, the above
rule is not reliable without explicitly touching plural.c or plural.y.
In other words, the rule may or may not have fired.

In summary: there are two distinct sources of non-determinism:

1. Having "bison" installed or not
2. Having "bison" installed but timestamps poorly defined.

This patch fixes this by requiring "bison" being installed
and by always generating intl/plural.c from intl/plural.y.
(This is achieved by simply removing checked-in intl/plural.c)

	[BZ #22432]
	* configure.ac (BISON): Require to be present.
	* configure: Regenerated.
	* intl/Makefile (generated): Add plural.c.
	[$(BISON) != no]: Make code unconditional.
	(plural.c): Change rule to $(objpfx)plural.c.
	($(objpfx)plural.o): Depend on $(objpfx)plural.c.
	* intl/plural.c: Remove.
	* manual/install.texi (Tools for Compilation): Document bison as
	required.
	* INSTALL: Regenerated.

8 files changed, 98 insertions, 2098 deletions

diff --git a/ChangeLog b/ChangeLog
index 8c042b8be6..4380b73a03 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,17 @@
+2017-11-30  Juro Bystricky  <juro.bystricky@linux.intel.com>
+
+	[BZ #22432]
+	* configure.ac (BISON): Require to be present.
+	* configure: Regenerated.
+	* intl/Makefile (generated): Add plural.c.
+	[$(BISON) != no]: Make code unconditional.
+	(plural.c): Change rule to $(objpfx)plural.c.
+	($(objpfx)plural.o): Depend on $(objpfx)plural.c.
+	* intl/plural.c: Remove.
+	* manual/install.texi (Tools for Compilation): Document bison as
+	required.
+	* INSTALL: Regenerated.
+
 2017-11-30  Joseph Myers  <joseph@codesourcery.com>
 
 	* sysdeps/m68k/m680x0/fpu/s_llrint.c: Include
diff --git a/INSTALL b/INSTALL
index ac8db74a0f..d1a34c2a90 100644
--- a/INSTALL
+++ b/INSTALL
@@ -462,6 +462,11 @@ build the GNU C Library:
      version 4.1.3 is the newest verified to work to build the GNU C
      Library.
 
+   * GNU 'bison' 2.7 or later
+
+     'bison' is used to generate the 'yacc' parser code in the 'intl'
+     subdirectory.
+
    * Perl 5
 
      Perl is not required, but it is used if present to test the
@@ -481,11 +486,6 @@ and if you change any of the message translation files you will need
 
    * GNU 'gettext' 0.10.36 or later
 
-If you wish to regenerate the 'yacc' parser code in the 'intl'
-subdirectory you will need
-
-   * GNU 'bison' 2.7 or later
-
 You may also need these packages if you upgrade your source tree using
 patches, although we try to avoid this.
 
diff --git a/NEWS b/NEWS
index f3fdf9aec5..48af4acaea 100644
--- a/NEWS
+++ b/NEWS
@@ -79,7 +79,8 @@ Deprecated and removed features, and other changes affecting compatibility:
 
 Changes to build and runtime requirements:
 
-  [Add changes to build and runtime requirements here]
+* bison version 2.7 or later is required to generate code in the 'intl'
+  subdirectory.
 
 Security related changes:
 
diff --git a/configure b/configure
index d9d9243238..caba102846 100755
--- a/configure
+++ b/configure
@@ -632,7 +632,6 @@ ASFLAGS_config
 libc_cv_cc_with_libunwind
 libc_cv_insert
 libc_cv_protected_data
-BISON
 INSTALL_INFO
 PERL
 BASH_SHELL
@@ -645,6 +644,7 @@ PYTHON
 PYTHON_PROG
 AUTOCONF
 NM
+BISON
 AWK
 SED
 MAKEINFO
@@ -4940,6 +4940,69 @@ if test $ac_verc_fail = yes; then
   critic_missing="$critic_missing gawk"
 fi
 
+for ac_prog in bison
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_BISON+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$BISON"; then
+  ac_cv_prog_BISON="$BISON" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_BISON="$ac_prog"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+BISON=$ac_cv_prog_BISON
+if test -n "$BISON"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
+$as_echo "$BISON" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$BISON" && break
+done
+
+if test -z "$BISON"; then
+  ac_verc_fail=yes
+else
+  # Found it, now check the version.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $BISON" >&5
+$as_echo_n "checking version of $BISON... " >&6; }
+  ac_prog_version=`$BISON --version 2>&1 | sed -n 's/^.*bison (GNU Bison) \([0-9]*\.[0-9.]*\).*$/\1/p'`
+  case $ac_prog_version in
+    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
+    2.7*|[3-9].*|[1-9][0-9]*)
+       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
+    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
+
+  esac
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
+$as_echo "$ac_prog_version" >&6; }
+fi
+if test $ac_verc_fail = yes; then
+  critic_missing="$critic_missing bison"
+fi
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC is sufficient to build libc" >&5
 $as_echo_n "checking if $CC is sufficient to build libc... " >&6; }
@@ -5399,69 +5462,6 @@ $as_echo "no" >&6; }
 fi
 
 
-for ac_prog in bison
-do
-  # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_BISON+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-  if test -n "$BISON"; then
-  ac_cv_prog_BISON="$BISON" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
-  IFS=$as_save_IFS
-  test -z "$as_dir" && as_dir=.
-    for ac_exec_ext in '' $ac_executable_extensions; do
-  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_BISON="$ac_prog"
-    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
-    break 2
-  fi
-done
-  done
-IFS=$as_save_IFS
-
-fi
-fi
-BISON=$ac_cv_prog_BISON
-if test -n "$BISON"; then
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $BISON" >&5
-$as_echo "$BISON" >&6; }
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-  test -n "$BISON" && break
-done
-
-if test -z "$BISON"; then
-  ac_verc_fail=yes
-else
-  # Found it, now check the version.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking version of $BISON" >&5
-$as_echo_n "checking version of $BISON... " >&6; }
-  ac_prog_version=`$BISON --version 2>&1 | sed -n 's/^.*bison (GNU Bison) \([0-9]*\.[0-9.]*\).*$/\1/p'`
-  case $ac_prog_version in
-    '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
-    2.7*|[3-9].*|[1-9][0-9]*)
-       ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
-    *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
-  esac
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
-$as_echo "$ac_prog_version" >&6; }
-fi
-if test $ac_verc_fail = yes; then
-  BISON=no
-fi
-
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for .set assembler directive" >&5
 $as_echo_n "checking for .set assembler directive... " >&6; }
diff --git a/configure.ac b/configure.ac
index 8ebc490a55..9707ae4d8e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -939,6 +939,9 @@ AC_CHECK_PROG_VER(SED, sed, --version,
 AC_CHECK_PROG_VER(AWK, gawk, --version,
   [GNU Awk[^0-9]*\([0-9][0-9.]*\)],
   [3.1.[2-9]*|3.[2-9]*|[4-9]*], critic_missing="$critic_missing gawk")
+AC_CHECK_PROG_VER(BISON, bison, --version,
+  [bison (GNU Bison) \([0-9]*\.[0-9.]*\)],
+  [2.7*|[3-9].*|[1-9][0-9]*], critic_missing="$critic_missing bison")
 
 AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [
 AC_TRY_COMPILE([], [
@@ -1070,10 +1073,6 @@ if test "$PERL" != no &&
 fi
 AC_PATH_PROG(INSTALL_INFO, install-info, no,
 	     $PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
-AC_CHECK_PROG_VER(BISON, bison, --version,
-		  [bison (GNU Bison) \([0-9]*\.[0-9.]*\)],
-		  [2.7*|[3-9].*|[1-9][0-9]*],
-		  BISON=no)
 
 AC_CACHE_CHECK(for .set assembler directive, libc_cv_asm_set_directive, [dnl
 cat > conftest.s <<EOF
diff --git a/intl/Makefile b/intl/Makefile
index c8bec9b138..2deb6ef25e 100644
--- a/intl/Makefile
+++ b/intl/Makefile
@@ -38,14 +38,13 @@ before-compile += $(objpfx)msgs.h
 
 install-others = $(inst_localedir)/locale.alias
 
-generated += msgs.h mtrace-tst-gettext.out tst-gettext.mtrace
+generated += msgs.h mtrace-tst-gettext.out tst-gettext.mtrace plural.c
 generated-dirs += domaindir localedir
 
-ifneq (no,$(BISON))
-plural.c: plural.y
+$(objpfx)plural.c: plural.y
 	$(BISON) $(BISONFLAGS) $@ $^
-endif
-$(objpfx)plural.o: plural.c
+
+$(objpfx)plural.o: $(objpfx)plural.c
 
 ifeq ($(run-built-tests),yes)
 ifeq (yes,$(build-shared))
diff --git a/intl/plural.c b/intl/plural.c
deleted file mode 100644
index 73a71633f1..0000000000
--- a/intl/plural.c
+++ /dev/null
@@ -1,2011 +0,0 @@
-/* A Bison parser, made by GNU Bison 2.7.  */
-
-/* Bison implementation for Yacc-like parsers in C
-
-      Copyright (C) 1984, 1989-1990, 2000-2012 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, you may create a larger work that contains
-   part or all of the Bison parser skeleton and distribute that work
-   under terms of your choice, so long as that work isn't itself a
-   parser generator using the skeleton or a modified version thereof
-   as a parser skeleton.  Alternatively, if you modify or redistribute
-   the parser skeleton itself, you may (at your option) remove this
-   special exception, which will cause the skeleton and the resulting
-   Bison output files to be licensed under the GNU General Public
-   License without this special exception.
-
-   This special exception was added by the Free Software Foundation in
-   version 2.2 of Bison.  */
-
-/* C LALR(1) parser skeleton written by Richard Stallman, by
-   simplifying the original so-called "semantic" parser.  */
-
-/* All symbols defined below should begin with yy or YY, to avoid
-   infringing on user name space.  This should be done even for local
-   variables, as they might otherwise be expanded by user macros.
-   There are some unavoidable exceptions within include files to
-   define necessary library symbols; they are noted "INFRINGES ON
-   USER NAME SPACE" below.  */
-
-/* Identify Bison output.  */
-#define YYBISON 1
-
-/* Bison version.  */
-#define YYBISON_VERSION "2.7"
-
-/* Skeleton name.  */
-#define YYSKELETON_NAME "yacc.c"
-
-/* Pure parsers.  */
-#define YYPURE 2
-
-/* Push parsers.  */
-#define YYPUSH 0
-
-/* Pull parsers.  */
-#define YYPULL 1
-
-
-/* Substitute the variable and function names.  */
-#define yyparse         __gettextparse
-#define yylex           __gettextlex
-#define yyerror         __gettexterror
-#define yylval          __gettextlval
-#define yychar          __gettextchar
-#define yydebug         __gettextdebug
-#define yynerrs         __gettextnerrs
-
-/* Copy the first part of user declarations.  */
-/* Line 371 of yacc.c  */
-#line 1 "plural.y"
-
-/* Expression parsing for plural form selection.
-   Copyright (C) 2000-2017 Free Software Foundation, Inc.
-   Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
-
-   This program is free software: you can redistribute it and/or modify
-   it under the terms of the GNU Lesser General Public License as published by
-   the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
-
-/* For bison < 2.0, the bison generated parser uses alloca.  AIX 3 forces us
-   to put this declaration at the beginning of the file.  The declaration in
-   bison's skeleton file comes too late.  This must come before <config.h>
-   because <config.h> may include arbitrary system headers.
-   This can go away once the AM_INTL_SUBDIR macro requires bison >= 2.0.  */
-#if defined _AIX && !defined __GNUC__
- #pragma alloca
-#endif
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include "plural-exp.h"
-
-/* The main function generated by the parser is called __gettextparse,
-   but we want it to be called PLURAL_PARSE.  */
-#ifndef _LIBC
-# define __gettextparse PLURAL_PARSE
-#endif
-
-
-/* Line 371 of yacc.c  */
-#line 119 "plural.c"
-
-# ifndef YY_NULL
-#  if defined __cplusplus && 201103L <= __cplusplus
-#   define YY_NULL nullptr
-#  else
-#   define YY_NULL 0
-#  endif
-# endif
-
-/* Enabling verbose error messages.  */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE 0
-#endif
-
-
-/* Enabling traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG 0
-#endif
-#if YYDEBUG
-extern int __gettextdebug;
-#endif
-
-/* Tokens.  */
-#ifndef YYTOKENTYPE
-# define YYTOKENTYPE
-   /* Put the tokens into the symbol table, so that GDB and other debuggers
-      know about them.  */
-   enum yytokentype {
-     EQUOP2 = 258,
-     CMPOP2 = 259,
-     ADDOP2 = 260,
-     MULOP2 = 261,
-     NUMBER = 262
-   };
-#endif
-/* Tokens.  */
-#define EQUOP2 258
-#define CMPOP2 259
-#define ADDOP2 260
-#define MULOP2 261
-#define NUMBER 262
-
-
-
-#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
-typedef union YYSTYPE
-{
-/* Line 387 of yacc.c  */
-#line 49 "plural.y"
-
-  unsigned long int num;
-  enum expression_operator op;
-  struct expression *exp;
-
-
-/* Line 387 of yacc.c  */
-#line 180 "plural.c"
-} YYSTYPE;
-# define YYSTYPE_IS_TRIVIAL 1
-# define yystype YYSTYPE /* obsolescent; will be withdrawn */
-# define YYSTYPE_IS_DECLARED 1
-#endif
-
-
-#ifdef YYPARSE_PARAM
-#if defined __STDC__ || defined __cplusplus
-int __gettextparse (void *YYPARSE_PARAM);
-#else
-int __gettextparse ();
-#endif
-#else /* ! YYPARSE_PARAM */
-#if defined __STDC__ || defined __cplusplus
-int __gettextparse (struct parse_args *arg);
-#else
-int __gettextparse ();
-#endif
-#endif /* ! YYPARSE_PARAM */
-
-
-
-/* Copy the second part of user declarations.  */
-/* Line 390 of yacc.c  */
-#line 55 "plural.y"
-
-/* Prototypes for local functions.  */
-static int yylex (YYSTYPE *lval, struct parse_args *arg);
-static void yyerror (struct parse_args *arg, const char *str);
-
-/* Allocation of expressions.  */
-
-static struct expression *
-new_exp (int nargs, enum expression_operator op,
-	 struct expression * const *args)
-{
-  int i;
-  struct expression *newp;
-
-  /* If any of the argument could not be malloc'ed, just return NULL.  */
-  for (i = nargs - 1; i >= 0; i--)
-    if (args[i] == NULL)
-      goto fail;
-
-  /* Allocate a new expression.  */
-  newp = (struct expression *) malloc (sizeof (*newp));
-  if (newp != NULL)
-    {
-      newp->nargs = nargs;
-      newp->operation = op;
-      for (i = nargs - 1; i >= 0; i--)
-	newp->val.args[i] = args[i];
-      return newp;
-    }
-
- fail:
-  for (i = nargs - 1; i >= 0; i--)
-    FREE_EXPRESSION (args[i]);
-
-  return NULL;
-}
-
-static inline struct expression *
-new_exp_0 (enum expression_operator op)
-{
-  return new_exp (0, op, NULL);
-}
-
-static inline struct expression *
-new_exp_1 (enum expression_operator op, struct expression *right)
-{
-  struct expression *args[1];
-
-  args[0] = right;
-  return new_exp (1, op, args);
-}
-
-static struct expression *
-new_exp_2 (enum expression_operator op, struct expression *left,
-	   struct expression *right)
-{
-  struct expression *args[2];
-
-  args[0] = left;
-  args[1] = right;
-  return new_exp (2, op, args);
-}
-
-static inline struct expression *
-new_exp_3 (enum expression_operator op, struct expression *bexp,
-	   struct expression *tbranch, struct expression *fbranch)
-{
-  struct expression *args[3];
-
-  args[0] = bexp;
-  args[1] = tbranch;
-  args[2] = fbranch;
-  return new_exp (3, op, args);
-}
-
-
-/* Line 390 of yacc.c  */
-#line 284 "plural.c"
-
-#ifdef short
-# undef short
-#endif
-
-#ifdef YYTYPE_UINT8
-typedef YYTYPE_UINT8 yytype_uint8;
-#else
-typedef unsigned char yytype_uint8;
-#endif
-
-#ifdef YYTYPE_INT8
-typedef YYTYPE_INT8 yytype_int8;
-#elif (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-typedef signed char yytype_int8;
-#else
-typedef short int yytype_int8;
-#endif
-
-#ifdef YYTYPE_UINT16
-typedef YYTYPE_UINT16 yytype_uint16;
-#else
-typedef unsigned short int yytype_uint16;
-#endif
-
-#ifdef YYTYPE_INT16
-typedef YYTYPE_INT16 yytype_int16;
-#else
-typedef short int yytype_int16;
-#endif
-
-#ifndef YYSIZE_T
-# ifdef __SIZE_TYPE__
-#  define YYSIZE_T __SIZE_TYPE__
-# elif defined size_t
-#  define YYSIZE_T size_t
-# elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
-#  define YYSIZE_T size_t
-# else
-#  define YYSIZE_T unsigned int
-# endif
-#endif
-
-#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
-
-#ifndef YY_
-# if defined YYENABLE_NLS && YYENABLE_NLS
-#  if ENABLE_NLS
-#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
-#   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
-#  endif
-# endif
-# ifndef YY_
-#  define YY_(Msgid) Msgid
-# endif
-#endif
-
-/* Suppress unused-variable warnings by "using" E.  */
-#if ! defined lint || defined __GNUC__
-# define YYUSE(E) ((void) (E))
-#else
-# define YYUSE(E) /* empty */
-#endif
-
-/* Identity function, used to suppress warnings about constant conditions.  */
-#ifndef lint
-# define YYID(N) (N)
-#else
-#if (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-static int
-YYID (int yyi)
-#else
-static int
-YYID (yyi)
-    int yyi;
-#endif
-{
-  return yyi;
-}
-#endif
-
-#if ! defined yyoverflow || YYERROR_VERBOSE
-
-/* The parser invokes alloca or malloc; define the necessary symbols.  */
-
-# ifdef YYSTACK_USE_ALLOCA
-#  if YYSTACK_USE_ALLOCA
-#   ifdef __GNUC__
-#    define YYSTACK_ALLOC __builtin_alloca
-#   elif defined __BUILTIN_VA_ARG_INCR
-#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
-#   elif defined _AIX
-#    define YYSTACK_ALLOC __alloca
-#   elif defined _MSC_VER
-#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
-#    define alloca _alloca
-#   else
-#    define YYSTACK_ALLOC alloca
-#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && (defined __STDC__ || defined __C99__FUNC__ \
-     || defined __cplusplus || defined _MSC_VER)
-#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
-      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
-#     ifndef EXIT_SUCCESS
-#      define EXIT_SUCCESS 0
-#     endif
-#    endif
-#   endif
-#  endif
-# endif
-
-# ifdef YYSTACK_ALLOC
-   /* Pacify GCC's `empty if-body' warning.  */
-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
-#  ifndef YYSTACK_ALLOC_MAXIMUM