bison: avoid warnings from static code analysis

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index fe1040804d0242ac6c7ef11efa483fef84ab1f91..600e77dffb6eb3351856d54cc99df8f38d04912e 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -1,11 +1,11 @@
                                                              -*- C -*-
 # Yacc compatible skeleton for Bison
 
                                                              -*- C -*-
 # Yacc compatible skeleton for Bison
 

-# Copyright (C) 1984, 1989-1990, 2000-2012 Free Software Foundation,
+# Copyright (C) 1984, 1989-1990, 2000-2015 Free Software Foundation,

 # Inc.
 
 m4_pushdef([b4_copyright_years],
 # Inc.
 
 m4_pushdef([b4_copyright_years],

-           [1984, 1989-1990, 2000-2012])
+           [1984, 1989-1990, 2000-2015])

 
 # 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
 
 # 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


@@ -67,36 +67,39 @@ m4_define_default([b4_stack_depth_init],  [200])
 ## ------------------------ ##
 
 b4_percent_define_default([[api.pure]], [[false]])
 ## ------------------------ ##
 
 b4_percent_define_default([[api.pure]], [[false]])

-b4_define_flag_if([pure])
-m4_define([b4_pure_flag],
-          [b4_percent_define_flag_if([[api.pure]], [[1]], [[0]])])
-
-# b4_yacc_pure_if(IF-TRUE, IF-FALSE)
-# ----------------------------------
-# Expand IF-TRUE, if %pure-parser and %parse-param, IF-FALSE otherwise.
-m4_define([b4_yacc_pure_if],
-[b4_pure_if([m4_ifset([b4_parse_param],
-                      [$1], [$2])],
-            [$2])])
-
+b4_percent_define_check_values([[[[api.pure]],
+                                 [[false]], [[true]], [[]], [[full]]]])
+
+m4_define([b4_pure_flag], [[0]])
+m4_case(b4_percent_define_get([[api.pure]]),
+        [false], [m4_define([b4_pure_flag], [[0]])],
+        [true],  [m4_define([b4_pure_flag], [[1]])],
+        [],      [m4_define([b4_pure_flag], [[1]])],
+        [full],  [m4_define([b4_pure_flag], [[2]])])
+
+m4_define([b4_pure_if],
+[m4_case(b4_pure_flag,
+         [0], [$2],
+         [1], [$1],
+         [2], [$1])])
+         [m4_fatal([invalid api.pure value: ]$1)])])
+
+# b4_yyerror_arg_loc_if(ARG)
+# --------------------------
+# Expand ARG iff yyerror is to be given a location as argument.
+m4_define([b4_yyerror_arg_loc_if],
+[b4_locations_if([m4_case(b4_pure_flag,
+                          [1], [m4_ifset([b4_parse_param], [$1])],
+                          [2], [$1])])])

 
 # b4_yyerror_args
 # ---------------
 # Arguments passed to yyerror: user args plus yylloc.
 m4_define([b4_yyerror_args],
 
 # b4_yyerror_args
 # ---------------
 # Arguments passed to yyerror: user args plus yylloc.
 m4_define([b4_yyerror_args],

-[b4_yacc_pure_if([b4_locations_if([&yylloc, ])])dnl
-m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
+[b4_yyerror_arg_loc_if([&yylloc, ])dnl
+m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])])

 
 
 
 

-# b4_lex_param
-# ------------
-# Accumulate in b4_lex_param all the yylex arguments.
-# b4_lex_param arrives quoted twice, but we want to keep only one level.
-m4_define([b4_lex_param],
-m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
-b4_locations_if([, [[YYLTYPE *], [&yylloc]]])m4_ifdef([b4_lex_param], [, ])])dnl
-m4_ifdef([b4_lex_param], b4_lex_param)))
-

 
 ## ------------ ##
 ## Data Types.  ##
 
 ## ------------ ##
 ## Data Types.  ##


@@ -140,7 +143,6 @@ m4_define([b4_rhs_value],
           [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
 
 
           [b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
 
 

-

 ## ----------- ##
 ## Locations.  ##
 ## ----------- ##
 ## ----------- ##
 ## Locations.  ##
 ## ----------- ##


@@ -172,12 +174,20 @@ m4_define([b4_declare_scanner_communication_variables], [[
 /* The lookahead symbol.  */
 int yychar;
 
 /* The lookahead symbol.  */
 int yychar;
 

+]b4_pure_if([[

 /* The semantic value of the lookahead symbol.  */
 /* The semantic value of the lookahead symbol.  */

-YYSTYPE yylval;]b4_locations_if([[
+/* Default value used for initialization, for pacifying older GCCs
+   or non-GCC compilers.  */
+YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
+YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);]b4_locations_if([[

 
 /* Location data for the lookahead symbol.  */
 
 /* Location data for the lookahead symbol.  */

-YYLTYPE yylloc;]])b4_pure_if([], [[
-
+static YYLTYPE yyloc_default]b4_yyloc_default[;
+YYLTYPE yylloc = yyloc_default;]])],
+[[/* The semantic value of the lookahead symbol.  */
+YYSTYPE yylval;]b4_locations_if([[
+/* Location data for the lookahead symbol.  */
+YYLTYPE yylloc]b4_yyloc_default[;]])[

 /* Number of syntax errors so far.  */
 int yynerrs;]])])
 
 /* Number of syntax errors so far.  */
 int yynerrs;]])])
 


@@ -195,9 +205,9 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
     int yyerrstatus;
 
     /* The stacks and their tools:
     int yyerrstatus;
 
     /* The stacks and their tools:

-       `yyss': related to states.
-       `yyvs': related to semantic values.]b4_locations_if([[
-       `yyls': related to locations.]])[
+       'yyss': related to states.
+       'yyvs': related to semantic values.]b4_locations_if([[
+       'yyls': related to locations.]])[

 
        Refer to the stacks through separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */
 
        Refer to the stacks through separate pointers, to allow yyoverflow
        to reallocate them elsewhere.  */


@@ -232,35 +242,34 @@ m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
 # Declaration of yyparse (and dependencies) when using the push parser
 # (including in pull mode).
 m4_define([b4_declare_yyparse_push_],
 # Declaration of yyparse (and dependencies) when using the push parser
 # (including in pull mode).
 m4_define([b4_declare_yyparse_push_],

-[[typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+[[#ifndef YYPUSH_MORE_DEFINED
+# define YYPUSH_MORE_DEFINED

 enum { YYPUSH_MORE = 4 };
 enum { YYPUSH_MORE = 4 };

-]b4_pull_if([b4_c_function_decl([b4_prefix[parse]], [[int]], b4_parse_param)
-])b4_c_function_decl([b4_prefix[push_parse]], [[int]],
-  [[b4_prefix[pstate *yyps]], [[yyps]]]b4_pure_if([,
-  [[[int yypushed_char]], [[yypushed_char]]],
-  [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
-  [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
+#endif
+
+typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+
+]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param)
+])b4_function_declare([b4_prefix[push_parse]], [[int]],
+  [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
+  [[[int pushed_char]], [[pushed_char]]],
+  [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
+  [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,

   b4_parse_param]))
   b4_parse_param]))

-b4_pull_if([b4_c_function_decl([b4_prefix[pull_parse]], [[int]],
-  [[b4_prefix[pstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
+b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]],
+  [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,

   b4_parse_param]))])
   b4_parse_param]))])

-b4_c_function_decl([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
+b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]],

                     [[[void]], []])
                     [[[void]], []])

-b4_c_function_decl([b4_prefix[pstate_delete]], [[void]],
-                   [[b4_prefix[pstate *yyps]], [[yyps]]])dnl
+b4_function_declare([b4_prefix[pstate_delete]], [[void]],
+                   [[b4_prefix[pstate *ps]], [[ps]]])dnl

 ])
 
 # b4_declare_yyparse_
 # -------------------
 # When not the push parser.
 m4_define([b4_declare_yyparse_],
 ])
 
 # b4_declare_yyparse_
 # -------------------
 # When not the push parser.
 m4_define([b4_declare_yyparse_],

-[[#ifdef YYPARSE_PARAM
-]b4_c_function_decl(b4_prefix[parse], [int],
-                    [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
-#else /* ! YYPARSE_PARAM */
-]b4_c_function_decl(b4_prefix[parse], [int], b4_parse_param)[
-#endif /* ! YYPARSE_PARAM */]dnl
-])
+[b4_function_declare(b4_prefix[parse], [int], b4_parse_param)])

 
 
 # b4_declare_yyparse
 
 
 # b4_declare_yyparse


@@ -279,7 +288,7 @@ m4_define([b4_shared_declarations],
 [b4_cpp_guard_open([b4_spec_defines_file])[
 ]b4_declare_yydebug[
 ]b4_percent_code_get([[requires]])[
 [b4_cpp_guard_open([b4_spec_defines_file])[
 ]b4_declare_yydebug[
 ]b4_percent_code_get([[requires]])[

-]b4_token_enums_defines(b4_tokens)[
+]b4_token_enums_defines[

 ]b4_declare_yylstype[
 ]b4_declare_yyparse[
 ]b4_percent_code_get([[provides]])[
 ]b4_declare_yylstype[
 ]b4_declare_yyparse[
 ]b4_percent_code_get([[provides]])[


@@ -290,10 +299,7 @@ m4_define([b4_shared_declarations],
 ## Output files.  ##
 ## -------------- ##
 
 ## Output files.  ##
 ## -------------- ##
 

-# We do want M4 expansion after # for CPP macros.
-m4_changecom()
-m4_divert_push(0)dnl
-@output(b4_parser_file_name@)@
+b4_output_begin([b4_parser_file_name])

 b4_copyright([Bison implementation for Yacc-like parsers in C])[
 
 /* C LALR(1) parser skeleton written by Richard Stallman, by
 b4_copyright([Bison implementation for Yacc-like parsers in C])[
 
 /* C LALR(1) parser skeleton written by Richard Stallman, by


@@ -308,7 +314,11 @@ b4_copyright([Bison implementation for Yacc-like parsers in C])[
 
 ]b4_identification
 b4_percent_code_get([[top]])[]dnl
 
 ]b4_identification
 b4_percent_code_get([[top]])[]dnl

-m4_if(b4_prefix, [yy], [],
+m4_if(b4_api_prefix, [yy], [],
+[[/* Substitute the type names.  */
+#define YYSTYPE         ]b4_api_PREFIX[STYPE]b4_locations_if([[
+#define YYLTYPE         ]b4_api_PREFIX[LTYPE]])])[
+]m4_if(b4_prefix, [yy], [],

 [[/* Substitute the variable and function names.  */]b4_pull_if([[
 #define yyparse         ]b4_prefix[parse]])b4_push_if([[
 #define yypush_parse    ]b4_prefix[push_parse]b4_pull_if([[
 [[/* Substitute the variable and function names.  */]b4_pull_if([[
 #define yyparse         ]b4_prefix[parse]])b4_push_if([[
 #define yypush_parse    ]b4_prefix[push_parse]b4_pull_if([[


@@ -318,11 +328,12 @@ m4_if(b4_prefix, [yy], [],
 #define yypstate        ]b4_prefix[pstate]])[
 #define yylex           ]b4_prefix[lex
 #define yyerror         ]b4_prefix[error
 #define yypstate        ]b4_prefix[pstate]])[
 #define yylex           ]b4_prefix[lex
 #define yyerror         ]b4_prefix[error

-#define yylval          ]b4_prefix[lval
-#define yychar          ]b4_prefix[char

 #define yydebug         ]b4_prefix[debug
 #define yydebug         ]b4_prefix[debug

-#define yynerrs         ]b4_prefix[nerrs]b4_locations_if([[
-#define yylloc          ]b4_prefix[lloc]])])[
+#define yynerrs         ]b4_prefix[nerrs
+]]b4_pure_if([], [[
+#define yylval          ]b4_prefix[lval
+#define yychar          ]b4_prefix[char]b4_locations_if([[
+#define yylloc          ]b4_prefix[lloc]])]))[

 
 /* Copy the first part of user declarations.  */
 ]b4_user_pre_prologue[
 
 /* Copy the first part of user declarations.  */
 ]b4_user_pre_prologue[


@@ -337,9 +348,11 @@ m4_if(b4_prefix, [yy], [],
 # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
 #endif
 
 # define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
 #endif
 

-/* In a future release of Bison, this section will be replaced
+]m4_ifval(m4_quote(b4_spec_defines_file),
+[[/* In a future release of Bison, this section will be replaced

    by #include "@basename(]b4_spec_defines_file[@)".  */
    by #include "@basename(]b4_spec_defines_file[@)".  */

-]b4_shared_declarations[
+]])dnl
+b4_shared_declarations[

 
 /* Copy the second part of user declarations.  */
 ]b4_user_post_prologue
 
 /* Copy the second part of user declarations.  */
 ]b4_user_post_prologue


@@ -357,10 +370,8 @@ typedef unsigned char yytype_uint8;
 
 #ifdef YYTYPE_INT8
 typedef YYTYPE_INT8 yytype_int8;
 
 #ifdef YYTYPE_INT8
 typedef YYTYPE_INT8 yytype_int8;

-#elif ]b4_c_modern[
-typedef signed char yytype_int8;

 #else
 #else

-typedef short int yytype_int8;
+typedef signed char yytype_int8;

 #endif
 
 #ifdef YYTYPE_UINT16
 #endif
 
 #ifdef YYTYPE_UINT16


@@ -380,7 +391,7 @@ typedef short int yytype_int16;
 #  define YYSIZE_T __SIZE_TYPE__
 # elif defined size_t
 #  define YYSIZE_T size_t
 #  define YYSIZE_T __SIZE_TYPE__
 # elif defined size_t
 #  define YYSIZE_T size_t

-# elif ! defined YYSIZE_T && ]b4_c_modern[
+# elif ! defined YYSIZE_T

 #  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
 #  define YYSIZE_T size_t
 # else
 #  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
 #  define YYSIZE_T size_t
 # else


@@ -394,30 +405,15 @@ typedef short int yytype_int16;
 # if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
 # if defined YYENABLE_NLS && YYENABLE_NLS
 #  if ENABLE_NLS
 #   include <libintl.h> /* INFRINGES ON USER NAME SPACE */

-#   define YY_(msgid) dgettext ("bison-runtime", msgid)
+#   define YY_(Msgid) dgettext ("bison-runtime", Msgid)

 #  endif
 # endif
 # ifndef YY_
 #  endif
 # endif
 # ifndef YY_

-#  define YY_(msgid) msgid
+#  define YY_(Msgid) Msgid

 # endif
 #endif
 
 # 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
-]b4_c_function_def([YYID], [static int], [[int yyi], [yyi]])[
-{
-  return yyi;
-}
-#endif
+]b4_attribute_define[

 
 #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
 
 
 #if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
 


@@ -437,7 +433,7 @@ b4_push_if([], [b4_lac_if([], [[
 #    define alloca _alloca
 #   else
 #    define YYSTACK_ALLOC alloca
 #    define alloca _alloca
 #   else
 #    define YYSTACK_ALLOC alloca

-#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS && ]b4_c_modern[
+#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS

 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
       /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
 #     ifndef EXIT_SUCCESS
 #     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
       /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
 #     ifndef EXIT_SUCCESS


@@ -449,8 +445,8 @@ b4_push_if([], [b4_lac_if([], [[
 # endif]])])[
 
 # ifdef YYSTACK_ALLOC
 # endif]])])[
 
 # ifdef YYSTACK_ALLOC

-   /* Pacify GCC's `empty if-body' warning.  */
-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0))
+   /* Pacify GCC's 'empty if-body' warning.  */
+#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)

 #  ifndef YYSTACK_ALLOC_MAXIMUM
     /* The OS might guarantee only one guard page at the bottom of the stack,
        and a page size can be as small as 4096 bytes.  So we cannot safely
 #  ifndef YYSTACK_ALLOC_MAXIMUM
     /* The OS might guarantee only one guard page at the bottom of the stack,
        and a page size can be as small as 4096 bytes.  So we cannot safely


@@ -474,13 +470,13 @@ b4_push_if([], [b4_lac_if([], [[
 #  endif
 #  ifndef YYMALLOC
 #   define YYMALLOC malloc
 #  endif
 #  ifndef YYMALLOC
 #   define YYMALLOC malloc

-#   if ! defined malloc && ! defined EXIT_SUCCESS && ]b4_c_modern[
+#   if ! defined malloc && ! defined EXIT_SUCCESS

 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 #  ifndef YYFREE
 #   define YYFREE free
 void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 #  ifndef YYFREE
 #   define YYFREE free

-#   if ! defined free && ! defined EXIT_SUCCESS && ]b4_c_modern[
+#   if ! defined free && ! defined EXIT_SUCCESS

 void free (void *); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif
 void free (void *); /* INFRINGES ON USER NAME SPACE */
 #   endif
 #  endif


@@ -491,8 +487,8 @@ void free (void *); /* INFRINGES ON USER NAME SPACE */
 
 #if (! defined yyoverflow \
      && (! defined __cplusplus \
 
 #if (! defined yyoverflow \
      && (! defined __cplusplus \

-         || (]b4_locations_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
-             && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL)))
+         || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
+             && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))

 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc
 
 /* A type that is properly aligned for any stack member.  */
 union yyalloc


@@ -531,7 +527,7 @@ union yyalloc
         yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
         yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                 \
         yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
         yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                 \

-    while (YYID (0))
+    while (0)

 
 #endif
 
 
 #endif
 


@@ -550,7 +546,7 @@ union yyalloc
           for (yyi = 0; yyi < (Count); yyi++)   \
             (Dst)[yyi] = (Src)[yyi];            \
         }                                       \
           for (yyi = 0; yyi < (Count); yyi++)   \
             (Dst)[yyi] = (Src)[yyi];            \
         }                                       \

-      while (YYID (0))
+      while (0)

 #  endif
 # endif
 #endif /* !YYCOPY_NEEDED */
 #  endif
 # endif
 #endif /* !YYCOPY_NEEDED */


@@ -584,12 +580,12 @@ static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
   ]b4_translate[
 };
 
   ]b4_translate[
 };
 

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

 ]b4_integral_parser_table_define([rline], [b4_rline],
 ]b4_integral_parser_table_define([rline], [b4_rline],

-     [YYRLINE[YYN] -- Source line where rule number YYN was defined.])[
+     [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[

 #endif
 
 #endif
 

-#if YYDEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
+#if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[

 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =
 /* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
    First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
 static const char *const yytname[] =


@@ -609,13 +605,13 @@ static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
 
 #define YYPACT_NINF ]b4_pact_ninf[
 
 
 #define YYPACT_NINF ]b4_pact_ninf[
 

-#define yypact_value_is_default(yystate) \
-  ]b4_table_value_equals([[pact]], [[yystate]], [b4_pact_ninf])[
+#define yypact_value_is_default(Yystate) \
+  ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[

 
 #define YYTABLE_NINF ]b4_table_ninf[
 
 
 #define YYTABLE_NINF ]b4_table_ninf[
 

-#define yytable_value_is_error(yytable_value) \
-  ]b4_table_value_equals([[table]], [[yytable_value]], [b4_table_ninf])[
+#define yytable_value_is_error(Yytable_value) \
+  ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[

 
 ]b4_parser_tables_define[
 
 
 ]b4_parser_tables_define[
 


@@ -629,21 +625,6 @@ static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
 #define YYERROR         goto yyerrorlab
 
 
 #define YYERROR         goto yyerrorlab
 
 

-/* Like YYERROR except do call yyerror.  This remains here temporarily
-   to ease the transition to the new meaning of YYERROR, for GCC.
-   Once GCC version 2 has supplanted version 1, this can go.  However,
-   YYFAIL appears to be in use.  Nevertheless, it is formally deprecated
-   in Bison 2.4.2's NEWS entry, where a plan to phase it out is
-   discussed.  */
-
-#define YYFAIL          goto yyerrlab
-#if defined YYFAIL
-  /* This is here to suppress warnings from the GCC cpp's
-     -Wunused-macros.  Normally we don't worry about that warning, but
-     some users do, and we want to make it easy for users to remove
-     YYFAIL uses, which will produce warnings from Bison 2.5.  */
-#endif
-

 #define YYRECOVERING()  (!!yyerrstatus)
 
 #define YYBACKUP(Token, Value)                                  \
 #define YYRECOVERING()  (!!yyerrstatus)
 
 #define YYBACKUP(Token, Value)                                  \


@@ -662,72 +643,19 @@ do                                                              \
       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                  \
     }                                                           \
       yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
       YYERROR;                                                  \
     }                                                           \

-while (YYID (0))
-
+while (0)

 
 

+/* Error token number */

 #define YYTERROR        1
 #define YYERRCODE       256
 
 #define YYTERROR        1
 #define YYERRCODE       256
 

-
-/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
-   If N is 0, then set CURRENT to the empty location which ends
-   the previous symbol: RHS[0] (always defined).  */
-
+]b4_locations_if([[
+]b4_yylloc_default_define[

 #define YYRHSLOC(Rhs, K) ((Rhs)[K])
 #define YYRHSLOC(Rhs, K) ((Rhs)[K])

-#ifndef YYLLOC_DEFAULT
-# define YYLLOC_DEFAULT(Current, Rhs, N)                                \
-    do                                                                  \
-      if (YYID (N))                                                    \
-        {                                                               \
-          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
-          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
-          (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
-          (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
-        }                                                               \
-      else                                                              \
-        {                                                               \
-          (Current).first_line   = (Current).last_line   =              \
-            YYRHSLOC (Rhs, 0).last_line;                                \
-          (Current).first_column = (Current).last_column =              \
-            YYRHSLOC (Rhs, 0).last_column;                              \
-        }                                                               \
-    while (YYID (0))
-#endif]b4_locations_if([[
-
-
-/* YY_LOCATION_PRINT -- Print the location on the stream.
-   This macro was not mandated originally: define only if we know
-   we won't break user code: when these are the locations we know.  */
-
-#ifndef YY_LOCATION_PRINT
-# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
-#  define YY_LOCATION_PRINT(File, Loc)                  \
-     fprintf (File, "%d.%d-%d.%d",                      \
-              (Loc).first_line, (Loc).first_column,     \
-              (Loc).last_line,  (Loc).last_column)
-# else
-#  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
-# endif
-#endif]], [[
-
-
-/* This macro is provided for backward compatibility. */
-
-#ifndef YY_LOCATION_PRINT
-# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
-#endif]])[
-
-
-/* YYLEX -- calling `yylex' with the right arguments.  */
-
-#ifdef YYLEX_PARAM
-# define YYLEX yylex (]b4_pure_if([&yylval[]b4_locations_if([, &yylloc]), ])[YYLEX_PARAM)
-#else
-# define YYLEX ]b4_c_function_call([yylex], [int], b4_lex_param)[
-#endif
+]])[

 
 /* Enable debugging if requested.  */
 
 /* Enable debugging if requested.  */

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

 
 # ifndef YYFPRINTF
 #  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
 
 # ifndef YYFPRINTF
 #  include <stdio.h> /* INFRINGES ON USER NAME SPACE */


@@ -738,7 +666,9 @@ while (YYID (0))
 do {                                            \
   if (yydebug)                                  \
     YYFPRINTF Args;                             \
 do {                                            \
   if (yydebug)                                  \
     YYFPRINTF Args;                             \

-} while (YYID (0))
+} while (0)
+
+]b4_yy_location_print_define[

 
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
 do {                                                                      \
 
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
 do {                                                                      \


@@ -749,16 +679,16 @@ do {                                                                      \
                   Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
       YYFPRINTF (stderr, "\n");                                           \
     }                                                                     \
                   Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
       YYFPRINTF (stderr, "\n");                                           \
     }                                                                     \

-} while (YYID (0))
+} while (0)

 
 

-]b4_yy_symbol_print_generate([b4_c_function_def])[
+]b4_yy_symbol_print_define[

 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
 | TOP (included).                                                   |
 `------------------------------------------------------------------*/
 
 
 /*------------------------------------------------------------------.
 | yy_stack_print -- Print the state stack from its BOTTOM up to its |
 | TOP (included).                                                   |
 `------------------------------------------------------------------*/
 

-]b4_c_function_def([yy_stack_print], [static void],
+]b4_function_define([yy_stack_print], [static void],

                    [[yytype_int16 *yybottom], [yybottom]],
                    [[yytype_int16 *yytop],    [yytop]])[
 {
                    [[yytype_int16 *yybottom], [yybottom]],
                    [[yytype_int16 *yytop],    [yytop]])[
 {


@@ -775,14 +705,14 @@ do {                                                                      \
 do {                                                            \
   if (yydebug)                                                  \
     yy_stack_print ((Bottom), (Top));                           \
 do {                                                            \
   if (yydebug)                                                  \
     yy_stack_print ((Bottom), (Top));                           \

-} while (YYID (0))
+} while (0)

 
 
 /*------------------------------------------------.
 | Report that the YYRULE is going to be reduced.  |
 `------------------------------------------------*/
 
 
 
 /*------------------------------------------------.
 | Report that the YYRULE is going to be reduced.  |
 `------------------------------------------------*/
 

-]b4_c_function_def([yy_reduce_print], [static void],
+]b4_function_define([yy_reduce_print], [static void],

                    [[yytype_int16 *yyssp], [yyssp]],
                    [[YYSTYPE *yyvsp], [yyvsp]],
     b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
                    [[yytype_int16 *yyssp], [yyssp]],
                    [[YYSTYPE *yyvsp], [yyvsp]],
     b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],


@@ -811,17 +741,17 @@ do {                                                            \
 do {                                    \
   if (yydebug)                          \
     yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
 do {                                    \
   if (yydebug)                          \
     yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \

-} while (YYID (0))
+} while (0)

 
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;
 
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;

-#else /* !YYDEBUG */
+#else /* !]b4_api_PREFIX[DEBUG */

 # define YYDPRINTF(Args)
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
 # define YY_STACK_PRINT(Bottom, Top)
 # define YY_REDUCE_PRINT(Rule)
 # define YYDPRINTF(Args)
 # define YY_SYMBOL_PRINT(Title, Type, Value, Location)
 # define YY_STACK_PRINT(Bottom, Top)
 # define YY_REDUCE_PRINT(Rule)

-#endif /* !YYDEBUG */
+#endif /* !]b4_api_PREFIX[DEBUG */

 
 
 /* YYINITDEPTH -- initial size of the parser's stacks.  */
 
 
 /* YYINITDEPTH -- initial size of the parser's stacks.  */


@@ -852,7 +782,7 @@ int yydebug;
    required.  Return 1 if memory is exhausted.  */
 static int
 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
    required.  Return 1 if memory is exhausted.  */
 static int
 yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

                       char const *yydebug_prefix,
                       char const *yydebug_suffix,
 #endif
                       char const *yydebug_prefix,
                       char const *yydebug_suffix,
 #endif


@@ -945,7 +875,7 @@ do {                                                             \
           goto yyerrlab;                                         \
       }                                                          \
     }                                                            \
           goto yyerrlab;                                         \
       }                                                          \
     }                                                            \

-} while (YYID (0))
+} while (0)

 
 /* Discard any previous initial lookahead context because of Event,
    which may be a lookahead change or an invalidation of the currently
 
 /* Discard any previous initial lookahead context because of Event,
    which may be a lookahead change or an invalidation of the currently


@@ -958,7 +888,7 @@ do {                                                             \
    the parser stacks to try to find a new initial context in which the
    current lookahead is syntactically acceptable.  If it fails to find
    such a context, it discards the lookahead.  */
    the parser stacks to try to find a new initial context in which the
    current lookahead is syntactically acceptable.  If it fails to find
    such a context, it discards the lookahead.  */

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

 # define YY_LAC_DISCARD(Event)                                           \
 do {                                                                     \
   if (yy_lac_established)                                                \
 # define YY_LAC_DISCARD(Event)                                           \
 do {                                                                     \
   if (yy_lac_established)                                                \


@@ -968,7 +898,7 @@ do {                                                                     \
                    Event "\n");                                          \
       yy_lac_established = 0;                                            \
     }                                                                    \
                    Event "\n");                                          \
       yy_lac_established = 0;                                            \
     }                                                                    \

-} while (YYID (0))
+} while (0)

 #else
 # define YY_LAC_DISCARD(Event) yy_lac_established = 0
 #endif
 #else
 # define YY_LAC_DISCARD(Event) yy_lac_established = 0
 #endif


@@ -1061,7 +991,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
         else
           {
             if (yy_lac_stack_realloc (yyes_capacity, 1,
         else
           {
             if (yy_lac_stack_realloc (yyes_capacity, 1,

-#if YYDEBUG
+#if ]b4_api_PREFIX[DEBUG

                                       " (", ")",
 #endif
                                       yyes, yyesa, &yyesp, yyes_prev))
                                       " (", ")",
 #endif
                                       yyes, yyesa, &yyesp, yyes_prev))


@@ -1084,7 +1014,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */
 #   define yystrlen strlen
 #  else
 /* Return the length of YYSTR.  */

-]b4_c_function_def([yystrlen], [static YYSIZE_T],
+]b4_function_define([yystrlen], [static YYSIZE_T],

    [[const char *yystr], [yystr]])[
 {
   YYSIZE_T yylen;
    [[const char *yystr], [yystr]])[
 {
   YYSIZE_T yylen;


@@ -1101,7 +1031,7 @@ yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
    YYDEST.  */
 #  else
 /* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
    YYDEST.  */

-]b4_c_function_def([yystpcpy], [static char *],
+]b4_function_define([yystpcpy], [static char *],

    [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
 {
   char *yyd = yydest;
    [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
 {
   char *yyd = yydest;


@@ -1178,12 +1108,11 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
                 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
 {
                 ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
                 YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
 {

-  YYSIZE_T yysize0 = yytnamerr (YY_NULL, yytname[yytoken]);
+  YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);

   YYSIZE_T yysize = yysize0;
   YYSIZE_T yysize = yysize0;

-  YYSIZE_T yysize1;

   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */
   enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
   /* Internationalized format string. */

-  const char *yyformat = YY_NULL;
+  const char *yyformat = YY_NULLPTR;

   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per
   /* Arguments of yyformat. */
   char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
   /* Number of reported tokens (one for the "unexpected", one per


@@ -1191,10 +1120,6 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
   int yycount = 0;
 
   /* There are many possibilities here to consider:
   int yycount = 0;
 
   /* There are many possibilities here to consider:

-     - Assume YYFAIL is not used.  It's too flawed to consider.  See
-       <http://lists.gnu.org/archive/html/bison-patches/2009-12/msg00024.html>
-       for details.  YYERROR is fine as it does not invoke this
-       function.

      - If this state is a consistent state with a default action, then
        the only way this function was invoked is if the default action
        is an error action.  In that case, don't check for expected
      - If this state is a consistent state with a default action, then
        the only way this function was invoked is if the default action
        is an error action.  In that case, don't check for expected


@@ -1261,14 +1186,16 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];
                     break;
                   }
                 yyarg[yycount++] = yytname[yyx];

-                yysize1 = yysize + yytnamerr (YY_NULL, yytname[yyx]);
-                if (! (yysize <= yysize1
-                       && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-                  return 2;
-                yysize = yysize1;
+                {
+                  YYSIZE_T yysize1 = yysize + yytnamerr (YY_NULLPTR, yytname[yyx]);
+                  if (! (yysize <= yysize1
+                         && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+                    return 2;
+                  yysize = yysize1;
+                }

               }
         }]b4_lac_if([[
               }
         }]b4_lac_if([[

-# if YYDEBUG
+# if ]b4_api_PREFIX[DEBUG

       else if (yydebug)
         YYFPRINTF (stderr, "No expected tokens.\n");
 # endif]])[
       else if (yydebug)
         YYFPRINTF (stderr, "No expected tokens.\n");
 # endif]])[


@@ -1289,10 +1216,12 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
 # undef YYCASE_
     }
 
 # undef YYCASE_
     }
 

-  yysize1 = yysize + yystrlen (yyformat);
-  if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
-    return 2;
-  yysize = yysize1;
+  {
+    YYSIZE_T yysize1 = yysize + yystrlen (yyformat);
+    if (! (yysize <= yysize1 && yysize1 <= YYSTACK_ALLOC_MAXIMUM))
+      return 2;
+    yysize = yysize1;
+  }

 
   if (*yymsg_alloc < yysize)
     {
 
   if (*yymsg_alloc < yysize)
     {


@@ -1325,7 +1254,7 @@ yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
 }
 #endif /* YYERROR_VERBOSE */
 
 }
 #endif /* YYERROR_VERBOSE */
 

-]b4_yydestruct_generate([b4_c_function_def])[
+]b4_yydestruct_define[

 
 ]b4_pure_if([], [
 
 
 ]b4_pure_if([], [
 


@@ -1340,13 +1269,13 @@ struct yypstate
 
 static char yypstate_allocated = 0;]])b4_pull_if([
 
 
 static char yypstate_allocated = 0;]])b4_pull_if([
 

-b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
+b4_function_define([[yyparse]], [[int]], b4_parse_param)[

 {
 {

-  return yypull_parse (YY_NULL]m4_ifset([b4_parse_param],
-                                  [[, ]b4_c_args(b4_parse_param)])[);
+  return yypull_parse (YY_NULLPTR]m4_ifset([b4_parse_param],
+                                  [[, ]b4_args(b4_parse_param)])[);

 }
 
 }
 

-]b4_c_function_def([[yypull_parse]], [[int]],
+]b4_function_define([[yypull_parse]], [[int]],

   [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
   b4_parse_param]))[
 {
   [[[yypstate *yyps]], [[yyps]]]m4_ifset([b4_parse_param], [,
   b4_parse_param]))[
 {


@@ -1354,7 +1283,8 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   yypstate *yyps_local;]b4_pure_if([[
   int yychar;
   YYSTYPE yylval;]b4_locations_if([[
   yypstate *yyps_local;]b4_pure_if([[
   int yychar;
   YYSTYPE yylval;]b4_locations_if([[

-  YYLTYPE yylloc;]])])[
+  static YYLTYPE yyloc_default][]b4_yyloc_default[;
+  YYLTYPE yylloc = yyloc_default;]])])[

   if (yyps)
     yyps_local = yyps;
   else
   if (yyps)
     yyps_local = yyps;
   else


@@ -1369,9 +1299,9 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
         }
     }
   do {
         }
     }
   do {

-    yychar = YYLEX;
+    yychar = ]b4_lex[;

     yystatus =
     yystatus =

-      yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])[);
+      yypush_parse (yyps_local]b4_pure_if([[, yychar, &yylval]b4_locations_if([[, &yylloc]])])m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])[);

   } while (yystatus == YYPUSH_MORE);
   if (!yyps)
     yypstate_delete (yyps_local);
   } while (yystatus == YYPUSH_MORE);
   if (!yyps)
     yypstate_delete (yyps_local);


@@ -1379,20 +1309,20 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 }]])[
 
 /* Initialize the parser data structure.  */
 }]])[
 
 /* Initialize the parser data structure.  */

-]b4_c_function_def([[yypstate_new]], [[yypstate *]])[
+]b4_function_define([[yypstate_new]], [[yypstate *]])[

 {
   yypstate *yyps;]b4_pure_if([], [[
   if (yypstate_allocated)
 {
   yypstate *yyps;]b4_pure_if([], [[
   if (yypstate_allocated)

-    return YY_NULL;]])[
+    return YY_NULLPTR;]])[

   yyps = (yypstate *) malloc (sizeof *yyps);
   if (!yyps)
   yyps = (yypstate *) malloc (sizeof *yyps);
   if (!yyps)

-    return YY_NULL;
+    return YY_NULLPTR;

   yyps->yynew = 1;]b4_pure_if([], [[
   yypstate_allocated = 1;]])[
   return yyps;
 }
 
   yyps->yynew = 1;]b4_pure_if([], [[
   yypstate_allocated = 1;]])[
   return yyps;
 }
 

-]b4_c_function_def([[yypstate_delete]], [[void]],
+]b4_function_define([[yypstate_delete]], [[void]],

                    [[[yypstate *yyps]], [[yyps]]])[
 {
 #ifndef yyoverflow
                    [[[yypstate *yyps]], [[yyps]]])[
 {
 #ifndef yyoverflow


@@ -1430,11 +1360,11 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 | yypush_parse.  |
 `---------------*/
 
 | yypush_parse.  |
 `---------------*/
 

-]b4_c_function_def([[yypush_parse]], [[int]],
+]b4_function_define([[yypush_parse]], [[int]],

   [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
   [[[int yypushed_char]], [[yypushed_char]]],
   [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,
   [[[yypstate *yyps]], [[yyps]]]b4_pure_if([,
   [[[int yypushed_char]], [[yypushed_char]]],
   [[[YYSTYPE const *yypushed_val]], [[yypushed_val]]]b4_locations_if([,

-  [[[YYLTYPE const *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,
+  [[[YYLTYPE *yypushed_loc]], [[yypushed_loc]]]])])m4_ifset([b4_parse_param], [,

   b4_parse_param]))], [[
 
 
   b4_parse_param]))], [[
 
 


@@ -1442,12 +1372,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
 | yyparse.  |
 `----------*/
 
 | yyparse.  |
 `----------*/
 

-#ifdef YYPARSE_PARAM
-]b4_c_function_def([yyparse], [int],
-                   [[void *YYPARSE_PARAM], [YYPARSE_PARAM]])[
-#else /* ! YYPARSE_PARAM */
-]b4_c_function_def([yyparse], [int], b4_parse_param)[
-#endif]])[
+]b4_function_define([yyparse], [int], b4_parse_param)])[

 {]b4_pure_if([b4_declare_scanner_communication_variables
 ])b4_push_if([b4_pure_if([], [[
   int yypushed_char = yychar;
 {]b4_pure_if([b4_declare_scanner_communication_variables
 ])b4_push_if([b4_pure_if([], [[
   int yypushed_char = yychar;


@@ -1460,7 +1385,7 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   int yyn;
   int yyresult;
   /* Lookahead token as an internal (translated) token number.  */
   int yyn;
   int yyresult;
   /* Lookahead token as an internal (translated) token number.  */

-  int yytoken;
+  int yytoken = 0;

   /* The variables used to return semantic value and location from the
      action routines.  */
   YYSTYPE yyval;]b4_locations_if([[
   /* The variables used to return semantic value and location from the
      action routines.  */
   YYSTYPE yyval;]b4_locations_if([[


@@ -1485,10 +1410,9 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
       goto yyread_pushed_token;
     }]])[
 
       goto yyread_pushed_token;
     }]])[
 

-  yytoken = 0;
-  yyss = yyssa;
-  yyvs = yyvsa;]b4_locations_if([[
-  yyls = yylsa;]])[
+  yyssp = yyss = yyssa;
+  yyvsp = yyvs = yyvsa;]b4_locations_if([[
+  yylsp = yyls = yylsa;]])[

   yystacksize = YYINITDEPTH;]b4_lac_if([[
 
   yyes = yyesa;
   yystacksize = YYINITDEPTH;]b4_lac_if([[
 
   yyes = yyesa;


@@ -1502,32 +1426,17 @@ b4_c_function_def([[yyparse]], [[int]], b4_parse_param)[
   yyerrstatus = 0;
   yynerrs = 0;
   yychar = YYEMPTY; /* Cause a token to be read.  */
   yyerrstatus = 0;
   yynerrs = 0;
   yychar = YYEMPTY; /* Cause a token to be read.  */

-
-  /* Initialize stack pointers.
-     Waste one element of value and location stack
-     so that they stay on the same level as the state stack.
-     The wasted elements are never initialized.  */
-  yyssp = yyss;
-  yyvsp = yyvs;]b4_locations_if([[
-  yylsp = yyls;
-
-#if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL
-  /* Initialize the default location before parsing starts.  */
-  yylloc.first_line   = yylloc.last_line   = ]b4_location_initial_line[;
-  yylloc.first_column = yylloc.last_column = ]b4_location_initial_column[;
-#endif]])
-m4_ifdef([b4_initial_action],[
-m4_pushdef([b4_at_dollar],     [m4_define([b4_at_dollar_used])yylloc])dnl
-m4_pushdef([b4_dollar_dollar], [m4_define([b4_dollar_dollar_used])yylval])dnl
+]m4_ifdef([b4_initial_action], [
+b4_dollar_pushdef([m4_define([b4_dollar_dollar_used])yylval], [],
+                  [b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])])dnl

 /* User initialization code.  */
 b4_user_initial_action
 /* User initialization code.  */
 b4_user_initial_action

-m4_popdef([b4_dollar_dollar])dnl
-m4_popdef([b4_at_dollar])])dnl
+b4_dollar_popdef[]dnl

 m4_ifdef([b4_dollar_dollar_used],[[  yyvsp[0] = yylval;
 m4_ifdef([b4_dollar_dollar_used],[[  yyvsp[0] = yylval;

+]])])dnl
+b4_locations_if([[  yylsp[0] = ]b4_push_if([b4_pure_if([*])yypushed_loc], [yylloc])[;

 ]])dnl
 ]])dnl

-m4_ifdef([b4_at_dollar_used], [[  yylsp[0] = yylloc;
-]])[
-  goto yysetstate;
+[  goto yysetstate;

 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |
 
 /*------------------------------------------------------------.
 | yynewstate -- Push a new state, which is found in yystate.  |


@@ -1651,7 +1560,7 @@ yyread_pushed_token:]])[
         yylval = *yypushed_val;]b4_locations_if([[
       if (yypushed_loc)
         yylloc = *yypushed_loc;]])])], [[
         yylval = *yypushed_val;]b4_locations_if([[
       if (yypushed_loc)
         yylloc = *yypushed_loc;]])])], [[

-      yychar = YYLEX;]])[
+      yychar = ]b4_lex[;]])[

     }
 
   if (yychar <= YYEOF)
     }
 
   if (yychar <= YYEOF)


@@ -1697,7 +1606,9 @@ yyread_pushed_token:]])[
   YY_LAC_DISCARD ("shift");]])[
 
   yystate = yyn;
   YY_LAC_DISCARD ("shift");]])[
 
   yystate = yyn;

+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN

   *++yyvsp = yylval;
   *++yyvsp = yylval;

+  YY_IGNORE_MAYBE_UNINITIALIZED_END

 ]b4_locations_if([  *++yylsp = yylloc;])[
   goto yynewstate;
 
 ]b4_locations_if([  *++yylsp = yylloc;])[
   goto yynewstate;
 


@@ -1720,7 +1631,7 @@ yyreduce:
   yylen = yyr2[yyn];
 
   /* If YYLEN is nonzero, implement the default value of the action:
   yylen = yyr2[yyn];
 
   /* If YYLEN is nonzero, implement the default value of the action:

-     `$$ = $1'.
+     '$$ = $1'.

 
      Otherwise, the following line sets YYVAL to garbage.
      This behavior is undocumented and Bison
 
      Otherwise, the following line sets YYVAL to garbage.
      This behavior is undocumented and Bison


@@ -1768,7 +1679,7 @@ yyreduce:
   *++yyvsp = yyval;]b4_locations_if([
   *++yylsp = yyloc;])[
 
   *++yyvsp = yyval;]b4_locations_if([
   *++yylsp = yyloc;])[
 

-  /* Now `shift' the result of the reduction.  Determine what state
+  /* Now 'shift' the result of the reduction.  Determine what state

      that goes to, based on the state we popped back to and the rule
      number reduced by.  */
 
      that goes to, based on the state we popped back to and the rule
      number reduced by.  */
 


@@ -1783,9 +1694,9 @@ yyreduce:
   goto yynewstate;
 
 
   goto yynewstate;
 
 

-/*------------------------------------.
-| yyerrlab -- here on detecting error |
-`------------------------------------*/
+/*--------------------------------------.
+| yyerrlab -- here on detecting error.  |
+`--------------------------------------*/

 yyerrlab:
   /* Make sure we have latest lookahead translation.  See comments at
      user semantic actions for why this is necessary.  */
 yyerrlab:
   /* Make sure we have latest lookahead translation.  See comments at
      user semantic actions for why this is necessary.  */


@@ -1872,7 +1783,7 @@ yyerrorlab:
      goto yyerrorlab;
 
 ]b4_locations_if([[  yyerror_range[1] = yylsp[1-yylen];
      goto yyerrorlab;
 
 ]b4_locations_if([[  yyerror_range[1] = yylsp[1-yylen];

-]])[  /* Do not reclaim the symbols of the rule which action triggered
+]])[  /* Do not reclaim the symbols of the rule whose action triggered

      this YYERROR.  */
   YYPOPSTACK (yylen);
   yylen = 0;
      this YYERROR.  */
   YYPOPSTACK (yylen);
   yylen = 0;


@@ -1917,7 +1828,9 @@ yyerrlab1:
      current lookahead token, the shift below will for sure.  */
   YY_LAC_DISCARD ("error recovery");]])[
 
      current lookahead token, the shift below will for sure.  */
   YY_LAC_DISCARD ("error recovery");]])[
 

+  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN

   *++yyvsp = yylval;
   *++yyvsp = yylval;

+  YY_IGNORE_MAYBE_UNINITIALIZED_END

 ]b4_locations_if([[
   yyerror_range[2] = yylloc;
   /* Using YYLLOC is tempting, but would change the location of
 ]b4_locations_if([[
   yyerror_range[2] = yylloc;
   /* Using YYLLOC is tempting, but would change the location of


@@ -1965,7 +1878,7 @@ yyreturn:
       yydestruct ("Cleanup: discarding lookahead",
                   yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
     }
       yydestruct ("Cleanup: discarding lookahead",
                   yytoken, &yylval]b4_locations_if([, &yylloc])[]b4_user_args[);
     }

-  /* Do not reclaim the symbols of the rule which action triggered
+  /* Do not reclaim the symbols of the rule whose action triggered

      this YYABORT or YYACCEPT.  */
   YYPOPSTACK (yylen);
   YY_STACK_PRINT (yyss, yyssp);
      this YYABORT or YYACCEPT.  */
   YYPOPSTACK (yylen);
   YY_STACK_PRINT (yyss, yyssp);


@@ -1988,16 +1901,15 @@ yypushreturn:]])[
   if (yymsg != yymsgbuf)
     YYSTACK_FREE (yymsg);
 #endif
   if (yymsg != yymsgbuf)
     YYSTACK_FREE (yymsg);
 #endif

-  /* Make sure YYID is used.  */
-  return YYID (yyresult);
+  return yyresult;

 }
 }

-

 ]b4_epilogue[]dnl
 ]b4_epilogue[]dnl

+b4_output_end()
+

 b4_defines_if(
 b4_defines_if(

-[@output(b4_spec_defines_file@)@
-b4_copyright([Bison interface for Yacc-like parsers in C])[
+[b4_output_begin([b4_spec_defines_file])[
+]b4_copyright([Bison interface for Yacc-like parsers in C])[

 
 ]b4_shared_declarations[
 
 ]b4_shared_declarations[

-]])dnl b4_defines_if
-m4_divert_pop(0)
-m4_popdef([b4_copyright_years])
+]b4_output_end()
+])# b4_defines_if