* src/assoc.c (assoc_to_string): Use a default: abort (); case

[bison.git] / data / glr.c

diff --git a/data/glr.c b/data/glr.c
index bed1521455c0ac7fdcaf192f5b3841705d609296..0c1faedd8fff402b192943632b5d87d7b92c45ea 100644 (file)
--- a/data/glr.c
+++ b/data/glr.c
@@ -1,7 +1,7 @@
 m4_divert(-1)                                                       -*- C -*-
 
 # GLR skeleton for Bison
 m4_divert(-1)                                                       -*- C -*-
 
 # GLR skeleton for Bison

-# Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.

 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 
 # 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


@@ -15,10 +15,12 @@ m4_divert(-1)                                                       -*- C -*-
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software

-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307  USA
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301  USA

 
 
 
 

+m4_include(b4_pkgdatadir/[c.m4])
+

 ## ---------------- ##
 ## Default values.  ##
 ## ---------------- ##
 ## ---------------- ##
 ## Default values.  ##
 ## ---------------- ##


@@ -34,25 +36,30 @@ m4_define_default([b4_stack_depth_init],  [200])
 ## ------------------------ ##
 
 
 ## ------------------------ ##
 
 

+# b4_user_formals
+# ---------------
+# The possible parse-params formal arguments preceded by a comma.
+#
+# This is not shared with yacc.c in c.m4 because  GLR relies on ISO C
+# formal argument declarations.
+m4_define([b4_user_formals],
+[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
+
+

 # b4_lex_param
 # ------------
 # Accumule in b4_lex_param all the yylex arguments.
 # Yes, this is quite ugly...
 m4_define([b4_lex_param],
 # b4_lex_param
 # ------------
 # Accumule in b4_lex_param all the yylex arguments.
 # Yes, this is quite ugly...
 m4_define([b4_lex_param],

-m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[yylvalp]]][]dnl
-b4_location_if([, [[YYLTYPE *], [yyllocp]]])])dnl
+m4_dquote(b4_pure_if([[[[YYSTYPE *]], [[&yylval]]][]dnl
+b4_location_if([, [[YYLTYPE *], [&yylloc]]])])dnl

 m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
 
 
 m4_ifdef([b4_lex_param], [, ]b4_lex_param)))
 
 

-# b4_user_formals
-# ---------------
-m4_define([b4_user_formals],
-[m4_ifset([b4_parse_param], [, b4_c_ansi_formals(b4_parse_param)])])
-
-

 # b4_yyerror_args
 # ---------------
 # b4_yyerror_args
 # ---------------

-# Arguments passed to yyerror: user args plus yylloc.
+# Optional effective arguments passed to yyerror: user args plus yylloc, and
+# a trailing comma.

 m4_define([b4_yyerror_args],
 [b4_pure_if([b4_location_if([yylocp, ])])dnl
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 m4_define([b4_yyerror_args],
 [b4_pure_if([b4_location_if([yylocp, ])])dnl
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])


@@ -60,38 +67,31 @@ m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 # b4_lyyerror_args
 # ----------------
 
 # b4_lyyerror_args
 # ----------------

-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+# Same as above, but on the look-ahead, hence &yylloc instead of yylocp.

 m4_define([b4_lyyerror_args],
 m4_define([b4_lyyerror_args],

-[b4_pure_if([b4_location_if([yyllocp, ])])dnl
+[b4_pure_if([b4_location_if([&yylloc, ])])dnl

 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 
 # b4_pure_args
 # ------------
 m4_ifset([b4_parse_param], [b4_c_args(b4_parse_param), ])])
 
 
 # b4_pure_args
 # ------------

-# Arguments needed by yyerror: user args plus yylloc.
+# Same as b4_yyerror_args, but with a leading comma.

 m4_define([b4_pure_args],
 [b4_pure_if([b4_location_if([, yylocp])])[]b4_user_args])
 
 
 m4_define([b4_pure_args],
 [b4_pure_if([b4_location_if([, yylocp])])[]b4_user_args])
 
 

-# b4_pure_formals
-# ---------------
-# Arguments passed to yyerror: user formals plus yyllocp.
-m4_define([b4_pure_formals],
-[b4_pure_if([b4_location_if([, YYLTYPE *yylocp])])[]b4_user_formals])
-
-

 # b4_lpure_args
 # -------------
 # b4_lpure_args
 # -------------

-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
+# Same as above, but on the look-ahead, hence &yylloc instead of yylocp.

 m4_define([b4_lpure_args],
 m4_define([b4_lpure_args],

-[b4_pure_if([b4_location_if([, yyllocp])])[]b4_user_args])
+[b4_pure_if([b4_location_if([, &yylloc])])[]b4_user_args])

 
 
 
 

-# b4_lpure_formals
-# ----------------
-# Same as above, but on the look-ahead, hence yyllocp instead of yylocp.
-m4_define([b4_lpure_formals],
-[b4_pure_if([b4_location_if([YYLTYPE *yyllocp])])[]b4_user_formals])
+# b4_pure_formals
+# ---------------
+# Arguments passed to yyerror: user formals plus yylocp.
+m4_define([b4_pure_formals],
+[b4_pure_if([b4_location_if([, YYLTYPE *yylocp])])[]b4_user_formals])

 
 
 ## ----------------- ##
 
 
 ## ----------------- ##


@@ -111,7 +111,7 @@ m4_define([b4_lhs_value],
 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
 # symbols on RHS.
 m4_define([b4_rhs_value],
 # Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
 # symbols on RHS.
 m4_define([b4_rhs_value],

-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])
+[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))])

 
 
 
 
 
 


@@ -131,23 +131,25 @@ m4_define([b4_lhs_location],
 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
 # on RHS.
 m4_define([b4_rhs_location],
 # Expansion of @NUM, where the current rule has RULE-LENGTH symbols
 # on RHS.
 m4_define([b4_rhs_location],

-[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc)])
+[(((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate.yyloc)])
+
+
+
+## -------------- ##
+## Output files.  ##
+## -------------- ##

 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert(0)dnl
 @output @output_parser_name@
 
 # We do want M4 expansion after # for CPP macros.
 m4_changecom()
 m4_divert(0)dnl
 @output @output_parser_name@

-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004])
+b4_copyright([Skeleton parser for GLR parsing with Bison],
+  [2002, 2003, 2004, 2005, 2006])

 [
 [

-/* This is the parser code for GLR (Generalized LR) parser. */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <setjmp.h>
+/* This is the parser code for GLR (Generalized LR) parser.  */

 
 ]b4_identification
 
 ]b4_identification

+

 m4_if(b4_prefix[], [yy], [],
 [/* Substitute the variable and function names.  */
 #define yyparse b4_prefix[]parse
 m4_if(b4_prefix[], [yy], [],
 [/* Substitute the variable and function names.  */
 #define yyparse b4_prefix[]parse


@@ -157,38 +159,31 @@ m4_if(b4_prefix[], [yy], [],
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs
 #define yychar  b4_prefix[]char
 #define yydebug b4_prefix[]debug
 #define yynerrs b4_prefix[]nerrs

-#define yylloc b4_prefix[]lloc])
+#define yylloc  b4_prefix[]lloc])

 
 

-b4_token_defines(b4_tokens)
+dnl # b4_shared_declarations
+dnl # ----------------------
+dnl # Declaration that might either go into the header (if --defines)
+dnl # or open coded in the parser body.
+m4_define([b4_shared_declarations],
+[b4_token_enums(b4_tokens)[

 
 /* Copy the first part of user declarations.  */
 
 /* Copy the first part of user declarations.  */

-b4_pre_prologue[
-
-/* Enabling traces.  */
-#ifndef YYDEBUG
-# define YYDEBUG ]b4_debug[
-#endif
+]b4_pre_prologue[

 
 

-/* Enabling verbose error messages.  */
-#ifdef YYERROR_VERBOSE
-# undef YYERROR_VERBOSE
-# define YYERROR_VERBOSE 1
-#else
-# define YYERROR_VERBOSE ]b4_error_verbose[
-#endif
-
-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
+#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED

 ]m4_ifdef([b4_stype],
 ]m4_ifdef([b4_stype],

-[b4_syncline([b4_stype_line], [b4_filename])
-typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
+[typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])
+b4_stype

 /* Line __line__ of glr.c.  */
 /* Line __line__ of glr.c.  */

-b4_syncline([@oline@], [@ofile@])],
+b4_syncline([@oline@], [@ofile@])
+       YYSTYPE;],

 [typedef int YYSTYPE;])[
 # define YYSTYPE_IS_DECLARED 1
 # define YYSTYPE_IS_TRIVIAL 1
 #endif
 
 [typedef int YYSTYPE;])[
 # define YYSTYPE_IS_DECLARED 1
 # define YYSTYPE_IS_TRIVIAL 1
 #endif
 

-#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
+#if ! defined YYLTYPE && ! defined YYLTYPE_IS_DECLARED

 typedef struct YYLTYPE
 {
 ]b4_location_if([
 typedef struct YYLTYPE
 {
 ]b4_location_if([


@@ -203,12 +198,35 @@ typedef struct YYLTYPE
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 #endif
 # define YYLTYPE_IS_DECLARED 1
 # define YYLTYPE_IS_TRIVIAL 1
 #endif

+]])
+
+m4_if(b4_defines_flag, 0,
+      [b4_shared_declarations],
+      [#include @output_header_name@])[
+
+/* Enabling traces.  */
+#ifndef YYDEBUG
+# define YYDEBUG ]b4_debug[
+#endif
+
+/* Enabling verbose error messages.  */
+#ifdef YYERROR_VERBOSE
+# undef YYERROR_VERBOSE
+# define YYERROR_VERBOSE 1
+#else
+# define YYERROR_VERBOSE ]b4_error_verbose[
+#endif
+
+/* Enabling the token table.  */
+#ifndef YYTOKEN_TABLE
+# define YYTOKEN_TABLE ]b4_token_table[
+#endif

 
 /* Default (constant) value used for initialization for null
    right-hand sides.  Unlike the standard yacc.c template,
    here we set the default value of $$ to a zeroed-out value.
    Since the default value is undefined, this behavior is
 
 /* Default (constant) value used for initialization for null
    right-hand sides.  Unlike the standard yacc.c template,
    here we set the default value of $$ to a zeroed-out value.
    Since the default value is undefined, this behavior is

-   technically correct. */
+   technically correct.  */

 static YYSTYPE yyval_default;
 
 /* Copy the second part of user declarations.  */
 static YYSTYPE yyval_default;
 
 /* Copy the second part of user declarations.  */


@@ -217,6 +235,40 @@ static YYSTYPE yyval_default;
 ]/* Line __line__ of glr.c.  */
 b4_syncline([@oline@], [@ofile@])
 [
 ]/* Line __line__ of glr.c.  */
 b4_syncline([@oline@], [@ofile@])
 [

+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+
+#ifndef YY_
+# if 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
+]b4_c_function_def([YYID], [static int], [[int i], [i]])[
+{
+  return i;
+}
+#endif
+

 #ifndef YYFREE
 # define YYFREE free
 #endif
 #ifndef YYFREE
 # define YYFREE free
 #endif


@@ -227,6 +279,8 @@ b4_syncline([@oline@], [@ofile@])
 # define YYREALLOC realloc
 #endif
 
 # define YYREALLOC realloc
 #endif
 

+#define YYSIZEMAX ((size_t) -1)
+

 #ifdef __cplusplus
    typedef bool yybool;
 #else
 #ifdef __cplusplus
    typedef bool yybool;
 #else


@@ -235,43 +289,53 @@ b4_syncline([@oline@], [@ofile@])
 #define yytrue 1
 #define yyfalse 0
 
 #define yytrue 1
 #define yyfalse 0
 

+#ifndef YYSETJMP
+# include <setjmp.h>
+# define YYJMP_BUF jmp_buf
+# define YYSETJMP(env) setjmp (env)
+# define YYLONGJMP(env, val) longjmp (env, val)
+#endif
+

 /*-----------------.
 | GCC extensions.  |
 `-----------------*/
 
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */
 /*-----------------.
 | GCC extensions.  |
 `-----------------*/
 
 #ifndef __attribute__
 /* This feature is available in gcc versions 2.5 and later.  */

-# if !defined (__GNUC__) || __GNUC__ < 2 || \
-(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__
+# if (! defined __GNUC__ || __GNUC__ < 2 \
+      || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__)

 #  define __attribute__(Spec) /* empty */
 # endif
 #endif
 
 #  define __attribute__(Spec) /* empty */
 # endif
 #endif
 

+]b4_location_if([#define YYOPTIONAL_LOC(Name) Name],[
+#ifdef __cplusplus
+# define YYOPTIONAL_LOC(Name) /* empty */
+#else
+# define YYOPTIONAL_LOC(Name) Name __attribute__ ((__unused__))
+#endif])[
+

 #ifndef YYASSERT
 # define YYASSERT(condition) ((void) ((condition) || (abort (), 0)))
 #endif
 
 #ifndef YYASSERT
 # define YYASSERT(condition) ((void) ((condition) || (abort (), 0)))
 #endif
 

-#ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
-#endif
-
-/* YYFINAL -- State number of the termination state. */
+/* YYFINAL -- State number of the termination state.  */

 #define YYFINAL  ]b4_final_state_number[
 /* YYLAST -- Last index in YYTABLE.  */
 #define YYLAST   ]b4_last[
 
 #define YYFINAL  ]b4_final_state_number[
 /* YYLAST -- Last index in YYTABLE.  */
 #define YYLAST   ]b4_last[
 

-/* YYNTOKENS -- Number of terminals. */
+/* YYNTOKENS -- Number of terminals.  */

 #define YYNTOKENS  ]b4_tokens_number[
 #define YYNTOKENS  ]b4_tokens_number[

-/* YYNNTS -- Number of nonterminals. */
+/* YYNNTS -- Number of nonterminals.  */

 #define YYNNTS  ]b4_nterms_number[
 #define YYNNTS  ]b4_nterms_number[

-/* YYNRULES -- Number of rules. */
+/* YYNRULES -- Number of rules.  */

 #define YYNRULES  ]b4_rules_number[
 #define YYNRULES  ]b4_rules_number[

-/* YYNRULES -- Number of states. */
+/* YYNRULES -- Number of states.  */

 #define YYNSTATES  ]b4_states_number[
 #define YYNSTATES  ]b4_states_number[

-/* YYMAXRHS -- Maximum number of symbols on right-hand side of rule. */
+/* YYMAXRHS -- Maximum number of symbols on right-hand side of rule.  */

 #define YYMAXRHS ]b4_r2_max[
 /* YYMAXLEFT -- Maximum number of symbols to the left of a handle
 #define YYMAXRHS ]b4_r2_max[
 /* YYMAXLEFT -- Maximum number of symbols to the left of a handle

-   accessed by $0, $-1, etc., in any rule. */
+   accessed by $0, $-1, etc., in any rule.  */

 #define YYMAXLEFT ]b4_max_left_semantic_context[
 
 /* YYTRANSLATE(X) -- Bison symbol number corresponding to X.  */
 #define YYMAXLEFT ]b4_max_left_semantic_context[
 
 /* YYTRANSLATE(X) -- Bison symbol number corresponding to X.  */


@@ -296,7 +360,7 @@ static const ]b4_int_type_for([b4_prhs])[ yyprhs[] =
   ]b4_prhs[
 };
 
   ]b4_prhs[
 };
 

-/* YYRHS -- A `-1'-separated list of the rules' RHS. */
+/* YYRHS -- A `-1'-separated list of the rules' RHS.  */

 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
 {
   ]b4_rhs[
 static const ]b4_int_type_for([b4_rhs])[ yyrhs[] =
 {
   ]b4_rhs[


@@ -309,9 +373,9 @@ static const ]b4_int_type_for([b4_rline])[ yyrline[] =
 };
 #endif
 
 };
 #endif
 

-#if (YYDEBUG) || YYERROR_VERBOSE
-/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
-   First, the terminals, then, starting at YYNTOKENS, nonterminals. */
+#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE
+/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+   First, the terminals, then, starting at YYNTOKENS, nonterminals.  */

 static const char *const yytname[] =
 {
   ]b4_tname[
 static const char *const yytname[] =
 {
   ]b4_tname[


@@ -330,13 +394,13 @@ static const ]b4_int_type_for([b4_r2])[ yyr2[] =
   ]b4_r2[
 };
 
   ]b4_r2[
 };
 

-/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none). */
+/* YYDPREC[RULE-NUM] -- Dynamic precedence of rule #RULE-NUM (0 if none).  */

 static const ]b4_int_type_for([b4_dprec])[ yydprec[] =
 {
   ]b4_dprec[
 };
 
 static const ]b4_int_type_for([b4_dprec])[ yydprec[] =
 {
   ]b4_dprec[
 };
 

-/* YYMERGER[RULE-NUM] -- Index of merging function for rule #RULE-NUM. */
+/* YYMERGER[RULE-NUM] -- Index of merging function for rule #RULE-NUM.  */

 static const ]b4_int_type_for([b4_merger])[ yymerger[] =
 {
   ]b4_merger[
 static const ]b4_int_type_for([b4_merger])[ yymerger[] =
 {
   ]b4_merger[


@@ -350,7 +414,7 @@ static const ]b4_int_type_for([b4_defact])[ yydefact[] =
   ]b4_defact[
 };
 
   ]b4_defact[
 };
 

-/* YYPDEFGOTO[NTERM-NUM]. */
+/* YYPDEFGOTO[NTERM-NUM].  */

 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
 {
   ]b4_defgoto[
 static const ]b4_int_type_for([b4_defgoto])[ yydefgoto[] =
 {
   ]b4_defgoto[


@@ -427,21 +491,21 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =
 #ifndef YYLLOC_DEFAULT
 # define YYLLOC_DEFAULT(Current, Rhs, N)                               \
     do                                                                 \
 #ifndef YYLLOC_DEFAULT
 # define YYLLOC_DEFAULT(Current, Rhs, N)                               \
     do                                                                 \

-      if (N)                                                           \
+      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;        \
+         (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   =              \
        }                                                               \
       else                                                             \
        {                                                               \
          (Current).first_line   = (Current).last_line   =              \

-           YYRHSLOC(Rhs, 0).last_line;                                 \
+           YYRHSLOC (Rhs, 0).last_line;                                \

          (Current).first_column = (Current).last_column =              \
          (Current).first_column = (Current).last_column =              \

-           YYRHSLOC(Rhs, 0).last_column;                               \
+           YYRHSLOC (Rhs, 0).last_column;                              \

        }                                                               \
        }                                                               \

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

 
 /* YY_LOCATION_PRINT -- Print the location on the stream.
    This macro was not mandated originally: define only if we know
 
 /* YY_LOCATION_PRINT -- Print the location on the stream.
    This macro was not mandated originally: define only if we know


@@ -449,8 +513,8 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =
 
 # define YY_LOCATION_PRINT(File, Loc)                  \
     fprintf (File, "%d.%d-%d.%d",                      \
 
 # define YY_LOCATION_PRINT(File, Loc)                  \
     fprintf (File, "%d.%d-%d.%d",                      \

-             (Loc).first_line, (Loc).first_column,     \
-             (Loc).last_line,  (Loc).last_column)
+            (Loc).first_line, (Loc).first_column,      \
+            (Loc).last_line,  (Loc).last_column)

 #endif
 ]],[
 #ifndef YYLLOC_DEFAULT
 #endif
 ]],[
 #ifndef YYLLOC_DEFAULT


@@ -469,9 +533,18 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] =
 ]b4_pure_if(
 [
 #undef yynerrs
 ]b4_pure_if(
 [
 #undef yynerrs

-#define yynerrs (yystack->yyerrcnt)
+#define yynerrs (yystackp->yyerrcnt)

 #undef yychar
 #undef yychar

-#define yychar (yystack->yyrawchar)],
+#define yychar (yystackp->yyrawchar)
+#undef yylval
+#define yylval (yystackp->yyval)
+#undef yylloc
+#define yylloc (yystackp->yyloc)
+m4_if(b4_prefix[], [yy], [],
+[#define b4_prefix[]nerrs yynerrs
+#define b4_prefix[]char yychar
+#define b4_prefix[]lval yylval
+#define b4_prefix[]lloc yylloc])],

 [YYSTYPE yylval;
 
 YYLTYPE yylloc;
 [YYSTYPE yylval;
 
 YYLTYPE yylloc;


@@ -486,32 +559,32 @@ typedef enum { yyok, yyaccept, yyabort, yyerr } YYRESULTTAG;
 
 #define YYCHK(YYE)                                                          \
    do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; }      \
 
 #define YYCHK(YYE)                                                          \
    do { YYRESULTTAG yyflag = YYE; if (yyflag != yyok) return yyflag; }      \

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

 
 #if YYDEBUG
 
 
 #if YYDEBUG
 

-#if ! defined (YYFPRINTF)
+# ifndef YYFPRINTF

 #  define YYFPRINTF fprintf
 #  define YYFPRINTF fprintf

-#endif
+# endif

 
 # define YYDPRINTF(Args)                       \
 do {                                           \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \
 
 # define YYDPRINTF(Args)                       \
 do {                                           \
   if (yydebug)                                 \
     YYFPRINTF Args;                            \

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

 
 

-]b4_yysymprint_generate([b4_c_ansi_function_def])[
+]b4_yy_symbol_print_generate([b4_c_ansi_function_def])[

 
 

-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)         \
-do {                                                           \
-  if (yydebug)                                                 \
-    {                                                          \
-      YYFPRINTF (stderr, "%s ", Title);                                \
-      yysymprint (stderr,                                      \
-                  Type, Value]b4_location_if([, Location])[);  \
-      YYFPRINTF (stderr, "\n");                                        \
-    }                                                          \
-} while (0)
+# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                     \
+do {                                                                       \
+  if (yydebug)                                                             \
+    {                                                                      \
+      YYFPRINTF (stderr, "%s ", Title);                                            \
+      yy_symbol_print (stderr, Type,                                       \
+                      Value]b4_location_if([, Location])[]b4_user_args[);  \
+      YYFPRINTF (stderr, "\n");                                                    \
+    }                                                                      \
+} while (YYID (0))

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


@@ -536,30 +609,114 @@ int yydebug;
    SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem)
    evaluated with infinite-precision integer arithmetic.  */
 
    SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem)
    evaluated with infinite-precision integer arithmetic.  */
 

-#if YYMAXDEPTH == 0
-# undef YYMAXDEPTH
-#endif
-

 #ifndef YYMAXDEPTH
 # define YYMAXDEPTH ]b4_stack_depth_max[
 #endif
 
 /* Minimum number of free items on the stack allowed after an
    allocation.  This is to allow allocation and initialization
 #ifndef YYMAXDEPTH
 # define YYMAXDEPTH ]b4_stack_depth_max[
 #endif
 
 /* Minimum number of free items on the stack allowed after an
    allocation.  This is to allow allocation and initialization

-   to be completed by functions that call expandGLRStack before the
+   to be completed by functions that call yyexpandGLRStack before the

    stack is expanded, thus insuring that all necessary pointers get
    stack is expanded, thus insuring that all necessary pointers get

-   properly redirected to new data. */
+   properly redirected to new data.  */

 #define YYHEADROOM 2
 
 #define YYHEADROOM 2
 

-#if (! defined (YYSTACKEXPANDABLE) \
-     && (! defined (__cplusplus) \
-        || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \
-            && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)))
-#define YYSTACKEXPANDABLE 1
+#ifndef YYSTACKEXPANDABLE
+# if (! defined __cplusplus \
+      || (]b4_location_if([[defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL \
+         && ]])[defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))
+#  define YYSTACKEXPANDABLE 1
+# else
+#  define YYSTACKEXPANDABLE 0
+# endif
+#endif
+
+#if YYSTACKEXPANDABLE
+# define YY_RESERVE_GLRSTACK(Yystack)                  \
+  do {                                                 \
+    if (Yystack->yyspaceLeft < YYHEADROOM)             \
+      yyexpandGLRStack (Yystack);                      \
+  } while (YYID (0))

 #else
 #else

-#define YYSTACKEXPANDABLE 0
+# define YY_RESERVE_GLRSTACK(Yystack)                  \
+  do {                                                 \
+    if (Yystack->yyspaceLeft < YYHEADROOM)             \
+      yyMemoryExhausted (Yystack);                     \
+  } while (YYID (0))

 #endif
 
 #endif
 

+
+#if YYERROR_VERBOSE
+
+# ifndef yystpcpy
+#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
+#   define yystpcpy stpcpy
+#  else
+/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+   YYDEST.  */
+static char *
+yystpcpy (char *yydest, const char *yysrc)
+{
+  char *yyd = yydest;
+  const char *yys = yysrc;
+
+  while ((*yyd++ = *yys++) != '\0')
+    continue;
+
+  return yyd - 1;
+}
+#  endif
+# endif
+
+# ifndef yytnamerr
+/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+   quotes and backslashes, so that it's suitable for yyerror.  The
+   heuristic is that double-quoting is unnecessary unless the string
+   contains an apostrophe, a comma, or backslash (other than
+   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
+   null, do not copy; instead, return the length of what the result
+   would have been.  */
+static size_t
+yytnamerr (char *yyres, const char *yystr)
+{
+  if (*yystr == '"')
+    {
+      size_t yyn = 0;
+      char const *yyp = yystr;
+
+      for (;;)
+       switch (*++yyp)
+         {
+         case '\'':
+         case ',':
+           goto do_not_strip_quotes;
+
+         case '\\':
+           if (*++yyp != '\\')
+             goto do_not_strip_quotes;
+           /* Fall through.  */
+         default:
+           if (yyres)
+             yyres[yyn] = *yyp;
+           yyn++;
+           break;
+
+         case '"':
+           if (yyres)
+             yyres[yyn] = '\0';
+           return yyn;
+         }
+    do_not_strip_quotes: ;
+    }
+
+  if (! yyres)
+    return strlen (yystr);
+
+  return yystpcpy (yyres, yystr) - yyres;
+}
+# endif
+
+#endif /* !YYERROR_VERBOSE */
+

 /** State numbers, as in LALR(1) machine */
 typedef int yyStateNum;
 
 /** State numbers, as in LALR(1) machine */
 typedef int yyStateNum;
 


@@ -573,43 +730,69 @@ typedef short int yySymbol;
 typedef short int yyItemNum;
 
 typedef struct yyGLRState yyGLRState;
 typedef short int yyItemNum;
 
 typedef struct yyGLRState yyGLRState;

+typedef struct yyGLRStateSet yyGLRStateSet;

 typedef struct yySemanticOption yySemanticOption;
 typedef union yyGLRStackItem yyGLRStackItem;
 typedef struct yyGLRStack yyGLRStack;
 typedef struct yySemanticOption yySemanticOption;
 typedef union yyGLRStackItem yyGLRStackItem;
 typedef struct yyGLRStack yyGLRStack;

-typedef struct yyGLRStateSet yyGLRStateSet;

 
 struct yyGLRState {
 
 struct yyGLRState {

+  /** Type tag: always true.  */

   yybool yyisState;
   yybool yyisState;

+  /** Type tag for yysemantics.  If true, yysval applies, otherwise
+   *  yyfirstVal applies.  */

   yybool yyresolved;
   yybool yyresolved;

+  /** Number of corresponding LALR(1) machine state.  */

   yyStateNum yylrState;
   yyStateNum yylrState;

+  /** Preceding state in this stack */

   yyGLRState* yypred;
   yyGLRState* yypred;

+  /** Source position of the first token produced by my symbol */

   size_t yyposn;
   union {
   size_t yyposn;
   union {

+    /** First in a chain of alternative reductions producing the
+     *  non-terminal corresponding to this state, threaded through
+     *  yynext.  */

     yySemanticOption* yyfirstVal;
     yySemanticOption* yyfirstVal;

+    /** Semantic value for this state.  */

     YYSTYPE yysval;
   } yysemantics;
     YYSTYPE yysval;
   } yysemantics;

+  /** Source location for this state.  */

   YYLTYPE yyloc;
 };
 
 struct yyGLRStateSet {
   yyGLRState** yystates;
   YYLTYPE yyloc;
 };
 
 struct yyGLRStateSet {
   yyGLRState** yystates;

+  /** During nondeterministic operation, yylookaheadNeeds tracks which
+   *  stacks have actually needed the current lookahead.  During deterministic
+   *  operation, yylookaheadNeeds[0] is not maintained since it would merely
+   *  duplicate yychar != YYEMPTY.  */
+  yybool* yylookaheadNeeds;

   size_t yysize, yycapacity;
 };
 
 struct yySemanticOption {
   size_t yysize, yycapacity;
 };
 
 struct yySemanticOption {

+  /** Type tag: always false.  */

   yybool yyisState;
   yybool yyisState;

+  /** Rule number for this reduction */

   yyRuleNum yyrule;
   yyRuleNum yyrule;

+  /** The last RHS state in the list of states to be reduced.  */

   yyGLRState* yystate;
   yyGLRState* yystate;

+  /** The lookahead for this reduction.  */
+  int yyrawchar;
+  YYSTYPE yyval;
+  YYLTYPE yyloc;
+  /** Next sibling in chain of options.  To facilitate merging,
+   *  options are chained in decreasing order by address.  */

   yySemanticOption* yynext;
 };
 
   yySemanticOption* yynext;
 };
 

+/** Type of the items in the GLR stack.  The yyisState field
+ *  indicates which item of the union is valid.  */

 union yyGLRStackItem {
   yyGLRState yystate;
   yySemanticOption yyoption;
 };
 
 struct yyGLRStack {
 union yyGLRStackItem {
   yyGLRState yystate;
   yySemanticOption yyoption;
 };
 
 struct yyGLRStack {

-  int yyerrflag;

   int yyerrState;
 ]b4_location_if([[  /* To compute the location of the error token.  */
   yyGLRStackItem yyerror_range[3];]])[
   int yyerrState;
 ]b4_location_if([[  /* To compute the location of the error token.  */
   yyGLRStackItem yyerror_range[3];]])[


@@ -617,39 +800,43 @@ struct yyGLRStack {
 [
   int yyerrcnt;
   int yyrawchar;
 [
   int yyerrcnt;
   int yyrawchar;

+  YYSTYPE yyval;
+  YYLTYPE yyloc;

 ])[
   yySymbol* yytokenp;
 ])[
   yySymbol* yytokenp;

-  jmp_buf yyexception_buffer;
+  YYJMP_BUF yyexception_buffer;

   yyGLRStackItem* yyitems;
   yyGLRStackItem* yynextFree;
   yyGLRStackItem* yyitems;
   yyGLRStackItem* yynextFree;

-  int yyspaceLeft;
+  size_t yyspaceLeft;

   yyGLRState* yysplitPoint;
   yyGLRState* yylastDeleted;
   yyGLRStateSet yytops;
 };
 
   yyGLRState* yysplitPoint;
   yyGLRState* yylastDeleted;
   yyGLRStateSet yytops;
 };
 

-static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize);
-static void yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[);
-static void yyfreeGLRStack (yyGLRStack* yystack);
+#if YYSTACKEXPANDABLE
+static void yyexpandGLRStack (yyGLRStack* yystackp);
+#endif

 
 

+static void yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)
+  __attribute__ ((__noreturn__));

 static void
 static void

-yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yyformat, ...)
+yyFail (yyGLRStack* yystackp]b4_pure_formals[, const char* yymsg)

 {
 {

-  yystack->yyerrflag = 1;
-  if (yyformat != NULL)
-    {
-      char yymsg[256];
-      va_list yyap;
-      va_start (yyap, yyformat);
-      vsprintf (yymsg, yyformat, yyap);
-      yyerror (]b4_yyerror_args[yymsg);
-    }
-  longjmp (yystack->yyexception_buffer, 1);
+  if (yymsg != NULL)
+    yyerror (]b4_yyerror_args[yymsg);
+  YYLONGJMP (yystackp->yyexception_buffer, 1);
+}
+
+static void yyMemoryExhausted (yyGLRStack* yystackp)
+  __attribute__ ((__noreturn__));
+static void
+yyMemoryExhausted (yyGLRStack* yystackp)
+{
+  YYLONGJMP (yystackp->yyexception_buffer, 2);

 }
 
 #if YYDEBUG || YYERROR_VERBOSE
 }
 
 #if YYDEBUG || YYERROR_VERBOSE

-/** A printable representation of TOKEN.  Valid until next call to
- *  tokenName. */
+/** A printable representation of TOKEN.  */

 static inline const char*
 yytokenName (yySymbol yytoken)
 {
 static inline const char*
 yytokenName (yySymbol yytoken)
 {


@@ -662,9 +849,8 @@ yytokenName (yySymbol yytoken)
 
 /** Fill in YYVSP[YYLOW1 .. YYLOW0-1] from the chain of states starting
  *  at YYVSP[YYLOW0].yystate.yypred.  Leaves YYVSP[YYLOW1].yystate.yypred
 
 /** Fill in YYVSP[YYLOW1 .. YYLOW0-1] from the chain of states starting
  *  at YYVSP[YYLOW0].yystate.yypred.  Leaves YYVSP[YYLOW1].yystate.yypred

- *  containing the pointer to the next state in the chain. Assumes
- *  YYLOW1 < YYLOW0.  */
-static void yyfillin (yyGLRStackItem *, int, int) ATTRIBUTE_UNUSED;
+ *  containing the pointer to the next state in the chain.  */
+static void yyfillin (yyGLRStackItem *, int, int) __attribute__ ((__unused__));

 static void
 yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1)
 {
 static void
 yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1)
 {


@@ -682,10 +868,10 @@ yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1)
 }
 
 /* Do nothing if YYNORMAL or if *YYLOW <= YYLOW1.  Otherwise, fill in
 }
 
 /* Do nothing if YYNORMAL or if *YYLOW <= YYLOW1.  Otherwise, fill in

-   YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1.
-   For convenience, always return YYLOW1.  */
+ * YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1.
+ * For convenience, always return YYLOW1.  */

 static inline int yyfill (yyGLRStackItem *, int *, int, yybool)
 static inline int yyfill (yyGLRStackItem *, int *, int, yybool)

-     ATTRIBUTE_UNUSED;
+     __attribute__ ((__unused__));

 static inline int
 yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal)
 {
 static inline int
 yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal)
 {


@@ -700,20 +886,21 @@ yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal)
 /** Perform user action for rule number YYN, with RHS length YYRHSLEN,
  *  and top stack item YYVSP.  YYLVALP points to place to put semantic
  *  value ($$), and yylocp points to place for location information
 /** Perform user action for rule number YYN, with RHS length YYRHSLEN,
  *  and top stack item YYVSP.  YYLVALP points to place to put semantic
  *  value ($$), and yylocp points to place for location information

- *  (@@$). Returns yyok for normal return, yyaccept for YYACCEPT,
- *  yyerr for YYERROR, yyabort for YYABORT. */
-static YYRESULTTAG
+ *  (@@$).  Returns yyok for normal return, yyaccept for YYACCEPT,
+ *  yyerr for YYERROR, yyabort for YYABORT.  */
+/*ARGSUSED*/ static YYRESULTTAG

 yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
              YYSTYPE* yyvalp,
 yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
              YYSTYPE* yyvalp,

-             YYLTYPE* yylocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[,
-             yyGLRStack* yystack
-              ]b4_user_formals[)
+             YYLTYPE* YYOPTIONAL_LOC (yylocp),
+             yyGLRStack* yystackp
+             ]b4_user_formals[)

 {
 {

-  yybool yynormal ATTRIBUTE_UNUSED = (yystack->yysplitPoint == NULL);
+  yybool yynormal __attribute__ ((__unused__)) =
+    (yystackp->yysplitPoint == NULL);

   int yylow;
   int yylow;

-
-# undef yyerrok
-# define yyerrok (yystack->yyerrState = 0)
+]b4_parse_param_use[]dnl
+[# undef yyerrok
+# define yyerrok (yystackp->yyerrState = 0)

 # undef YYACCEPT
 # define YYACCEPT return yyaccept
 # undef YYABORT
 # undef YYACCEPT
 # define YYACCEPT return yyaccept
 # undef YYABORT


@@ -721,14 +908,14 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 # undef YYERROR
 # define YYERROR return yyerrok, yyerr
 # undef YYRECOVERING
 # undef YYERROR
 # define YYERROR return yyerrok, yyerr
 # undef YYRECOVERING

-# define YYRECOVERING (yystack->yyerrState != 0)
+# define YYRECOVERING (yystackp->yyerrState != 0)

 # undef yyclearin
 # undef yyclearin

-# define yyclearin (yychar = *(yystack->yytokenp) = YYEMPTY)
+# define yyclearin (yychar = *(yystackp->yytokenp) = YYEMPTY)

 # undef YYFILL
 # define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal)
 # undef YYBACKUP
 # define YYBACKUP(Token, Value)                                                     \
 # undef YYFILL
 # define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal)
 # undef YYBACKUP
 # define YYBACKUP(Token, Value)                                                     \

-  return yyerror (]b4_yyerror_args["syntax error: cannot back up"),         \
+  return yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")),     \

         yyerrok, yyerr
 
   yylow = 1;
         yyerrok, yyerr
 
   yylow = 1;


@@ -737,10 +924,14 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
   else
     *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
   YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);
   else
     *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval;
   YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen);

-]
+]b4_location_if([[  yystackp->yyerror_range[1].yystate.yyloc = *yylocp;
+]])[

   switch (yyn)
     {
   switch (yyn)
     {

-      b4_actions
+      ]b4_actions
+/* Line __line__ of glr.c.  */
+b4_syncline([@oline@], [@ofile@])[
+      default: break;

     }
 
   return yyok;
     }
 
   return yyok;


@@ -751,36 +942,65 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp,
 # undef YYBACKUP
 # undef yyclearin
 # undef YYRECOVERING
 # undef YYBACKUP
 # undef yyclearin
 # undef YYRECOVERING

-/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])

 }
 \f
 
 }
 \f
 

-static void
+/*ARGSUSED*/ static void

 yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
 {
 yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1)
 {

-  /* `Use' the arguments.  */
-  (void) yy0;
-  (void) yy1;
+  YYUSE (yy0);
+  YYUSE (yy1);

 
   switch (yyn)
     {
 
   switch (yyn)
     {

-      b4_mergers
+      ]b4_mergers[
+      default: break;

     }
 }
     }
 }

-[
+

                              /* Bison grammar-table manipulation.  */
 
 ]b4_yydestruct_generate([b4_c_ansi_function_def])[
 
                              /* Bison grammar-table manipulation.  */
 
 ]b4_yydestruct_generate([b4_c_ansi_function_def])[
 

-/** Number of symbols composing the right hand side of rule #RULE. */
+/** Number of symbols composing the right hand side of rule #RULE.  */

 static inline int
 yyrhsLength (yyRuleNum yyrule)
 {
   return yyr2[yyrule];
 }
 
 static inline int
 yyrhsLength (yyRuleNum yyrule)
 {
   return yyr2[yyrule];
 }
 

-/** Left-hand-side symbol for rule #RULE. */
+static void
+yydestroyGLRState (char const *yymsg, yyGLRState *yys]b4_user_formals[)
+{
+  if (yys->yyresolved)
+    yydestruct (yymsg, yystos[yys->yylrState],
+               &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[]b4_user_args[);
+  else
+    {
+#if YYDEBUG
+      if (yydebug)
+       {
+         YYFPRINTF (stderr, "%s unresolved ", yymsg);
+         yy_symbol_print (stderr, yystos[yys->yylrState],
+                          NULL]b4_location_if([, &yys->yyloc])[]b4_user_args[);
+         YYFPRINTF (stderr, "\n");
+       }
+#endif
+
+      if (yys->yysemantics.yyfirstVal)
+       {
+         yySemanticOption *yyoption = yys->yysemantics.yyfirstVal;
+         yyGLRState *yyrh;
+         int yyn;
+         for (yyrh = yyoption->yystate, yyn = yyrhsLength (yyoption->yyrule);
+              yyn > 0;
+              yyrh = yyrh->yypred, yyn -= 1)
+           yydestroyGLRState (yymsg, yyrh]b4_user_args[);
+       }
+    }
+}
+
+/** Left-hand-side symbol for rule #RULE.  */

 static inline yySymbol
 yylhsNonterm (yyRuleNum yyrule)
 {
 static inline yySymbol
 yylhsNonterm (yyRuleNum yyrule)
 {


@@ -788,19 +1008,19 @@ yylhsNonterm (yyRuleNum yyrule)
 }
 
 #define yyis_pact_ninf(yystate) \
 }
 
 #define yyis_pact_ninf(yystate) \

-  ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), 1,
-        0,
-        ((yystate) == YYPACT_NINF))[
+  ]m4_if(m4_eval(b4_pact_ninf < b4_pact_min), [1],
+        [0],
+        [((yystate) == YYPACT_NINF)])[

 
 /** True iff LR state STATE has only a default reduction (regardless
 
 /** True iff LR state STATE has only a default reduction (regardless

- *  of token). */
+ *  of token).  */

 static inline yybool
 yyisDefaultedState (yyStateNum yystate)
 {
   return yyis_pact_ninf (yypact[yystate]);
 }
 
 static inline yybool
 yyisDefaultedState (yyStateNum yystate)
 {
   return yyis_pact_ninf (yypact[yystate]);
 }
 

-/** The default reduction for STATE, assuming it has one. */
+/** The default reduction for STATE, assuming it has one.  */

 static inline yyRuleNum
 yydefaultAction (yyStateNum yystate)
 {
 static inline yyRuleNum
 yydefaultAction (yyStateNum yystate)
 {


@@ -808,9 +1028,9 @@ yydefaultAction (yyStateNum yystate)
 }
 
 #define yyis_table_ninf(yytable_value) \
 }
 
 #define yyis_table_ninf(yytable_value) \

-  ]m4_if(m4_eval(b4_table_ninf < b4_table_min), 1,
-        0,
-        ((yytable_value) == YYTABLE_NINF))[
+  ]m4_if(m4_eval(b4_table_ninf < b4_table_min), [1],
+        [YYID (0)],
+        [((yytable_value) == YYTABLE_NINF)])[

 
 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means
 
 /** Set *YYACTION to the action to take in YYSTATE on seeing YYTOKEN.
  *  Result R means


@@ -822,7 +1042,7 @@ yydefaultAction (yyStateNum yystate)
  */
 static inline void
 yygetLRActions (yyStateNum yystate, int yytoken,
  */
 static inline void
 yygetLRActions (yyStateNum yystate, int yytoken,

-               int* yyaction, const short int** yyconflicts)
+               int* yyaction, const short int** yyconflicts)

 {
   int yyindex = yypact[yystate] + yytoken;
   if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)
 {
   int yyindex = yypact[yystate] + yytoken;
   if (yyindex < 0 || YYLAST < yyindex || yycheck[yyindex] != yytoken)


@@ -867,80 +1087,119 @@ yyisErrorAction (int yyaction)
 
                                /* GLRStates */
 
 
                                /* GLRStates */
 

+/** Return a fresh GLRStackItem.  Callers should call
+ * YY_RESERVE_GLRSTACK afterwards to make sure there is sufficient
+ * headroom.  */
+
+static inline yyGLRStackItem*
+yynewGLRStackItem (yyGLRStack* yystackp, yybool yyisState)
+{
+  yyGLRStackItem* yynewItem = yystackp->yynextFree;
+  yystackp->yyspaceLeft -= 1;
+  yystackp->yynextFree += 1;
+  yynewItem->yystate.yyisState = yyisState;
+  return yynewItem;
+}
+
+/** Add a new semantic action that will execute the action for rule
+ *  RULENUM on the semantic values in RHS to the list of
+ *  alternative actions for STATE.  Assumes that RHS comes from
+ *  stack #K of *STACKP. */

 static void
 static void

-yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate,
-                    yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[)
-{
-  yySemanticOption* yynewItem;
-  yynewItem = &yystack->yynextFree->yyoption;
-  yystack->yyspaceLeft -= 1;
-  yystack->yynextFree += 1;
-  yynewItem->yyisState = yyfalse;
-  yynewItem->yystate = rhs;
-  yynewItem->yyrule = yyrule;
-  yynewItem->yynext = yystate->yysemantics.yyfirstVal;
-  yystate->yysemantics.yyfirstVal = yynewItem;
-  if (yystack->yyspaceLeft < YYHEADROOM)
-    yyexpandGLRStack (yystack]b4_pure_args[);
+yyaddDeferredAction (yyGLRStack* yystackp, size_t yyk, yyGLRState* yystate,
+                    yyGLRState* rhs, yyRuleNum yyrule)
+{
+  yySemanticOption* yynewOption =
+    &yynewGLRStackItem (yystackp, yyfalse)->yyoption;
+  yynewOption->yystate = rhs;
+  yynewOption->yyrule = yyrule;
+  if (yystackp->yytops.yylookaheadNeeds[yyk])
+    {
+      yynewOption->yyrawchar = yychar;
+      yynewOption->yyval = yylval;
+      yynewOption->yyloc = yylloc;
+    }
+  else
+    yynewOption->yyrawchar = YYEMPTY;
+  yynewOption->yynext = yystate->yysemantics.yyfirstVal;
+  yystate->yysemantics.yyfirstVal = yynewOption;
+
+  YY_RESERVE_GLRSTACK (yystackp);

 }
 
                                /* GLRStacks */
 
 }
 
                                /* GLRStacks */
 

-/** Initialize SET to a singleton set containing an empty stack. */
-static void
+/** Initialize SET to a singleton set containing an empty stack.  */
+static yybool

 yyinitStateSet (yyGLRStateSet* yyset)
 {
   yyset->yysize = 1;
   yyset->yycapacity = 16;
   yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]);
 yyinitStateSet (yyGLRStateSet* yyset)
 {
   yyset->yysize = 1;
   yyset->yycapacity = 16;
   yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]);

+  if (! yyset->yystates)
+    return yyfalse;

   yyset->yystates[0] = NULL;
   yyset->yystates[0] = NULL;

+  yyset->yylookaheadNeeds =
+    (yybool*) YYMALLOC (16 * sizeof yyset->yylookaheadNeeds[0]);
+  if (! yyset->yylookaheadNeeds)
+    {
+      YYFREE (yyset->yystates);
+      return yyfalse;
+    }
+  return yytrue;

 }
 
 static void yyfreeStateSet (yyGLRStateSet* yyset)
 {
   YYFREE (yyset->yystates);
 }
 
 static void yyfreeStateSet (yyGLRStateSet* yyset)
 {
   YYFREE (yyset->yystates);

+  YYFREE (yyset->yylookaheadNeeds);

 }
 
 /** Initialize STACK to a single empty stack, with total maximum
 }
 
 /** Initialize STACK to a single empty stack, with total maximum

- *  capacity for all stacks of SIZE. */
-static void
-yyinitGLRStack (yyGLRStack* yystack, size_t yysize)
+ *  capacity for all stacks of SIZE.  */
+static yybool
+yyinitGLRStack (yyGLRStack* yystackp, size_t yysize)

 {
 {

-  yystack->yyerrflag = 0;
-  yystack->yyerrState = 0;
+  yystackp->yyerrState = 0;

   yynerrs = 0;
   yynerrs = 0;

-  yystack->yyspaceLeft = yysize;
-  yystack->yynextFree = yystack->yyitems =
-    (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]);
-  yystack->yysplitPoint = NULL;
-  yystack->yylastDeleted = NULL;
-  yyinitStateSet (&yystack->yytops);
+  yystackp->yyspaceLeft = yysize;
+  yystackp->yyitems =
+    (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystackp->yynextFree[0]);
+  if (!yystackp->yyitems)
+    return yyfalse;
+  yystackp->yynextFree = yystackp->yyitems;
+  yystackp->yysplitPoint = NULL;
+  yystackp->yylastDeleted = NULL;
+  return yyinitStateSet (&yystackp->yytops);

 }
 
 }
 

-#define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \
+
+#if YYSTACKEXPANDABLE
+# define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \

   &((YYTOITEMS) - ((YYFROMITEMS) - (yyGLRStackItem*) (YYX)))->YYTYPE
 
 /** If STACK is expandable, extend it.  WARNING: Pointers into the
     stack from outside should be considered invalid after this call.
     We always expand when there are 1 or fewer items left AFTER an
     allocation, so that we can avoid having external pointers exist
   &((YYTOITEMS) - ((YYFROMITEMS) - (yyGLRStackItem*) (YYX)))->YYTYPE
 
 /** If STACK is expandable, extend it.  WARNING: Pointers into the
     stack from outside should be considered invalid after this call.
     We always expand when there are 1 or fewer items left AFTER an
     allocation, so that we can avoid having external pointers exist

-    across an allocation. */
+    across an allocation.  */

 static void
 static void

-yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[)
+yyexpandGLRStack (yyGLRStack* yystackp)

 {
 {

-#if YYSTACKEXPANDABLE
-  yyGLRStack yynewStack;
+  yyGLRStackItem* yynewItems;

   yyGLRStackItem* yyp0, *yyp1;
   size_t yysize, yynewSize;
   size_t yyn;
   yyGLRStackItem* yyp0, *yyp1;
   size_t yysize, yynewSize;
   size_t yyn;

-  yysize = yystack->yynextFree - yystack->yyitems;
+  yysize = yystackp->yynextFree - yystackp->yyitems;

   if (YYMAXDEPTH <= yysize)
   if (YYMAXDEPTH <= yysize)

-    yyFail (yystack][]b4_pure_args[, "parser stack overflow");
+    yyMemoryExhausted (yystackp);

   yynewSize = 2*yysize;
   if (YYMAXDEPTH < yynewSize)
     yynewSize = YYMAXDEPTH;
   yynewSize = 2*yysize;
   if (YYMAXDEPTH < yynewSize)
     yynewSize = YYMAXDEPTH;

-  yyinitGLRStack (&yynewStack, yynewSize);
-  for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize;
+  yynewItems = (yyGLRStackItem*) YYMALLOC (yynewSize * sizeof yynewItems[0]);
+  if (! yynewItems)
+    yyMemoryExhausted (yystackp);
+  for (yyp0 = yystackp->yyitems, yyp1 = yynewItems, yyn = yysize;

        0 < yyn;
        yyn -= 1, yyp0 += 1, yyp1 += 1)
     {
        0 < yyn;
        yyn -= 1, yyp0 += 1, yyp1 += 1)
     {


@@ -966,84 +1225,87 @@ yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[)
            yyv1->yynext = YYRELOC (yyp0, yyp1, yyv0->yynext, yyoption);
        }
     }
            yyv1->yynext = YYRELOC (yyp0, yyp1, yyv0->yynext, yyoption);
        }
     }

-  if (yystack->yysplitPoint != NULL)
-    yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewStack.yyitems,
-                                yystack->yysplitPoint, yystate);
-
-  for (yyn = 0; yyn < yystack->yytops.yysize; yyn += 1)
-    if (yystack->yytops.yystates[yyn] != NULL)
-      yystack->yytops.yystates[yyn] =
-       YYRELOC (yystack->yyitems, yynewStack.yyitems,
-                yystack->yytops.yystates[yyn], yystate);
-  YYFREE (yystack->yyitems);
-  yystack->yyitems = yynewStack.yyitems;
-  yystack->yynextFree = yynewStack.yynextFree + yysize;
-  yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize;
-
-#else
-
-  yyFail (yystack][]b4_pure_args[, "parser stack overflow");
-#endif
+  if (yystackp->yysplitPoint != NULL)
+    yystackp->yysplitPoint = YYRELOC (yystackp->yyitems, yynewItems,
+                                yystackp->yysplitPoint, yystate);
+
+  for (yyn = 0; yyn < yystackp->yytops.yysize; yyn += 1)
+    if (yystackp->yytops.yystates[yyn] != NULL)
+      yystackp->yytops.yystates[yyn] =
+       YYRELOC (yystackp->yyitems, yynewItems,
+                yystackp->yytops.yystates[yyn], yystate);
+  YYFREE (yystackp->yyitems);
+  yystackp->yyitems = yynewItems;
+  yystackp->yynextFree = yynewItems + yysize;
+  yystackp->yyspaceLeft = yynewSize - yysize;

 }
 }

+#endif

 
 static void
 
 static void

-yyfreeGLRStack (yyGLRStack* yystack)
+yyfreeGLRStack (yyGLRStack* yystackp)

 {
 {

-  YYFREE (yystack->yyitems);
-  yyfreeStateSet (&yystack->yytops);
+  YYFREE (yystackp->yyitems);
+  yyfreeStateSet (&yystackp->yytops);

 }
 
 /** Assuming that S is a GLRState somewhere on STACK, update the
  *  splitpoint of STACK, if needed, so that it is at least as deep as
 }
 
 /** Assuming that S is a GLRState somewhere on STACK, update the
  *  splitpoint of STACK, if needed, so that it is at least as deep as

- *  S. */
+ *  S.  */

 static inline void
 static inline void

-yyupdateSplit (yyGLRStack* yystack, yyGLRState* yys)
+yyupdateSplit (yyGLRStack* yystackp, yyGLRState* yys)

 {
 {

-  if (yystack->yysplitPoint != NULL && yystack->yysplitPoint > yys)
-    yystack->yysplitPoint = yys;
+  if (yystackp->yysplitPoint != NULL && yystackp->yysplitPoint > yys)
+    yystackp->yysplitPoint = yys;

 }
 
 }
 

-/** Invalidate stack #K in STACK. */
+/** Invalidate stack #K in STACK.  */

 static inline void
 static inline void

-yymarkStackDeleted (yyGLRStack* yystack, int yyk)
+yymarkStackDeleted (yyGLRStack* yystackp, size_t yyk)

 {
 {

-  if (yystack->yytops.yystates[yyk] != NULL)
-    yystack->yylastDeleted = yystack->yytops.yystates[yyk];
-  yystack->yytops.yystates[yyk] = NULL;
+  if (yystackp->yytops.yystates[yyk] != NULL)
+    yystackp->yylastDeleted = yystackp->yytops.yystates[yyk];
+  yystackp->yytops.yystates[yyk] = NULL;

 }
 
 /** Undelete the last stack that was marked as deleted.  Can only be
     done once after a deletion, and only when all other stacks have
 }
 
 /** Undelete the last stack that was marked as deleted.  Can only be
     done once after a deletion, and only when all other stacks have

-    been deleted. */
+    been deleted.  */

 static void
 static void

-yyundeleteLastStack (yyGLRStack* yystack)
+yyundeleteLastStack (yyGLRStack* yystackp)

 {
 {

-  if (yystack->yylastDeleted == NULL || yystack->yytops.yysize != 0)
+  if (yystackp->yylastDeleted == NULL || yystackp->yytops.yysize != 0)

     return;
     return;

-  yystack->yytops.yystates[0] = yystack->yylastDeleted;
-  yystack->yytops.yysize = 1;
+  yystackp->yytops.yystates[0] = yystackp->yylastDeleted;
+  yystackp->yytops.yysize = 1;

   YYDPRINTF ((stderr, "Restoring last deleted stack as stack #0.\n"));
   YYDPRINTF ((stderr, "Restoring last deleted stack as stack #0.\n"));

-  yystack->yylastDeleted = NULL;
+  yystackp->yylastDeleted = NULL;

 }
 
 static inline void
 }
 
 static inline void

-yyremoveDeletes (yyGLRStack* yystack)
+yyremoveDeletes (yyGLRStack* yystackp)

 {
   size_t yyi, yyj;
   yyi = yyj = 0;
 {
   size_t yyi, yyj;
   yyi = yyj = 0;

-  while (yyj < yystack->yytops.yysize)
+  while (yyj < yystackp->yytops.yysize)

     {
     {

-      if (yystack->yytops.yystates[yyi] == NULL)
+      if (yystackp->yytops.yystates[yyi] == NULL)

        {
          if (yyi == yyj)
            {
              YYDPRINTF ((stderr, "Removing dead stacks.\n"));
            }
        {
          if (yyi == yyj)
            {
              YYDPRINTF ((stderr, "Removing dead stacks.\n"));
            }

-         yystack->yytops.yysize -= 1;
+         yystackp->yytops.yysize -= 1;

        }
       else
        {
        }
       else
        {

-         yystack->yytops.yystates[yyj] = yystack->yytops.yystates[yyi];
+         yystackp->yytops.yystates[yyj] = yystackp->yytops.yystates[yyi];
+         /* In the current implementation, it's unnecessary to copy
+            yystackp->yytops.yylookaheadNeeds[yyi] since, after
+            yyremoveDeletes returns, the parser immediately either enters
+            deterministic operation or shifts a token.  However, it doesn't
+            hurt, and the code might evolve to need it.  */
+         yystackp->yytops.yylookaheadNeeds[yyj] =
+           yystackp->yytops.yylookaheadNeeds[yyi];

          if (yyj != yyi)
            {
              YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n",
          if (yyj != yyi)
            {
              YYDPRINTF ((stderr, "Rename stack %lu -> %lu.\n",


@@ -1056,116 +1318,133 @@ yyremoveDeletes (yyGLRStack* yystack)
 }
 
 /** Shift to a new state on stack #K of STACK, corresponding to LR state
 }
 
 /** Shift to a new state on stack #K of STACK, corresponding to LR state

- * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */
+ * LRSTATE, at input position POSN, with (resolved) semantic value SVAL.  */

 static inline void
 static inline void

-yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn,
-           YYSTYPE yysval, YYLTYPE* yylocp]b4_user_formals[)
-{
-  yyGLRStackItem* yynewItem;
-
-  yynewItem = yystack->yynextFree;
-  yystack->yynextFree += 1;
-  yystack->yyspaceLeft -= 1;
-  yynewItem->yystate.yyisState = yytrue;
-  yynewItem->yystate.yylrState = yylrState;
-  yynewItem->yystate.yyposn = yyposn;
-  yynewItem->yystate.yyresolved = yytrue;
-  yynewItem->yystate.yypred = yystack->yytops.yystates[yyk];
-  yystack->yytops.yystates[yyk] = &yynewItem->yystate;
-  yynewItem->yystate.yysemantics.yysval = yysval;
-  yynewItem->yystate.yyloc = *yylocp;
-  if (yystack->yyspaceLeft < YYHEADROOM)
-    yyexpandGLRStack (yystack]b4_pure_args[);
+yyglrShift (yyGLRStack* yystackp, size_t yyk, yyStateNum yylrState,
+           size_t yyposn,
+           YYSTYPE* yyvalp, YYLTYPE* yylocp)
+{
+  yyGLRState* yynewState = &yynewGLRStackItem (yystackp, yytrue)->yystate;
+
+  yynewState->yylrState = yylrState;
+  yynewState->yyposn = yyposn;
+  yynewState->yyresolved = yytrue;
+  yynewState->yypred = yystackp->yytops.yystates[yyk];
+  yynewState->yysemantics.yysval = *yyvalp;
+  yynewState->yyloc = *yylocp;
+  yystackp->yytops.yystates[yyk] = yynewState;
+
+  YY_RESERVE_GLRSTACK (yystackp);

 }
 
 /** Shift stack #K of YYSTACK, to a new state corresponding to LR
  *  state YYLRSTATE, at input position YYPOSN, with the (unresolved)
 }
 
 /** Shift stack #K of YYSTACK, to a new state corresponding to LR
  *  state YYLRSTATE, at input position YYPOSN, with the (unresolved)

- *  semantic value of YYRHS under the action for YYRULE. */
+ *  semantic value of YYRHS under the action for YYRULE.  */

 static inline void
 static inline void

-yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState,
-                size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[)
-{
-  yyGLRStackItem* yynewItem;
-
-  yynewItem = yystack->yynextFree;
-  yynewItem->yystate.yyisState = yytrue;
-  yynewItem->yystate.yylrState = yylrState;
-  yynewItem->yystate.yyposn = yyposn;
-  yynewItem->yystate.yyresolved = yyfalse;
-  yynewItem->yystate.yypred = yystack->yytops.yystates[yyk];
-  yynewItem->yystate.yysemantics.yyfirstVal = NULL;
-  yystack->yytops.yystates[yyk] = &yynewItem->yystate;
-  yystack->yynextFree += 1;
-  yystack->yyspaceLeft -= 1;
-  yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule]b4_pure_args[);
+yyglrShiftDefer (yyGLRStack* yystackp, size_t yyk, yyStateNum yylrState,
+                size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule)
+{
+  yyGLRState* yynewState = &yynewGLRStackItem (yystackp, yytrue)->yystate;
+
+  yynewState->yylrState = yylrState;
+  yynewState->yyposn = yyposn;
+  yynewState->yyresolved = yyfalse;
+  yynewState->yypred = yystackp->yytops.yystates[yyk];
+  yynewState->yysemantics.yyfirstVal = NULL;
+  yystackp->yytops.yystates[yyk] = yynewState;
+
+  /* Invokes YY_RESERVE_GLRSTACK.  */
+  yyaddDeferredAction (yystackp, yyk, yynewState, rhs, yyrule);

 }
 
 /** Pop the symbols consumed by reduction #RULE from the top of stack
  *  #K of STACK, and perform the appropriate semantic action on their
  *  semantic values.  Assumes that all ambiguities in semantic values
 }
 
 /** Pop the symbols consumed by reduction #RULE from the top of stack
  *  #K of STACK, and perform the appropriate semantic action on their
  *  semantic values.  Assumes that all ambiguities in semantic values

- *  have been previously resolved. Set *VALP to the resulting value,
+ *  have been previously resolved.  Set *VALP to the resulting value,

  *  and *LOCP to the computed location (if any).  Return value is as
  *  and *LOCP to the computed location (if any).  Return value is as

- *  for userAction. */
+ *  for userAction.  */

 static inline YYRESULTTAG
 static inline YYRESULTTAG

-yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule,
+yydoAction (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,

            YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
 {
   int yynrhs = yyrhsLength (yyrule);
 
            YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
 {
   int yynrhs = yyrhsLength (yyrule);
 

-  if (yystack->yysplitPoint == NULL)
+  if (yystackp->yysplitPoint == NULL)

     {
     {

-      /* Standard special case: single stack. */
-      yyGLRStackItem* rhs = (yyGLRStackItem*) yystack->yytops.yystates[yyk];
+      /* Standard special case: single stack.  */
+      yyGLRStackItem* rhs = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];

       YYASSERT (yyk == 0);
       YYASSERT (yyk == 0);

-      yystack->yynextFree -= yynrhs;
-      yystack->yyspaceLeft += yynrhs;
-      yystack->yytops.yystates[0] = & yystack->yynextFree[-1].yystate;
+      yystackp->yynextFree -= yynrhs;
+      yystackp->yyspaceLeft += yynrhs;
+      yystackp->yytops.yystates[0] = & yystackp->yynextFree[-1].yystate;

       return yyuserAction (yyrule, yynrhs, rhs,
       return yyuserAction (yyrule, yynrhs, rhs,

-                          yyvalp, yylocp, yystack]b4_user_args[);
+                          yyvalp, yylocp, yystackp]b4_user_args[);

     }
   else
     {
     }
   else
     {

+      /* At present, doAction is never called in nondeterministic
+       * mode, so this branch is never taken.  It is here in
+       * anticipation of a future feature that will allow immediate
+       * evaluation of selected actions in nondeterministic mode.  */

       int yyi;
       yyGLRState* yys;
       yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
       yys = yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred
       int yyi;
       yyGLRState* yys;
       yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
       yys = yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred

-       = yystack->yytops.yystates[yyk];
+       = yystackp->yytops.yystates[yyk];]b4_location_if([[
+      if (yynrhs == 0)
+       /* Set default location.  */
+       yyrhsVals[YYMAXRHS + YYMAXLEFT - 1].yystate.yyloc = yys->yyloc;]])[

       for (yyi = 0; yyi < yynrhs; yyi += 1)
        {
          yys = yys->yypred;
          YYASSERT (yys);
        }
       for (yyi = 0; yyi < yynrhs; yyi += 1)
        {
          yys = yys->yypred;
          YYASSERT (yys);
        }

-      yyupdateSplit (yystack, yys);
-      yystack->yytops.yystates[yyk] = yys;
+      yyupdateSplit (yystackp, yys);
+      yystackp->yytops.yystates[yyk] = yys;

       return yyuserAction (yyrule, yynrhs, yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
       return yyuserAction (yyrule, yynrhs, yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,

-                          yyvalp, yylocp, yystack]b4_user_args[);
+                          yyvalp, yylocp, yystackp]b4_user_args[);

     }
 }
 
 #if !YYDEBUG
     }
 }
 
 #if !YYDEBUG

-# define YY_REDUCE_PRINT(K, Rule)
+# define YY_REDUCE_PRINT(Args)

 #else
 #else

-# define YY_REDUCE_PRINT(K, Rule)      \
+# define YY_REDUCE_PRINT(Args)         \

 do {                                   \
   if (yydebug)                         \
 do {                                   \
   if (yydebug)                         \

-    yy_reduce_print (K, Rule);         \
-} while (0)
+    yy_reduce_print Args;              \
+} while (YYID (0))

 
 /*----------------------------------------------------------.
 | Report that the RULE is going to be reduced on stack #K.  |
 `----------------------------------------------------------*/
 
 
 /*----------------------------------------------------------.
 | Report that the RULE is going to be reduced on stack #K.  |
 `----------------------------------------------------------*/
 

-static inline void
-yy_reduce_print (size_t yyk, yyRuleNum yyrule)
+/*ARGSUSED*/ static inline void
+yy_reduce_print (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
+                YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)

 {
 {

+  int yynrhs = yyrhsLength (yyrule);
+  yybool yynormal __attribute__ ((__unused__)) =
+    (yystackp->yysplitPoint == NULL);
+  yyGLRStackItem* yyvsp = (yyGLRStackItem*) yystackp->yytops.yystates[yyk];
+  int yylow = 1;

   int yyi;
   int yyi;

-  YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu), ",
+  YYUSE (yyvalp);
+  YYUSE (yylocp);
+]b4_parse_param_use[]dnl
+[  YYFPRINTF (stderr, "Reducing stack %lu by rule %d (line %lu):\n",

             (unsigned long int) yyk, yyrule - 1,
             (unsigned long int) yyrline[yyrule]);
             (unsigned long int) yyk, yyrule - 1,
             (unsigned long int) yyrline[yyrule]);

-  /* Print the symbols being reduced, and their result.  */
-  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
-    YYFPRINTF (stderr, "%s ", yytokenName (yyrhs[yyi]));
-  YYFPRINTF (stderr, "-> %s\n", yytokenName (yyr1[yyrule]));
+  /* The symbols being reduced.  */
+  for (yyi = 0; yyi < yynrhs; yyi++)
+    {
+      fprintf (stderr, "   $%d = ", yyi + 1);
+      yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi],
+                      &]b4_rhs_value(yynrhs, yyi + 1)[
+                      ]b4_location_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
+                      b4_user_args[);
+      fprintf (stderr, "\n");
+    }

 }
 #endif
 
 }
 #endif
 


@@ -1177,56 +1456,58 @@ yy_reduce_print (size_t yyk, yyRuleNum yyrule)
  *  the new state.  If the new state would have an identical input
  *  position, LR state, and predecessor to an existing state on the stack,
  *  it is identified with that existing state, eliminating stack #K from
  *  the new state.  If the new state would have an identical input
  *  position, LR state, and predecessor to an existing state on the stack,
  *  it is identified with that existing state, eliminating stack #K from

- *  the STACK. In this case, the (necessarily deferred) semantic value is
+ *  the STACK.  In this case, the (necessarily deferred) semantic value is

  *  added to the options for the existing state's semantic value.
  */
 static inline YYRESULTTAG
  *  added to the options for the existing state's semantic value.
  */
 static inline YYRESULTTAG

-yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
-             yybool yyforceEval]b4_pure_formals[)
+yyglrReduce (yyGLRStack* yystackp, size_t yyk, yyRuleNum yyrule,
+            yybool yyforceEval]b4_user_formals[)

 {
 {

-  size_t yyposn = yystack->yytops.yystates[yyk]->yyposn;
+  size_t yyposn = yystackp->yytops.yystates[yyk]->yyposn;

 
 

-  if (yyforceEval || yystack->yysplitPoint == NULL)
+  if (yyforceEval || yystackp->yysplitPoint == NULL)

     {
       YYSTYPE yysval;
       YYLTYPE yyloc;
 
     {
       YYSTYPE yysval;
       YYLTYPE yyloc;
 

-      YY_REDUCE_PRINT (yyk, yyrule);
-      YYCHK (yydoAction (yystack, yyk, yyrule, &yysval, &yyloc]b4_user_args[));
-      yyglrShift (yystack, yyk,
-                 yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState,
+      YY_REDUCE_PRINT ((yystackp, yyk, yyrule, &yysval, &yyloc]b4_user_args[));
+      YYCHK (yydoAction (yystackp, yyk, yyrule, &yysval,
+                        &yyloc]b4_user_args[));
+      YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyrule], &yysval, &yyloc);
+      yyglrShift (yystackp, yyk,
+                 yyLRgotoState (yystackp->yytops.yystates[yyk]->yylrState,

                                 yylhsNonterm (yyrule)),
                                 yylhsNonterm (yyrule)),

-                 yyposn, yysval, &yyloc]b4_user_args[);
+                 yyposn, &yysval, &yyloc);

     }
   else
     {
       size_t yyi;
       int yyn;
     }
   else
     {
       size_t yyi;
       int yyn;

-      yyGLRState* yys, *yys0 = yystack->yytops.yystates[yyk];
+      yyGLRState* yys, *yys0 = yystackp->yytops.yystates[yyk];

       yyStateNum yynewLRState;
 
       yyStateNum yynewLRState;
 

-      for (yys = yystack->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);
+      for (yys = yystackp->yytops.yystates[yyk], yyn = yyrhsLength (yyrule);

           0 < yyn; yyn -= 1)
        {
          yys = yys->yypred;
          YYASSERT (yys);
        }
           0 < yyn; yyn -= 1)
        {
          yys = yys->yypred;
          YYASSERT (yys);
        }

-      yyupdateSplit (yystack, yys);
+      yyupdateSplit (yystackp, yys);

       yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule));
       YYDPRINTF ((stderr,
       yynewLRState = yyLRgotoState (yys->yylrState, yylhsNonterm (yyrule));
       YYDPRINTF ((stderr,

-                 "Reduced stack %lu by rule #%d; action deferred. Now in state %d.\n",
+                 "Reduced stack %lu by rule #%d; action deferred.  Now in state %d.\n",

                  (unsigned long int) yyk, yyrule - 1, yynewLRState));
                  (unsigned long int) yyk, yyrule - 1, yynewLRState));

-      for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
-       if (yyi != yyk && yystack->yytops.yystates[yyi] != NULL)
+      for (yyi = 0; yyi < yystackp->yytops.yysize; yyi += 1)
+       if (yyi != yyk && yystackp->yytops.yystates[yyi] != NULL)

          {
          {

-           yyGLRState* yyp, *yysplit = yystack->yysplitPoint;
-           yyp = yystack->yytops.yystates[yyi];
+           yyGLRState* yyp, *yysplit = yystackp->yysplitPoint;
+           yyp = yystackp->yytops.yystates[yyi];

            while (yyp != yys && yyp != yysplit && yyp->yyposn >= yyposn)
              {
                if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
                  {
            while (yyp != yys && yyp != yysplit && yyp->yyposn >= yyposn)
              {
                if (yyp->yylrState == yynewLRState && yyp->yypred == yys)
                  {

-                   yyaddDeferredAction (yystack, yyp, yys0, yyrule]b4_pure_args[);
-                   yymarkStackDeleted (yystack, yyk);
+                   yyaddDeferredAction (yystackp, yyk, yyp, yys0, yyrule);
+                   yymarkStackDeleted (yystackp, yyk);

                    YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n",
                                (unsigned long int) yyk,
                                (unsigned long int) yyi));
                    YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n",
                                (unsigned long int) yyk,
                                (unsigned long int) yyi));


@@ -1235,37 +1516,59 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule,
                yyp = yyp->yypred;
              }
          }
                yyp = yyp->yypred;
              }
          }

-      yystack->yytops.yystates[yyk] = yys;
-      yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule]b4_pure_args[);
+      yystackp->yytops.yystates[yyk] = yys;
+      yyglrShiftDefer (yystackp, yyk, yynewLRState, yyposn, yys0, yyrule);

     }
   return yyok;
 }
 
     }
   return yyok;
 }
 

-static int
-yysplitStack (yyGLRStack* yystack, int yyk)
+static size_t
+yysplitStack (yyGLRStack* yystackp, size_t yyk)

 {
 {

-  if (yystack->yysplitPoint == NULL)
+  if (yystackp->yysplitPoint == NULL)

     {
       YYASSERT (yyk == 0);
     {
       YYASSERT (yyk == 0);

-      yystack->yysplitPoint = yystack->yytops.yystates[yyk];
+      yystackp->yysplitPoint = yystackp->yytops.yystates[yyk];

     }
     }

-  if (yystack->yytops.yysize >= yystack->yytops.yycapacity)
+  if (yystackp->yytops.yysize >= yystackp->yytops.yycapacity)

     {
     {

-      yystack->yytops.yycapacity *= 2;
-      yystack->yytops.yystates =
-       (yyGLRState**) YYREALLOC (yystack->yytops.yystates,
-                                 (yystack->yytops.yycapacity
-                                  * sizeof yystack->yytops.yystates[0]));
+      yyGLRState** yynewStates;
+      yybool* yynewLookaheadNeeds;
+
+      yynewStates = NULL;
+
+      if (yystackp->yytops.yycapacity
+         > (YYSIZEMAX / (2 * sizeof yynewStates[0])))
+       yyMemoryExhausted (yystackp);
+      yystackp->yytops.yycapacity *= 2;
+
+      yynewStates =
+       (yyGLRState**) YYREALLOC (yystackp->yytops.yystates,
+                                 (yystackp->yytops.yycapacity
+                                  * sizeof yynewStates[0]));
+      if (yynewStates == NULL)
+       yyMemoryExhausted (yystackp);
+      yystackp->yytops.yystates = yynewStates;
+
+      yynewLookaheadNeeds =
+       (yybool*) YYREALLOC (yystackp->yytops.yylookaheadNeeds,
+                            (yystackp->yytops.yycapacity
+                             * sizeof yynewLookaheadNeeds[0]));
+      if (yynewLookaheadNeeds == NULL)
+       yyMemoryExhausted (yystackp);
+      yystackp->yytops.yylookaheadNeeds = yynewLookaheadNeeds;

     }
     }

-  yystack->yytops.yystates[yystack->yytops.yysize]
-    = yystack->yytops.yystates[yyk];
-  yystack->yytops.yysize += 1;
-  return yystack->yytops.yysize-1;
+  yystackp->yytops.yystates[yystackp->yytops.yysize]
+    = yystackp->yytops.yystates[yyk];
+  yystackp->yytops.yylookaheadNeeds[yystackp->yytops.yysize]
+    = yystackp->yytops.yylookaheadNeeds[yyk];
+  yystackp->yytops.yysize += 1;
+  return yystackp->yytops.yysize-1;

 }
 
 /** True iff Y0 and Y1 represent identical options at the top level.
  *  That is, they represent the same rule applied to RHS symbols
 }
 
 /** True iff Y0 and Y1 represent identical options at the top level.
  *  That is, they represent the same rule applied to RHS symbols

- *  that produce the same terminal symbols. */
+ *  that produce the same terminal symbols.  */

 static yybool
 yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {
 static yybool
 yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {


@@ -1285,9 +1588,8 @@ yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1)
     return yyfalse;
 }
 
     return yyfalse;
 }
 

-/** Assuming identicalOptions (Y0,Y1), (destructively) merge the
- *  alternative semantic values for the RHS-symbols of Y1 into the
- *  corresponding semantic value sets of the symbols of Y0. */
+/** Assuming identicalOptions (Y0,Y1), destructively merge the
+ *  alternative semantic values for the RHS-symbols of Y1 and Y0.  */

 static void
 yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {
 static void
 yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
 {


@@ -1297,21 +1599,51 @@ yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1)
        yyn = yyrhsLength (yyy0->yyrule);
        yyn > 0;
        yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)
        yyn = yyrhsLength (yyy0->yyrule);
        yyn > 0;
        yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1)

-    if (yys0 == yys1)
-      break;
-    else if (! yys0->yyresolved && ! yys1->yyresolved)
-      {
-       yySemanticOption* yyz;
-       for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL;
-            yyz = yyz->yynext)
-         continue;
-       yyz->yynext = yys1->yysemantics.yyfirstVal;
-      }
+    {
+      if (yys0 == yys1)
+       break;
+      else if (yys0->yyresolved)
+       {
+         yys1->yyresolved = yytrue;
+         yys1->yysemantics.yysval = yys0->yysemantics.yysval;
+       }
+      else if (yys1->yyresolved)
+       {
+         yys0->yyresolved = yytrue;
+         yys0->yysemantics.yysval = yys1->yysemantics.yysval;
+       }
+      else
+       {
+         yySemanticOption** yyz0p;
+         yySemanticOption* yyz1;
+         yyz0p = &yys0->yysemantics.yyfirstVal;
+         yyz1 = yys1->yysemantics.yyfirstVal;
+         while (YYID (yytrue))
+           {
+             if (yyz1 == *yyz0p || yyz1 == NULL)
+               break;
+             else if (*yyz0p == NULL)
+               {
+                 *yyz0p = yyz1;
+                 break;
+               }
+             else if (*yyz0p < yyz1)
+               {
+                 yySemanticOption* yyz = *yyz0p;
+                 *yyz0p = yyz1;
+                 yyz1 = yyz1->yynext;
+                 (*yyz0p)->yynext = yyz;
+               }
+             yyz0p = &(*yyz0p)->yynext;
+           }
+         yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal;
+       }
+    }

 }
 
 /** Y0 and Y1 represent two possible actions to take in a given
  *  parsing state; return 0 if no combination is possible,
 }
 
 /** Y0 and Y1 represent two possible actions to take in a given
  *  parsing state; return 0 if no combination is possible,

- *  1 if user-mergeable, 2 if Y0 is preferred, 3 if Y1 is preferred. */
+ *  1 if user-mergeable, 2 if Y0 is preferred, 3 if Y1 is preferred.  */

 static int
 yypreference (yySemanticOption* y0, yySemanticOption* y1)
 {
 static int
 yypreference (yySemanticOption* y0, yySemanticOption* y1)
 {


@@ -1334,27 +1666,29 @@ yypreference (yySemanticOption* y0, yySemanticOption* y1)
   return 0;
 }
 
   return 0;
 }
 

-static YYRESULTTAG yyresolveValue (yySemanticOption* yyoptionList,
-                                  yyGLRStack* yystack, YYSTYPE* yyvalp,
+static YYRESULTTAG yyresolveValue (yyGLRState* yys,
+                                  yyGLRStack* yystackp, YYSTYPE* yyvalp,

                                   YYLTYPE* yylocp]b4_user_formals[);
 
 static YYRESULTTAG
                                   YYLTYPE* yylocp]b4_user_formals[);
 
 static YYRESULTTAG

-yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack]b4_user_formals[)
+yyresolveStates (yyGLRState* yys, int yyn,
+                yyGLRStack* yystackp]b4_user_formals[)

 {
 {

-  YYRESULTTAG yyflag;

   if (0 < yyn)
     {
       YYASSERT (yys->yypred);
   if (0 < yyn)
     {
       YYASSERT (yys->yypred);

-      yyflag = yyresolveStates (yys->yypred, yyn-1, yystack]b4_user_args[);
-      if (yyflag != yyok)
-       return yyflag;
+      YYCHK (yyresolveStates (yys->yypred, yyn-1, yystackp]b4_user_args[));

       if (! yys->yyresolved)
        {
       if (! yys->yyresolved)
        {

-         yyflag = yyresolveValue (yys->yysemantics.yyfirstVal, yystack,
-                                  &yys->yysemantics.yysval, &yys->yyloc
-                                 ]b4_user_args[);
+         YYSTYPE yysval;
+         YYRESULTTAG yyflag = yyresolveValue (yys, yystackp, &yysval,
+                                              &yys->yyloc]b4_user_args[);

          if (yyflag != yyok)
          if (yyflag != yyok)

-           return yyflag;
+           {
+             yys->yysemantics.yyfirstVal = NULL;
+             return yyflag;
+           }
+         yys->yysemantics.yysval = yysval;

          yys->yyresolved = yytrue;
        }
     }
          yys->yyresolved = yytrue;
        }
     }


@@ -1362,18 +1696,35 @@ yyresolveStates (yyGLRState* yys, int yyn, yyGLRStack* yystack]b4_user_formals[)
 }
 
 static YYRESULTTAG
 }
 
 static YYRESULTTAG

-yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystack,
-                YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yyresolveAction (yySemanticOption* yyopt, yyGLRStack* yystackp,
+                YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)

 {
   yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
   int yynrhs;
 {
   yyGLRStackItem yyrhsVals[YYMAXRHS + YYMAXLEFT + 1];
   int yynrhs;

+  int yychar_current;
+  YYSTYPE yylval_current;
+  YYLTYPE yylloc_current;
+  YYRESULTTAG yyresult;

 
   yynrhs = yyrhsLength (yyopt->yyrule);
 
   yynrhs = yyrhsLength (yyopt->yyrule);

-  YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystack]b4_user_args[));
-  yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate;
-  return yyuserAction (yyopt->yyrule, yynrhs,
-                      yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
-                      yyvalp, yylocp, yystack]b4_user_args[);
+  YYCHK (yyresolveStates (yyopt->yystate, yynrhs, yystackp]b4_user_args[));
+  yyrhsVals[YYMAXRHS + YYMAXLEFT].yystate.yypred = yyopt->yystate;]b4_location_if([[
+  if (yynrhs == 0)
+    /* Set default location.  */
+    yyrhsVals[YYMAXRHS + YYMAXLEFT - 1].yystate.yyloc = yyopt->yystate->yyloc;]])[
+  yychar_current = yychar;
+  yylval_current = yylval;
+  yylloc_current = yylloc;
+  yychar = yyopt->yyrawchar;
+  yylval = yyopt->yyval;
+  yylloc = yyopt->yyloc;
+  yyresult = yyuserAction (yyopt->yyrule, yynrhs,
+                          yyrhsVals + YYMAXRHS + YYMAXLEFT - 1,
+                          yyvalp, yylocp, yystackp]b4_user_args[);
+  yychar = yychar_current;
+  yylval = yylval_current;
+  yylloc = yylloc_current;
+  return yyresult;

 }
 
 #if YYDEBUG
 }
 
 #if YYDEBUG


@@ -1424,13 +1775,15 @@ yyreportTree (yySemanticOption* yyx, int yyindent)
 }
 #endif
 
 }
 #endif
 

-static void
+static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
+                              yyGLRStack* yystackp]b4_pure_formals[)
+  __attribute__ ((__noreturn__));
+/*ARGSUSED*/ static void

 yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
 yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,

-                  yyGLRStack* yystack]b4_pure_formals[)
+                  yyGLRStack* yystackp]b4_pure_formals[)

 {
 {

-  /* `Unused' warnings.  */
-  (void) yyx0;
-  (void) yyx1;
+  YYUSE (yyx0);
+  YYUSE (yyx1);

 
 #if YYDEBUG
   YYFPRINTF (stderr, "Ambiguity detected.\n");
 
 #if YYDEBUG
   YYFPRINTF (stderr, "Ambiguity detected.\n");


@@ -1440,126 +1793,149 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1,
   yyreportTree (yyx1, 2);
   YYFPRINTF (stderr, "\n");
 #endif
   yyreportTree (yyx1, 2);
   YYFPRINTF (stderr, "\n");
 #endif

-  yyFail (yystack][]b4_pure_args[, "ambiguity detected");
+  yyFail (yystackp][]b4_pure_args[, YY_("syntax is ambiguous"));

 }
 
 
 }
 
 

-/** Resolve the ambiguity represented by OPTIONLIST, perform the indicated
- *  actions, and return the result. */
+/** Resolve the ambiguity represented in state S, perform the indicated
+ *  actions, and return the result.  */

 static YYRESULTTAG
 static YYRESULTTAG

-yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack,
-               YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[)
+yyresolveValue (yyGLRState* yys, yyGLRStack* yystackp, YYSTYPE* yyvalp,
+               YYLTYPE* yylocp]b4_user_formals[)

 {
 {

+  yySemanticOption* yyoptionList = yys->yysemantics.yyfirstVal;

   yySemanticOption* yybest;
   yySemanticOption* yybest;

-  yySemanticOption* yyp;
-  int yymerge;
+  yySemanticOption** yypp;
+  yybool yymerge;

 
   yybest = yyoptionList;
 
   yybest = yyoptionList;

-  yymerge = 0;
-  for (yyp = yyoptionList->yynext; yyp != NULL; yyp = yyp->yynext)
+  yymerge = yyfalse;
+  for (yypp = &yyoptionList->yynext; *yypp != NULL; )

     {
     {

+      yySemanticOption* yyp = *yypp;
+

       if (yyidenticalOptions (yybest, yyp))
       if (yyidenticalOptions (yybest, yyp))

-       yymergeOptionSets (yybest, yyp);
+       {
+         yymergeOptionSets (yybest, yyp);
+         *yypp = yyp->yynext;
+       }

       else
       else

-       switch (yypreference (yybest, yyp))
-         {
-         case 0:
-           yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[);
-           break;
-         case 1:
-           yymerge = 1;
-           break;
-         case 2:
-           break;
-         case 3:
-           yybest = yyp;
-           yymerge = 0;
-           break;
-         }
+       {
+         switch (yypreference (yybest, yyp))
+           {
+           case 0:
+             yyreportAmbiguity (yybest, yyp, yystackp]b4_pure_args[);
+             break;
+           case 1:
+             yymerge = yytrue;
+             break;
+           case 2:
+             break;
+           case 3:
+             yybest = yyp;
+             yymerge = yyfalse;
+             break;
+           default:
+             /* This cannot happen so it is not worth a YYASSERT (yyfalse),
+                but some compilers complain if the default case is
+                omitted.  */
+             break;
+           }
+         yypp = &yyp->yynext;
+       }

     }
 
   if (yymerge)
     {
     }
 
   if (yymerge)
     {

+      yySemanticOption* yyp;

       int yyprec = yydprec[yybest->yyrule];
       int yyprec = yydprec[yybest->yyrule];

-      YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[));
+      YYCHK (yyresolveAction (yybest, yystackp, yyvalp, yylocp]b4_user_args[));

       for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext)
        {
          if (yyprec == yydprec[yyp->yyrule])
            {
              YYSTYPE yyval1;
              YYLTYPE yydummy;
       for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext)
        {
          if (yyprec == yydprec[yyp->yyrule])
            {
              YYSTYPE yyval1;
              YYLTYPE yydummy;

-             YYCHK (yyresolveAction (yyp, yystack, &yyval1, &yydummy]b4_user_args[));
+             YYRESULTTAG yyflag = yyresolveAction (yyp, yystackp, &yyval1,
+                                                   &yydummy]b4_user_args[);
+             if (yyflag != yyok)
+               {
+                 yydestruct ("Cleanup: discarding merged value",
+                             yystos[yys->yylrState],
+                             yyvalp]b4_location_if([, yylocp])[]b4_user_args[);
+                 return yyflag;
+               }

              yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1);
            }
        }
       return yyok;
     }
   else
              yyuserMerge (yymerger[yyp->yyrule], yyvalp, &yyval1);
            }
        }
       return yyok;
     }
   else

-    return yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[);
+    return yyresolveAction (yybest, yystackp, yyvalp, yylocp]b4_user_args[);

 }
 
 static YYRESULTTAG
 }
 
 static YYRESULTTAG

-yyresolveStack (yyGLRStack* yystack]b4_user_formals[)
+yyresolveStack (yyGLRStack* yystackp]b4_user_formals[)

 {
 {

-  if (yystack->yysplitPoint != NULL)
+  if (yystackp->yysplitPoint != NULL)

     {
       yyGLRState* yys;
       int yyn;
 
     {
       yyGLRState* yys;
       int yyn;
 

-      for (yyn = 0, yys = yystack->yytops.yystates[0];
-          yys != yystack->yysplitPoint;
+      for (yyn = 0, yys = yystackp->yytops.yystates[0];
+          yys != yystackp->yysplitPoint;

           yys = yys->yypred, yyn += 1)
        continue;
           yys = yys->yypred, yyn += 1)
        continue;

-      YYCHK (yyresolveStates (yystack->yytops.yystates[0], yyn, yystack
+      YYCHK (yyresolveStates (yystackp->yytops.yystates[0], yyn, yystackp

                             ]b4_user_args[));
     }
   return yyok;
 }
 
 static void
                             ]b4_user_args[));
     }
   return yyok;
 }
 
 static void

-yycompressStack (yyGLRStack* yystack)
+yycompressStack (yyGLRStack* yystackp)

 {
   yyGLRState* yyp, *yyq, *yyr;
 
 {
   yyGLRState* yyp, *yyq, *yyr;
 

-  if (yystack->yytops.yysize != 1 || yystack->yysplitPoint == NULL)
+  if (yystackp->yytops.yysize != 1 || yystackp->yysplitPoint == NULL)

     return;
 
     return;
 

-  for (yyp = yystack->yytops.yystates[0], yyq = yyp->yypred, yyr = NULL;
-       yyp != yystack->yysplitPoint;
+  for (yyp = yystackp->yytops.yystates[0], yyq = yyp->yypred, yyr = NULL;
+       yyp != yystackp->yysplitPoint;

        yyr = yyp, yyp = yyq, yyq = yyp->yypred)
     yyp->yypred = yyr;
 
        yyr = yyp, yyp = yyq, yyq = yyp->yypred)
     yyp->yypred = yyr;
 

-  yystack->yyspaceLeft += yystack->yynextFree - yystack->yyitems;
-  yystack->yynextFree = ((yyGLRStackItem*) yystack->yysplitPoint) + 1;
-  yystack->yyspaceLeft -= yystack->yynextFree - yystack->yyitems;
-  yystack->yysplitPoint = NULL;
-  yystack->yylastDeleted = NULL;
+  yystackp->yyspaceLeft += yystackp->yynextFree - yystackp->yyitems;
+  yystackp->yynextFree = ((yyGLRStackItem*) yystackp->yysplitPoint) + 1;
+  yystackp->yyspaceLeft -= yystackp->yynextFree - yystackp->yyitems;
+  yystackp->yysplitPoint = NULL;
+  yystackp->yylastDeleted = NULL;

 
   while (yyr != NULL)
     {
 
   while (yyr != NULL)
     {

-      yystack->yynextFree->yystate = *yyr;
+      yystackp->yynextFree->yystate = *yyr;

       yyr = yyr->yypred;
       yyr = yyr->yypred;

-      yystack->yynextFree->yystate.yypred = & yystack->yynextFree[-1].yystate;
-      yystack->yytops.yystates[0] = &yystack->yynextFree->yystate;
-      yystack->yynextFree += 1;
-      yystack->yyspaceLeft -= 1;
+      yystackp->yynextFree->yystate.yypred = &yystackp->yynextFree[-1].yystate;
+      yystackp->yytops.yystates[0] = &yystackp->yynextFree->yystate;
+      yystackp->yynextFree += 1;
+      yystackp->yyspaceLeft -= 1;

     }
 }
 
 static YYRESULTTAG
     }
 }
 
 static YYRESULTTAG

-yyprocessOneStack (yyGLRStack* yystack, int yyk,
-                  size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp
-                 ]b4_user_formals[)
+yyprocessOneStack (yyGLRStack* yystackp, size_t yyk,
+                  size_t yyposn]b4_pure_formals[)

 {
   int yyaction;
   const short int* yyconflicts;
   yyRuleNum yyrule;
 {
   int yyaction;
   const short int* yyconflicts;
   yyRuleNum yyrule;

-  yySymbol* const yytokenp = yystack->yytokenp;
+  yySymbol* const yytokenp = yystackp->yytokenp;

 
 

-  while (yystack->yytops.yystates[yyk] != NULL)
+  while (yystackp->yytops.yystates[yyk] != NULL)

     {
     {

-      yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState;
-      YYDPRINTF ((stderr, "Stack %d Entering state %d\n", yyk, yystate));
+      yyStateNum yystate = yystackp->yytops.yystates[yyk]->yylrState;
+      YYDPRINTF ((stderr, "Stack %lu Entering state %d\n",
+                 (unsigned long int) yyk, yystate));

 
       YYASSERT (yystate != YYFINAL);
 
 
       YYASSERT (yystate != YYFINAL);
 


@@ -1568,78 +1944,84 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk,
          yyrule = yydefaultAction (yystate);
          if (yyrule == 0)
            {
          yyrule = yydefaultAction (yystate);
          if (yyrule == 0)
            {

-             YYDPRINTF ((stderr, "Stack %d dies.\n", yyk));
-             yymarkStackDeleted (yystack, yyk);
+             YYDPRINTF ((stderr, "Stack %lu dies.\n",
+                         (unsigned long int) yyk));
+             yymarkStackDeleted (yystackp, yyk);

              return yyok;
            }
              return yyok;
            }

-         YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_lpure_args[));
+         YYCHK (yyglrReduce (yystackp, yyk, yyrule, yyfalse]b4_user_args[));

        }
       else
        {
        }
       else
        {

+         yystackp->yytops.yylookaheadNeeds[yyk] = yytrue;

          if (*yytokenp == YYEMPTY)
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;
              *yytokenp = YYTRANSLATE (yychar);
          if (*yytokenp == YYEMPTY)
            {
              YYDPRINTF ((stderr, "Reading a token: "));
              yychar = YYLEX;
              *yytokenp = YYTRANSLATE (yychar);

-             YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
+             YY_SYMBOL_PRINT ("Next token is", *yytokenp, &yylval, &yylloc);

            }
          yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
 
          while (*yyconflicts != 0)
            {
            }
          yygetLRActions (yystate, *yytokenp, &yyaction, &yyconflicts);
 
          while (*yyconflicts != 0)
            {

-             int yynewStack = yysplitStack (yystack, yyk);
-             YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n",
-                         yynewStack, yyk));
-             YYCHK (yyglrReduce (yystack, yynewStack,
-                                 *yyconflicts, yyfalse]b4_lpure_args[));
-             YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn,
-                                       yylvalp, yyllocp]b4_user_args[));
+             size_t yynewStack = yysplitStack (yystackp, yyk);
+             YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n",
+                         (unsigned long int) yynewStack,
+                         (unsigned long int) yyk));
+             YYCHK (yyglrReduce (yystackp, yynewStack,
+                                 *yyconflicts, yyfalse]b4_user_args[));
+             YYCHK (yyprocessOneStack (yystackp, yynewStack,
+                                       yyposn]b4_pure_args[));

              yyconflicts += 1;
            }
 
          if (yyisShiftAction (yyaction))
              yyconflicts += 1;
            }
 
          if (yyisShiftAction (yyaction))

-           {
-             YYDPRINTF ((stderr, "On stack %d, ", yyk));
-             YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp);
-             yyglrShift (yystack, yyk, yyaction, yyposn+1,
-                         *yylvalp, yyllocp]b4_user_args[);
-             YYDPRINTF ((stderr, ", now in state #%d\n",
-                         yystack->yytops.yystates[yyk]->yylrState));
-             break;
-           }
+           break;

          else if (yyisErrorAction (yyaction))
            {
          else if (yyisErrorAction (yyaction))
            {

-             YYDPRINTF ((stderr, "Stack %d dies.\n", yyk));
-             yymarkStackDeleted (yystack, yyk);
+             YYDPRINTF ((stderr, "Stack %lu dies.\n",
+                         (unsigned long int) yyk));
+             yymarkStackDeleted (yystackp, yyk);

              break;
            }
          else
              break;
            }
          else

-           YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_lpure_args[));
+           YYCHK (yyglrReduce (yystackp, yyk, -yyaction,
+                               yyfalse]b4_user_args[));

        }
     }
   return yyok;
 }
 
        }
     }
   return yyok;
 }
 

-static void
-yyreportSyntaxError (yyGLRStack* yystack,
-                    YYSTYPE* yylvalp, YYLTYPE* yyllocp]b4_user_formals[)
+/*ARGSUSED*/ static void
+yyreportSyntaxError (yyGLRStack* yystackp]b4_user_formals[)

 {
 {

-  /* `Unused' warnings. */
-  (void) yylvalp;
-  (void) yyllocp;
-
-  if (yystack->yyerrState == 0)
+  if (yystackp->yyerrState == 0)

     {
 #if YYERROR_VERBOSE
     {
 #if YYERROR_VERBOSE

-      yySymbol* const yytokenp = yystack->yytokenp;
+      yySymbol* const yytokenp = yystackp->yytokenp;

       int yyn;
       int yyn;

-      yyn = yypact[yystack->yytops.yystates[0]->yylrState];
+      yyn = yypact[yystackp->yytops.yystates[0]->yylrState];

       if (YYPACT_NINF < yyn && yyn < YYLAST)
        {
       if (YYPACT_NINF < yyn && yyn < YYLAST)
        {

-         size_t yysize = 0;
-         const char* yyprefix;
-         char* yymsg;
+         size_t yysize0 = yytnamerr (NULL, yytokenName (*yytokenp));
+         size_t yysize = yysize0;
+         size_t yysize1;
+         yybool yysize_overflow = yyfalse;
+         char* yymsg = NULL;
+         enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+         char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];

          int yyx;
          int yyx;

+         char *yyfmt;
+         char const *yyf;
+         static char const yyunexpected[] = "syntax error, unexpected %s";
+         static char const yyexpecting[] = ", expecting %s";
+         static char const yyor[] = " or %s";
+         char yyformat[sizeof yyunexpected
+                       + sizeof yyexpecting - 1
+                       + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2)
+                          * (sizeof yyor - 1))];
+         char const *yyprefix = yyexpecting;

 
          /* Start YYX at -YYN if negative to avoid negative indexes in
             YYCHECK.  */
 
          /* Start YYX at -YYN if negative to avoid negative indexes in
             YYCHECK.  */


@@ -1648,112 +2030,110 @@ yyreportSyntaxError (yyGLRStack* yystack,
          /* Stay within bounds of both yycheck and yytname.  */
          int yychecklim = YYLAST - yyn;
          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;
          /* Stay within bounds of both yycheck and yytname.  */
          int yychecklim = YYLAST - yyn;
          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;

-         int yycount = 0;
+         int yycount = 1;
+
+         yyarg[0] = yytokenName (*yytokenp);
+         yyfmt = yystpcpy (yyformat, yyunexpected);

 
 

-         yyprefix = ", expecting ";

          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
              {
          for (yyx = yyxbegin; yyx < yyxend; ++yyx)
            if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
              {

-               yysize += strlen (yyprefix) + strlen (yytokenName (yyx));
-               yycount += 1;
-               if (yycount == 5)
+               if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM)

                  {
                  {

-                   yysize = 0;
+                   yycount = 1;
+                   yysize = yysize0;
+                   yyformat[sizeof yyunexpected - 1] = '\0';

                    break;
                  }
                    break;
                  }

-               yyprefix = " or ";
+               yyarg[yycount++] = yytokenName (yyx);
+               yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx));
+               yysize_overflow |= yysize1 < yysize;
+               yysize = yysize1;
+               yyfmt = yystpcpy (yyfmt, yyprefix);
+               yyprefix = yyor;

              }
              }

-         yysize += (sizeof ("syntax error, unexpected ")
-                    + strlen (yytokenName (*yytokenp)));
-         yymsg = (char*) YYMALLOC (yysize);
-         if (yymsg != 0)
+
+         yyf = YY_(yyformat);
+         yysize1 = yysize + strlen (yyf);
+         yysize_overflow |= yysize1 < yysize;
+         yysize = yysize1;
+
+         if (!yysize_overflow)
+           yymsg = (char *) YYMALLOC (yysize);
+
+         if (yymsg)

            {
            {

-             char* yyp = yymsg;
-             sprintf (yyp, "syntax error%s%s",
-                      (*yytokenp == YYEMPTY ? "" : ", unexpected "),
-                      yytokenName (*yytokenp));
-             yyp += strlen (yyp);
-             if (yycount < 5)
+             char *yyp = yymsg;
+             int yyi = 0;
+             while ((*yyp = *yyf))

                {
                {

-                 yyprefix = ", expecting ";
-                 for (yyx = yyxbegin; yyx < yyxend; ++yyx)
-                   if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
-                     {
-                       sprintf (yyp, "%s%s", yyprefix, yytokenName (yyx));
-                       yyp += strlen (yyp);
-                       yyprefix = " or ";
-                     }
+                 if (*yyp == '%' && yyf[1] == 's' && yyi < yycount)
+                   {
+                     yyp += yytnamerr (yyp, yyarg[yyi++]);
+                     yyf += 2;
+                   }
+                 else
+                   {
+                     yyp++;
+                     yyf++;
+                   }

                }
              yyerror (]b4_lyyerror_args[yymsg);
              YYFREE (yymsg);
            }
          else
                }
              yyerror (]b4_lyyerror_args[yymsg);
              YYFREE (yymsg);
            }
          else

-           yyerror (]b4_lyyerror_args["syntax error; also virtual memory exhausted");
+           {
+             yyerror (]b4_lyyerror_args[YY_("syntax error"));
+             yyMemoryExhausted (yystackp);
+           }

        }
       else
 #endif /* YYERROR_VERBOSE */
        }
       else
 #endif /* YYERROR_VERBOSE */

-       yyerror (]b4_lyyerror_args["syntax error");
+       yyerror (]b4_lyyerror_args[YY_("syntax error"));

       yynerrs += 1;
     }
 }
 
       yynerrs += 1;
     }
 }
 

-/* Recover from a syntax error on YYSTACK, assuming that YYTOKENP,
-   YYLVALP, and YYLLOCP point to the syntactic category, semantic
-   value, and location of the look-ahead.  */
-static void
-yyrecoverSyntaxError (yyGLRStack* yystack,
-                     YYSTYPE* yylvalp,
-                     YYLTYPE* yyllocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[
-                     ]b4_user_formals[)
+/* Recover from a syntax error on *YYSTACKP, assuming that *YYSTACKP->YYTOKENP,
+   yylval, and yylloc are the syntactic category, semantic value, and location
+   of the look-ahead.  */
+/*ARGSUSED*/ static void
+yyrecoverSyntaxError (yyGLRStack* yystackp]b4_user_formals[)

 {
 {

-  yySymbol* const yytokenp = yystack->yytokenp;
+  yySymbol* const yytokenp = yystackp->yytokenp;

   size_t yyk;
   int yyj;
 
   size_t yyk;
   int yyj;
 

-  if (yystack->yyerrState == 3)
+  if (yystackp->yyerrState == 3)

     /* We just shifted the error token and (perhaps) took some
        reductions.  Skip tokens until we can proceed.  */
     /* We just shifted the error token and (perhaps) took some
        reductions.  Skip tokens until we can proceed.  */

-    while (yytrue)
+    while (YYID (yytrue))

       {
        if (*yytokenp == YYEOF)
       {
        if (*yytokenp == YYEOF)

-         {
-           /* Now pop stack until empty and fail. */
-           while (yystack->yytops.yystates[0] != NULL)
-             {
-               yyGLRState *yys = yystack->yytops.yystates[0];
-]b4_location_if([[             yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
-               yydestruct ("Error: popping",
-                            yystos[yys->yylrState],
-                           &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
-               yystack->yytops.yystates[0] = yys->yypred;
-               yystack->yynextFree -= 1;
-               yystack->yyspaceLeft += 1;
-             }
-           yyFail (yystack][]b4_lpure_args[, NULL);
-         }
+         yyFail (yystackp][]b4_lpure_args[, NULL);

        if (*yytokenp != YYEMPTY)
          {]b4_location_if([[
            /* We throw away the lookahead, but the error range
        if (*yytokenp != YYEMPTY)
          {]b4_location_if([[
            /* We throw away the lookahead, but the error range

-              of the shifted error token must take it into account. */
-           yyGLRState *yys = yystack->yytops.yystates[0];
+              of the shifted error token must take it into account.  */
+           yyGLRState *yys = yystackp->yytops.yystates[0];

            yyGLRStackItem yyerror_range[3];
            yyerror_range[1].yystate.yyloc = yys->yyloc;
            yyGLRStackItem yyerror_range[3];
            yyerror_range[1].yystate.yyloc = yys->yyloc;

-           yyerror_range[2].yystate.yyloc = *yyllocp;
+           yyerror_range[2].yystate.yyloc = yylloc;

            YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[
            yydestruct ("Error: discarding",
            YYLLOC_DEFAULT (yys->yyloc, yyerror_range, 2);]])[
            yydestruct ("Error: discarding",

-                       *yytokenp, yylvalp]b4_location_if([, yyllocp])[);
+                       *yytokenp, &yylval]b4_location_if([, &yylloc])[]b4_user_args[);

          }
        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;
        *yytokenp = YYTRANSLATE (yychar);
          }
        YYDPRINTF ((stderr, "Reading a token: "));
        yychar = YYLEX;
        *yytokenp = YYTRANSLATE (yychar);

-       YY_SYMBOL_PRINT ("Next token is", *yytokenp, yylvalp, yyllocp);
-       yyj = yypact[yystack->yytops.yystates[0]->yylrState];
+       YY_SYMBOL_PRINT ("Next token is", *yytokenp, &yylval, &yylloc);
+       yyj = yypact[yystackp->yytops.yystates[0]->yylrState];

        if (yyis_pact_ninf (yyj))
          return;
        yyj += *yytokenp;
        if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp)
          {
        if (yyis_pact_ninf (yyj))
          return;
        yyj += *yytokenp;
        if (yyj < 0 || YYLAST < yyj || yycheck[yyj] != *yytokenp)
          {

-           if (yydefact[yystack->yytops.yystates[0]->yylrState] != 0)
+           if (yydefact[yystackp->yytops.yystates[0]->yylrState] != 0)

              return;
          }
        else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))
              return;
          }
        else if (yytable[yyj] != 0 && ! yyis_table_ninf (yytable[yyj]))


@@ -1761,21 +2141,21 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
       }
 
   /* Reduce to one stack.  */
       }
 
   /* Reduce to one stack.  */

-  for (yyk = 0; yyk < yystack->yytops.yysize; yyk += 1)
-    if (yystack->yytops.yystates[yyk] != NULL)
+  for (yyk = 0; yyk < yystackp->yytops.yysize; yyk += 1)
+    if (yystackp->yytops.yystates[yyk] != NULL)

       break;
       break;

-  if (yyk >= yystack->yytops.yysize)
-    yyFail (yystack][]b4_lpure_args[, NULL);
-  for (yyk += 1; yyk < yystack->yytops.yysize; yyk += 1)
-    yymarkStackDeleted (yystack, yyk);
-  yyremoveDeletes (yystack);
-  yycompressStack (yystack);
-
-  /* Now pop stack until we find a state that shifts the error token. */
-  yystack->yyerrState = 3;
-  while (yystack->yytops.yystates[0] != NULL)
+  if (yyk >= yystackp->yytops.yysize)
+    yyFail (yystackp][]b4_lpure_args[, NULL);
+  for (yyk += 1; yyk < yystackp->yytops.yysize; yyk += 1)
+    yymarkStackDeleted (yystackp, yyk);
+  yyremoveDeletes (yystackp);
+  yycompressStack (yystackp);
+
+  /* Now pop stack until we find a state that shifts the error token.  */
+  yystackp->yyerrState = 3;
+  while (yystackp->yytops.yystates[0] != NULL)

     {
     {

-      yyGLRState *yys = yystack->yytops.yystates[0];
+      yyGLRState *yys = yystackp->yytops.yystates[0];

       yyj = yypact[yys->yylrState];
       if (! yyis_pact_ninf (yyj))
        {
       yyj = yypact[yys->yylrState];
       if (! yyis_pact_ninf (yyj))
        {


@@ -1785,43 +2165,41 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
            {
              /* Shift the error token having adjusted its location.  */
              YYLTYPE yyerrloc;]b4_location_if([[
            {
              /* Shift the error token having adjusted its location.  */
              YYLTYPE yyerrloc;]b4_location_if([[

-             yystack->yyerror_range[2].yystate.yyloc = *yyllocp;
-             YYLLOC_DEFAULT (yyerrloc, yystack->yyerror_range, 2);]])[
+             yystackp->yyerror_range[2].yystate.yyloc = yylloc;
+             YYLLOC_DEFAULT (yyerrloc, yystackp->yyerror_range, 2);]])[

              YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],
              YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]],

-                              yylvalp, &yyerrloc);
-             yyglrShift (yystack, 0, yytable[yyj],
-                         yys->yyposn, *yylvalp, &yyerrloc]b4_user_args[);
-             yys = yystack->yytops.yystates[0];
+                              &yylval, &yyerrloc);
+             yyglrShift (yystackp, 0, yytable[yyj],
+                         yys->yyposn, &yylval, &yyerrloc);
+             yys = yystackp->yytops.yystates[0];

              break;
            }
        }
              break;
            }
        }

-]b4_location_if([[      yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
-      yydestruct ("Error: popping",
-                 yystos[yys->yylrState],
-                 &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[);
-      yystack->yytops.yystates[0] = yys->yypred;
-      yystack->yynextFree -= 1;
-      yystack->yyspaceLeft += 1;
+]b4_location_if([[      yystackp->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[
+      yydestroyGLRState ("Error: popping", yys]b4_user_args[);
+      yystackp->yytops.yystates[0] = yys->yypred;
+      yystackp->yynextFree -= 1;
+      yystackp->yyspaceLeft += 1;

     }
     }

-  if (yystack->yytops.yystates[0] == NULL)
-    yyFail (yystack][]b4_lpure_args[, NULL);
+  if (yystackp->yytops.yystates[0] == NULL)
+    yyFail (yystackp][]b4_lpure_args[, NULL);

 }
 
 #define YYCHK1(YYE)                                                         \
   do {                                                                      \
     switch (YYE) {                                                          \
 }
 
 #define YYCHK1(YYE)                                                         \
   do {                                                                      \
     switch (YYE) {                                                          \

-    default:                                                                \
+    case yyok:                                                              \

       break;                                                                \
     case yyabort:                                                           \
       break;                                                                \
     case yyabort:                                                           \

-      yystack.yyerrflag = 1;                                                \
-      goto yyDone;                                                          \
+      goto yyabortlab;                                                      \

     case yyaccept:                                                          \
     case yyaccept:                                                          \

-      yystack.yyerrflag = 0;                                                \
-      goto yyDone;                                                          \
+      goto yyacceptlab;                                                             \

     case yyerr:                                                                     \
       goto yyuser_error;                                                    \
     case yyerr:                                                                     \
       goto yyuser_error;                                                    \

+    default:                                                                \
+      goto yybuglab;                                                        \

     }                                                                       \
     }                                                                       \

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

 
 
 /*----------.
 
 
 /*----------.


@@ -1830,28 +2208,16 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
 
 ]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[
 {
 
 ]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[
 {

+  int yyresult;

   yySymbol yytoken;
   yyGLRStack yystack;
   yySymbol yytoken;
   yyGLRStack yystack;

+  yyGLRStack* const yystackp = &yystack;

   size_t yyposn;
   size_t yyposn;

-]b4_pure_if(
-[
-  YYSTYPE yylval;
-  YYLTYPE yylloc;
-  #undef yychar
-  #define yychar (yystack.yyrawchar)
-])[
-
-  YYSTYPE* const yylvalp = &yylval;
-  YYLTYPE* const yyllocp = &yylloc;
-
-  yyinitGLRStack (&yystack, YYINITDEPTH);
-  yystack.yytokenp = &yytoken;

 
   YYDPRINTF ((stderr, "Starting parse\n"));
 
 
   YYDPRINTF ((stderr, "Starting parse\n"));
 

-  if (setjmp (yystack.yyexception_buffer) != 0)
-    goto yyDone;
-
+  yychar = YYEMPTY;
+  yytoken = YYEMPTY;

   yylval = yyval_default;
 ]b4_location_if([
 #if YYLTYPE_IS_TRIVIAL
   yylval = yyval_default;
 ]b4_location_if([
 #if YYLTYPE_IS_TRIVIAL


@@ -1860,45 +2226,54 @@ yyrecoverSyntaxError (yyGLRStack* yystack,
 #endif
 ])
 m4_ifdef([b4_initial_action], [
 #endif
 ])
 m4_ifdef([b4_initial_action], [

-m4_pushdef([b4_at_dollar],     [yylval])dnl
-m4_pushdef([b4_dollar_dollar], [yylloc])dnl
-  /* User initialization code. */
+m4_pushdef([b4_at_dollar],     [yylloc])dnl
+m4_pushdef([b4_dollar_dollar], [yylval])dnl
+  /* User initialization code.  */

   b4_initial_action
 m4_popdef([b4_dollar_dollar])dnl
 m4_popdef([b4_at_dollar])dnl
 /* Line __line__ of glr.c.  */
 b4_syncline([@oline@], [@ofile@])])dnl
 [
   b4_initial_action
 m4_popdef([b4_dollar_dollar])dnl
 m4_popdef([b4_at_dollar])dnl
 /* Line __line__ of glr.c.  */
 b4_syncline([@oline@], [@ofile@])])dnl
 [

-  yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc]b4_user_args[);
-  yytoken = YYEMPTY;
+  if (! yyinitGLRStack (yystackp, YYINITDEPTH))
+    goto yyexhaustedlab;
+  switch (YYSETJMP (yystack.yyexception_buffer))
+    {
+    case 0: break;
+    case 1: goto yyabortlab;
+    case 2: goto yyexhaustedlab;
+    default: goto yybuglab;
+    }
+  yystack.yytokenp = &yytoken;
+  yyglrShift (&yystack, 0, 0, 0, &yylval, &yylloc);

   yyposn = 0;
 
   yyposn = 0;
 

-  while (yytrue)
+  while (YYID (yytrue))

     {
       /* For efficiency, we have two loops, the first of which is
         specialized to deterministic operation (single stack, no
         potential ambiguity).  */
       /* Standard mode */
     {
       /* For efficiency, we have two loops, the first of which is
         specialized to deterministic operation (single stack, no
         potential ambiguity).  */
       /* Standard mode */

-      while (yytrue)
+      while (YYID (yytrue))

        {
          yyRuleNum yyrule;
          int yyaction;
          const short int* yyconflicts;
 
          yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;
        {
          yyRuleNum yyrule;
          int yyaction;
          const short int* yyconflicts;
 
          yyStateNum yystate = yystack.yytops.yystates[0]->yylrState;

-          YYDPRINTF ((stderr, "Entering state %d\n", yystate));
+         YYDPRINTF ((stderr, "Entering state %d\n", yystate));

          if (yystate == YYFINAL)
          if (yystate == YYFINAL)

-           goto yyDone;
+           goto yyacceptlab;

          if (yyisDefaultedState (yystate))
            {
              yyrule = yydefaultAction (yystate);
              if (yyrule == 0)
                {
          if (yyisDefaultedState (yystate))
            {
              yyrule = yydefaultAction (yystate);
              if (yyrule == 0)
                {

-]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
-                 yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
+]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+                 yyreportSyntaxError (&yystack]b4_user_args[);

                  goto yyuser_error;
                }
                  goto yyuser_error;
                }

-             YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_lpure_args[));
+             YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_user_args[));

            }
          else
            {
            }
          else
            {


@@ -1907,52 +2282,102 @@ b4_syncline([@oline@], [@ofile@])])dnl
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;
                  yytoken = YYTRANSLATE (yychar);
                  YYDPRINTF ((stderr, "Reading a token: "));
                  yychar = YYLEX;
                  yytoken = YYTRANSLATE (yychar);

-                  YY_SYMBOL_PRINT ("Next token is", yytoken, yylvalp, yyllocp);
+                 YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc);

                }
              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {
                }
              yygetLRActions (yystate, yytoken, &yyaction, &yyconflicts);
              if (*yyconflicts != 0)
                break;
              if (yyisShiftAction (yyaction))
                {

-                 YY_SYMBOL_PRINT ("Shifting", yytoken, yylvalp, yyllocp);
+                 YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc);

                  if (yytoken != YYEOF)
                  if (yytoken != YYEOF)

-                   yytoken = YYEMPTY;
+                   {
+                     yychar = YYEMPTY;
+                     yytoken = YYEMPTY;
+                   }

                  yyposn += 1;
                  yyposn += 1;

-                 yyglrShift (&yystack, 0, yyaction, yyposn,
-                             yylval, yyllocp]b4_user_args[);
+                 yyglrShift (&yystack, 0, yyaction, yyposn, &yylval, &yylloc);

                  if (0 < yystack.yyerrState)
                    yystack.yyerrState -= 1;
                }
              else if (yyisErrorAction (yyaction))
                {
                  if (0 < yystack.yyerrState)
                    yystack.yyerrState -= 1;
                }
              else if (yyisErrorAction (yyaction))
                {

-]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
-                 yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
+]b4_location_if([[               yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+                 yyreportSyntaxError (&yystack]b4_user_args[);

                  goto yyuser_error;
                }
              else
                  goto yyuser_error;
                }
              else

-               YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_lpure_args[));
+               YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_user_args[));

            }
        }
 
            }
        }
 

-      while (yytrue)
+      while (YYID (yytrue))

        {
        {

-         int yys;
-         int yyn = yystack.yytops.yysize;
+         yySymbol yytoken_to_shift;
+         size_t yys;
+         size_t yyn = yystack.yytops.yysize;
+

          for (yys = 0; yys < yyn; yys += 1)
          for (yys = 0; yys < yyn; yys += 1)

-           YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn,
-                                      yylvalp, yyllocp]b4_user_args[));
+           yystackp->yytops.yylookaheadNeeds[yys] = yychar != YYEMPTY;
+
+         /* yyprocessOneStack returns one of three things:
+
+             - An error flag.  If the caller is yyprocessOneStack, it
+               immediately returns as well.  When the caller is finally
+               yyparse, it jumps to an error label via YYCHK1.
+
+             - yyok, but yyprocessOneStack has invoked yymarkStackDeleted
+               (&yystack, yys), which sets the top state of yys to NULL.  Thus,
+               yyparse's following invocation of yyremoveDeletes will remove
+               the stack.
+
+             - yyok, when ready to shift a token.
+
+            Except in the first case, yyparse will invoke yyremoveDeletes and
+            then shift the next token onto all remaining stacks.  This
+            synchronization of the shift (that is, after all preceding
+            reductions on all stacks) helps prevents double destructor calls
+            on yylval in the event of memory exhaustion.  */
+
+         for (yys = 0; yys < yyn; yys += 1)
+           YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn]b4_lpure_args[));
+         yyremoveDeletes (&yystack);
+         yyn = yystack.yytops.yysize;
+
+         /* If any yyglrShift call fails, it will fail after shifting.  Thus,
+            a copy of yylval will already be on stack 0 in the event of a
+            failure in the following loop.  Thus, yytoken is set to YYEMPTY
+            before the loop to make sure the user destructor for yylval isn't
+            called twice.  */
+         yytoken_to_shift = yytoken;
+         yychar = YYEMPTY;

          yytoken = YYEMPTY;
          yyposn += 1;
          yytoken = YYEMPTY;
          yyposn += 1;

-         yyremoveDeletes (&yystack);
+         for (yys = 0; yys < yyn; yys += 1)
+           {
+             int yyaction;
+             const short int* yyconflicts;
+             yyStateNum yystate = yystack.yytops.yystates[yys]->yylrState;
+             yygetLRActions (yystate, yytoken_to_shift, &yyaction,
+                             &yyconflicts);
+             /* Note that yyconflicts were handled by yyprocessOneStack.  */
+             YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yys));
+             YY_SYMBOL_PRINT ("shifting", yytoken_to_shift, &yylval, &yylloc);
+             yyglrShift (&yystack, yys, yyaction, yyposn,
+                         &yylval, &yylloc);
+             YYDPRINTF ((stderr, "Stack %lu now in state #%d\n",
+                         (unsigned long int) yys,
+                         yystack.yytops.yystates[yys]->yylrState));
+           }

          if (yystack.yytops.yysize == 0)
            {
              yyundeleteLastStack (&yystack);
              if (yystack.yytops.yysize == 0)
          if (yystack.yytops.yysize == 0)
            {
              yyundeleteLastStack (&yystack);
              if (yystack.yytops.yysize == 0)

-               yyFail (&yystack][]b4_lpure_args[, "syntax error");
+               yyFail (&yystack][]b4_lpure_args[, YY_("syntax error"));

              YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));
              YYCHK1 (yyresolveStack (&yystack]b4_user_args[));
              YYDPRINTF ((stderr, "Returning to deterministic operation.\n"));

-]b4_location_if([[           yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[
-             yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
+]b4_location_if([[           yystack.yyerror_range[1].yystate.yyloc = yylloc;]])[
+             yyreportSyntaxError (&yystack]b4_user_args[);

              goto yyuser_error;
            }
          else if (yystack.yytops.yysize == 1)
              goto yyuser_error;
            }
          else if (yystack.yytops.yysize == 1)


@@ -1965,23 +2390,68 @@ b4_syncline([@oline@], [@ofile@])])dnl
        }
       continue;
     yyuser_error:
        }
       continue;
     yyuser_error:

-      yyrecoverSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[);
+      yyrecoverSyntaxError (&yystack]b4_user_args[);

       yyposn = yystack.yytops.yystates[0]->yyposn;
     }
       yyposn = yystack.yytops.yystates[0]->yyposn;
     }

- yyDone:
-  /* On YYABORT, free the lookahead. */
-  if (yystack.yyerrflag == 1 && yytoken != YYEMPTY)
-    yydestruct ("Error: discarding lookahead",
-                yytoken, yylvalp]b4_location_if([, yyllocp])[);
-
-  yyfreeGLRStack (&yystack);
-  return yystack.yyerrflag;
+
+ yyacceptlab:
+  yyresult = 0;
+  goto yyreturn;
+
+ yybuglab:
+  YYASSERT (yyfalse);
+  goto yyabortlab;
+
+ yyabortlab:
+  yyresult = 1;
+  goto yyreturn;
+
+ yyexhaustedlab:
+  yyerror (]b4_lyyerror_args[YY_("memory exhausted"));
+  yyresult = 2;
+  goto yyreturn;
+
+ yyreturn:
+  if (yytoken != YYEOF && yytoken != YYEMPTY)
+    yydestruct ("Cleanup: discarding lookahead",
+               yytoken, &yylval]b4_location_if([, &yylloc])[]b4_user_args[);
+
+  /* If the stack is well-formed, pop the stack until it is empty,
+     destroying its entries as we go.  But free the stack regardless
+     of whether it is well-formed.  */
+  if (yystack.yyitems)
+    {
+      yyGLRState** yystates = yystack.yytops.yystates;
+      if (yystates)
+       {
+         size_t yysize = yystack.yytops.yysize;
+         size_t yyk;
+         for (yyk = 0; yyk < yysize; yyk += 1)
+           if (yystates[yyk])
+             {
+               while (yystates[yyk])
+                 {
+                   yyGLRState *yys = yystates[yyk];
+]b4_location_if([[                 yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]]
+)[                 yydestroyGLRState ("Cleanup: popping", yys]b4_user_args[);
+                   yystates[yyk] = yys->yypred;
+                   yystack.yynextFree -= 1;
+                   yystack.yyspaceLeft += 1;
+                 }
+               break;
+             }
+       }
+      yyfreeGLRStack (&yystack);
+    }
+
+  return yyresult;

 }
 
 /* DEBUGGING ONLY */
 #ifdef YYDEBUG
 }
 
 /* DEBUGGING ONLY */
 #ifdef YYDEBUG

-static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED;
-static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED;
+static void yypstack (yyGLRStack* yystackp, size_t yyk)
+  __attribute__ ((__unused__));
+static void yypdumpstack (yyGLRStack* yystackp) __attribute__ ((__unused__));

 
 static void
 yy_yypstack (yyGLRState* yys)
 
 static void
 yy_yypstack (yyGLRState* yys)


@@ -2005,23 +2475,23 @@ yypstates (yyGLRState* yyst)
 }
 
 static void
 }
 
 static void

-yypstack (yyGLRStack* yystack, int yyk)
+yypstack (yyGLRStack* yystackp, size_t yyk)

 {
 {

-  yypstates (yystack->yytops.yystates[yyk]);
+  yypstates (yystackp->yytops.yystates[yyk]);

 }
 
 #define YYINDEX(YYX)                                                        \
 }
 
 #define YYINDEX(YYX)                                                        \

-    ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystack->yyitems)
+    ((YYX) == NULL ? -1 : (yyGLRStackItem*) (YYX) - yystackp->yyitems)

 
 
 static void
 
 
 static void

-yypdumpstack (yyGLRStack* yystack)
+yypdumpstack (yyGLRStack* yystackp)

 {
   yyGLRStackItem* yyp;
   size_t yyi;
 {
   yyGLRStackItem* yyp;
   size_t yyi;

-  for (yyp = yystack->yyitems; yyp < yystack->yynextFree; yyp += 1)
+  for (yyp = yystackp->yyitems; yyp < yystackp->yynextFree; yyp += 1)

     {
     {

-      fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystack->yyitems));
+      fprintf (stderr, "%3lu. ", (unsigned long int) (yyp - yystackp->yyitems));

       if (*(yybool *) yyp)
        {
          fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",
       if (*(yybool *) yyp)
        {
          fprintf (stderr, "Res: %d, LR State: %d, posn: %lu, pred: %ld",


@@ -2042,9 +2512,9 @@ yypdumpstack (yyGLRStack* yystack)
       fprintf (stderr, "\n");
     }
   fprintf (stderr, "Tops:");
       fprintf (stderr, "\n");
     }
   fprintf (stderr, "Tops:");

-  for (yyi = 0; yyi < yystack->yytops.yysize; yyi += 1)
+  for (yyi = 0; yyi < yystackp->yytops.yysize; yyi += 1)

     fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi,
     fprintf (stderr, "%lu: %ld; ", (unsigned long int) yyi,

-            (long int) YYINDEX (yystack->yytops.yystates[yyi]));
+            (long int) YYINDEX (yystackp->yytops.yystates[yyi]));

   fprintf (stderr, "\n");
 }
 #endif
   fprintf (stderr, "\n");
 }
 #endif


@@ -2053,39 +2523,15 @@ yypdumpstack (yyGLRStack* yystack)
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],
 [@output @output_header_name@
 b4_epilogue
 m4_if(b4_defines_flag, 0, [],
 [@output @output_header_name@

-b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004])
+b4_copyright([Skeleton parser for GLR parsing with Bison],
+            [2002, 2003, 2004, 2005, 2006])[

 
 

-b4_token_defines(b4_tokens)
-
-#if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED)
-m4_ifdef([b4_stype],
-[b4_syncline([b4_stype_line], [b4_filename])
-typedef union m4_bregexp(b4_stype, [^{], [YYSTYPE ])b4_stype YYSTYPE;
-/* Line __line__ of glr.c.  */
-b4_syncline([@oline@], [@ofile@])],
-[typedef int YYSTYPE;])
-# define YYSTYPE_IS_DECLARED 1
-# define YYSTYPE_IS_TRIVIAL 1
-#endif
+/* C GLR parser skeleton written by Paul Hilfinger.  */
+]

 
 

-b4_pure_if([],
-[extern YYSTYPE b4_prefix[]lval;])
+b4_shared_declarations

 
 

-#if ! defined (YYLTYPE) && ! defined (YYLTYPE_IS_DECLARED)
-typedef struct YYLTYPE
-{
-b4_location_if([
-  int first_line;
-  int first_column;
-  int last_line;
-  int last_column;
-],[
-  char yydummy;
-])
-} YYLTYPE;
-# define YYLTYPE_IS_DECLARED 1
-# define YYLTYPE_IS_TRIVIAL 1
-#endif
+extern YYSTYPE b4_prefix[]lval;

 
 b4_location_if([b4_pure_if([],
 [extern YYLTYPE b4_prefix[]lloc;])
 
 b4_location_if([b4_pure_if([],
 [extern YYLTYPE b4_prefix[]lloc;])