* doc/bison.texinfo (Stack Overflow): xref to Recursion.

[bison.git] / src / parse-gram.c

diff --git a/src/parse-gram.c b/src/parse-gram.c
index ed1685b88a24fe9afefdbe55aadecd9ecec141e0..3db6ae54d4923feae743194889b807ae6fbc3dab 100644 (file)
--- a/src/parse-gram.c
+++ b/src/parse-gram.c
@@ -1,9 +1,7 @@
-/* A Bison parser, made from parse-gram.y
-   by GNU bison 1.49b.  */
+/* A Bison parser, made from parse-gram.y, by GNU bison 1.49c.  */

 
 

-/* Skeleton output parser for Bison,
-   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 Free Software
-   Foundation, Inc.
+/* Skeleton parser for Yacc-like parsing with Bison,
+   Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002 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


@@ -25,10 +23,8 @@
    This special exception was added by the Free Software Foundation
    in version 1.24 of Bison.  */
 
    This special exception was added by the Free Software Foundation
    in version 1.24 of Bison.  */
 

-/* This is the parser code that is written into each bison parser when
-   the %semantic_parser declaration is not specified in the grammar.
-   It was written by Richard Stallman by simplifying the original so
-   called ``semantic'' parser.  */
+/* Written by Richard Stallman by simplifying the original so called
+   ``semantic'' parser.  */

 
 /* All symbols defined below should begin with yy or YY, to avoid
    infringing on user name space.  This should be done even for local
 
 /* All symbols defined below should begin with yy or YY, to avoid
    infringing on user name space.  This should be done even for local


@@ -61,6 +57,7 @@
 #line 31 "parse-gram.y"
 
 #include "system.h"
 #line 31 "parse-gram.y"
 
 #include "system.h"

+#include "complain.h"

 #include "muscle_tab.h"
 #include "files.h"
 #include "getargs.h"
 #include "muscle_tab.h"
 #include "files.h"
 #include "getargs.h"


@@ -94,11 +91,11 @@ do {                                                        \
    correctly typed access to it.  */
 #define yycontrol ((gram_control_t *) gram_control)
 
    correctly typed access to it.  */
 #define yycontrol ((gram_control_t *) gram_control)
 

-/* Request detailed parse error messages, and pass them to
-   GRAM_ERROR. */
+/* Request detailed parse error messages, and pass them to GRAM_ERROR.
+   FIXME: depends on the undocumented availability of YYLLOC.t */

 #undef  yyerror
 #define yyerror(Msg) \
 #undef  yyerror
 #define yyerror(Msg) \

-        gram_error (yycontrol, &yylloc, Msg)
+        gram_error (&yylloc, Msg)

 
 #define YYPRINT(File, Type, Value) \
         yyprint (File, Type, &Value)
 
 #define YYPRINT(File, Type, Value) \
         yyprint (File, Type, &Value)


@@ -108,7 +105,7 @@ symbol_class current_class = unknown_sym;
 char *current_type = 0;
 symbol_t *current_lhs;
 location_t current_lhs_location;
 char *current_type = 0;
 symbol_t *current_lhs;
 location_t current_lhs_location;

-associativity current_assoc;
+assoc_t current_assoc;

 int current_prec = 0;
 braced_code_t current_braced_code = action_braced_code;
 
 int current_prec = 0;
 braced_code_t current_braced_code = action_braced_code;
 


@@ -228,16 +225,16 @@ braced_code_t current_braced_code = action_braced_code;
 #endif
 
 #ifndef YYSTYPE
 #endif
 
 #ifndef YYSTYPE

-#line 88 "parse-gram.y"
+#line 89 "parse-gram.y"

 typedef union {
   symbol_t *symbol;
   symbol_list_t *list;
   int integer;
   char *string;
 typedef union {
   symbol_t *symbol;
   symbol_list_t *list;
   int integer;
   char *string;

-  associativity assoc;
+  assoc_t assoc;

 } yystype;
 } yystype;

-/* Line 272 of /home/cs/hilfingr/work/grammars/glr2/install/share/bison/yacc.c.  */
-#line 241 "parse-gram.c"
+/* Line 188 of /usr/local/share/bison/yacc.c.  */
+#line 238 "parse-gram.c"

 # define YYSTYPE yystype
 # define YYSTYPE_IS_TRIVIAL 1
 #endif
 # define YYSTYPE yystype
 # define YYSTYPE_IS_TRIVIAL 1
 #endif


@@ -257,8 +254,8 @@ typedef struct yyltype
 /* Copy the second part of user declarations.  */
 
 
 /* Copy the second part of user declarations.  */
 
 

-/* Line 292 of /home/cs/hilfingr/work/grammars/glr2/install/share/bison/yacc.c.  */
-#line 262 "parse-gram.c"
+/* Line 208 of /usr/local/share/bison/yacc.c.  */
+#line 259 "parse-gram.c"

 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 
 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
 


@@ -351,17 +348,16 @@ union yyalloc
 
 /* YYFINAL -- State number of the termination state. */
 #define YYFINAL  3
 
 /* YYFINAL -- State number of the termination state. */
 #define YYFINAL  3

-#define YYFLAG  -32768
-#define YYLAST   125
+#define YYLAST   127

 
 /* YYNTOKENS -- Number of terminals. */
 #define YYNTOKENS  45
 /* YYNNTS -- Number of nonterminals. */
 #define YYNNTS  28
 /* YYNRULES -- Number of rules. */
 
 /* YYNTOKENS -- Number of terminals. */
 #define YYNTOKENS  45
 /* YYNNTS -- Number of nonterminals. */
 #define YYNNTS  28
 /* YYNRULES -- Number of rules. */

-#define YYNRULES  74
+#define YYNRULES  75

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

-#define YYNSTATES  106
+#define YYNSTATES  108

 
 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
 #define YYUNDEFTOK  2
 
 /* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX.  */
 #define YYUNDEFTOK  2


@@ -415,9 +411,9 @@ static const unsigned char yyprhs[] =
       53,    55,    57,    59,    61,    63,    66,    69,    70,    75,
       76,    81,    82,    86,    87,    91,    95,    99,   101,   103,
      105,   106,   108,   110,   113,   115,   117,   120,   123,   127,
       53,    55,    57,    59,    61,    63,    66,    69,    70,    75,
       76,    81,    82,    86,    87,    91,    95,    99,   101,   103,
      105,   106,   108,   110,   113,   115,   117,   120,   123,   127,

-     129,   132,   134,   137,   139,   142,   143,   149,   151,   155,
-     156,   159,   162,   166,   170,   174,   176,   178,   180,   182,
-     184,   186,   187,   190,   191
+     129,   132,   134,   137,   139,   142,   145,   146,   152,   154,
+     158,   159,   162,   165,   169,   173,   177,   179,   181,   183,
+     185,   187,   189,   190,   193,   194

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


@@ -437,25 +433,25 @@ static const signed char yyrhs[] =
       58,    67,    -1,    35,    -1,    40,    -1,    40,     5,    -1,
       40,    69,    -1,    40,     5,    69,    -1,    59,    -1,    60,
       59,    -1,    62,    -1,    61,    62,    -1,    63,    -1,    49,
       58,    67,    -1,    35,    -1,    40,    -1,    40,     5,    -1,
       40,    69,    -1,    40,     5,    69,    -1,    59,    -1,    60,
       59,    -1,    62,    -1,    61,    62,    -1,    63,    -1,    49,

-      37,    -1,    -1,    40,    38,    64,    65,    37,    -1,    66,
-      -1,    65,    39,    66,    -1,    -1,    66,    67,    -1,    66,
-      68,    -1,    66,    17,    67,    -1,    66,    18,     5,    -1,
-      66,    19,    35,    -1,    40,    -1,    69,    -1,     4,    -1,
-      44,    -1,     3,    -1,     3,    -1,    -1,    41,    43,    -1,
-      -1,    37,    -1
+      37,    -1,     1,    37,    -1,    -1,    40,    38,    64,    65,
+      37,    -1,    66,    -1,    65,    39,    66,    -1,    -1,    66,
+      67,    -1,    66,    68,    -1,    66,    17,    67,    -1,    66,
+      18,     5,    -1,    66,    19,    35,    -1,    40,    -1,    69,
+      -1,     4,    -1,    44,    -1,     3,    -1,     3,    -1,    -1,
+      41,    43,    -1,    -1,    37,    -1

 };
 
 /* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
 static const unsigned short yyrline[] =
 {
 };
 
 /* YYRLINE[YYN] -- source line where rule number YYN was defined.  */
 static const unsigned short yyrline[] =
 {

-       0,   158,   158,   171,   173,   176,   178,   179,   180,   181,
-     182,   183,   184,   185,   186,   187,   188,   189,   190,   191,
-     192,   193,   194,   197,   199,   200,   204,   211,   210,   221,
-     220,   233,   232,   238,   238,   243,   252,   267,   269,   270,
-     273,   275,   280,   282,   286,   291,   296,   302,   308,   318,
-     321,   330,   332,   338,   340,   344,   343,   348,   350,   353,
-     356,   358,   360,   362,   364,   368,   370,   371,   374,   380,
-     389,   397,   402,   408,   410
+       0,   162,   162,   175,   177,   180,   182,   183,   184,   185,
+     186,   187,   188,   189,   190,   191,   192,   193,   194,   195,
+     196,   197,   198,   201,   203,   204,   208,   215,   214,   225,
+     224,   237,   236,   242,   242,   247,   256,   271,   273,   274,
+     277,   279,   284,   286,   290,   295,   300,   306,   312,   322,
+     325,   334,   336,   342,   344,   349,   356,   355,   360,   362,
+     365,   368,   370,   372,   374,   376,   380,   382,   383,   386,
+     392,   401,   409,   414,   420,   422

 };
 #endif
 
 };
 #endif
 


@@ -464,35 +460,38 @@ static const unsigned short yyrline[] =
    First, the terminals, then, starting at YYNTOKENS, nonterminals. */
 static const char *const yytname[] =
 {
    First, the terminals, then, starting at YYNTOKENS, nonterminals. */
 static const char *const yytname[] =
 {

-  "\"end of string\"", "error", "$undefined.", "STRING", "CHARACTER", "INT", 
-  "\"%token\"", "\"%nterm\"", "\"%type\"", "\"%destructor\"", 
-  "\"%printer\"", "\"%union\"", "\"%left\"", "\"%right\"", 
-  "\"%nonassoc\"", "\"%expect\"", "\"%start\"", "\"%prec\"", "\"%dprec\"", 
-  "\"%merge\"", "\"%verbose\"", "\"%error-verbose\"", "\"%output\"", 
-  "\"%file-prefix\"", "\"%name-prefix\"", "\"%define\"", 
+  "\"end of file\"", "error", "$undefined", "\"string\"", "\"character\"", 
+  "\"integer\"", "\"%token\"", "\"%nterm\"", "\"%type\"", 
+  "\"%destructor\"", "\"%printer\"", "\"%union\"", "\"%left\"", 
+  "\"%right\"", "\"%nonassoc\"", "\"%expect\"", "\"%start\"", "\"%prec\"", 
+  "\"%dprec\"", "\"%merge\"", "\"%verbose\"", "\"%error-verbose\"", 
+  "\"%output\"", "\"%file-prefix\"", "\"%name-prefix\"", "\"%define\"", 

   "\"%pure-parser\"", "\"%glr-parser\"", "\"%defines\"", "\"%yacc\"", 
   "\"%debug\"", "\"%locations\"", "\"%no-lines\"", "\"%skeleton\"", 
   "\"%pure-parser\"", "\"%glr-parser\"", "\"%defines\"", "\"%yacc\"", 
   "\"%debug\"", "\"%locations\"", "\"%no-lines\"", "\"%skeleton\"", 

-  "\"%token-table\"", "TYPE", "\"=\"", "\";\"", "\":\"", "\"|\"", 
-  "\"identifier\"", "\"%%\"", "PROLOGUE", "EPILOGUE", "BRACED_CODE", 
-  "$axiom", "input", "declarations", "declaration", "grammar_declaration", 
-  "@1", "@2", "symbol_declaration", "@3", "@4", "precedence_declaration", 
-  "precedence_declarator", "type.opt", "symbols.1", "symbol_def", 
-  "symbol_defs.1", "grammar", "rules_or_grammar_declaration", "rules", 
-  "@5", "rhses.1", "rhs", "symbol", "action", "string_as_id", 
-  "string_content", "epilogue.opt", "semi_colon.opt", 0
+  "\"%token-table\"", "\"type\"", "\"=\"", "\";\"", "\":\"", "\"|\"", 
+  "\"identifier\"", "\"%%\"", "\"%{...%}\"", "\"epilogue\"", "\"{...}\"", 
+  "$accept", "input", "declarations", "declaration", 
+  "grammar_declaration", "@1", "@2", "symbol_declaration", "@3", "@4", 
+  "precedence_declaration", "precedence_declarator", "type.opt", 
+  "symbols.1", "symbol_def", "symbol_defs.1", "grammar", 
+  "rules_or_grammar_declaration", "rules", "@5", "rhses.1", "rhs", 
+  "symbol", "action", "string_as_id", "string_content", "epilogue.opt", 
+  "semi_colon.opt", 0

 };
 #endif
 
 };
 #endif
 

+# ifdef YYPRINT

 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
    token YYLEX-NUM.  */
 /* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to
    token YYLEX-NUM.  */

-static const short yytoknum[] =
+static const unsigned short yytoknum[] =

 {
        0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
      265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
      275,   276,   277,   278,   279,   280,   281,   282,   283,   284,
      285,   286,   287,   288,   289,   290,   291,   292,   293,   294,
 {
        0,   256,   257,   258,   259,   260,   261,   262,   263,   264,
      265,   266,   267,   268,   269,   270,   271,   272,   273,   274,
      275,   276,   277,   278,   279,   280,   281,   282,   283,   284,
      285,   286,   287,   288,   289,   290,   291,   292,   293,   294,

-     295,   296,   297,   298,   299,    -1
+     295,   296,   297,   298,   299

 };
 };

+# endif

 
 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 static const unsigned char yyr1[] =
 
 /* YYR1[YYN] -- Symbol number of symbol that rule YYN derives.  */
 static const unsigned char yyr1[] =


@@ -502,9 +501,9 @@ static const unsigned char yyr1[] =
       48,    48,    48,    49,    49,    49,    49,    50,    49,    51,
       49,    53,    52,    54,    52,    52,    55,    56,    56,    56,
       57,    57,    58,    58,    59,    59,    59,    59,    59,    60,
       48,    48,    48,    49,    49,    49,    49,    50,    49,    51,
       49,    53,    52,    54,    52,    52,    55,    56,    56,    56,
       57,    57,    58,    58,    59,    59,    59,    59,    59,    60,

-      60,    61,    61,    62,    62,    64,    63,    65,    65,    66,
-      66,    66,    66,    66,    66,    67,    67,    67,    68,    69,
-      70,    71,    71,    72,    72
+      60,    61,    61,    62,    62,    62,    64,    63,    65,    65,
+      66,    66,    66,    66,    66,    66,    67,    67,    67,    68,
+      69,    70,    71,    71,    72,    72

 };
 
 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */
 };
 
 /* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN.  */


@@ -515,97 +514,99 @@ static const unsigned char yyr2[] =
        1,     1,     1,     1,     1,     2,     2,     0,     4,     0,
        4,     0,     3,     0,     3,     3,     3,     1,     1,     1,
        0,     1,     1,     2,     1,     1,     2,     2,     3,     1,
        1,     1,     1,     1,     1,     2,     2,     0,     4,     0,
        4,     0,     3,     0,     3,     3,     3,     1,     1,     1,
        0,     1,     1,     2,     1,     1,     2,     2,     3,     1,

-       2,     1,     2,     1,     2,     0,     5,     1,     3,     0,
-       2,     2,     3,     3,     3,     1,     1,     1,     1,     1,
-       1,     0,     2,     0,     1
+       2,     1,     2,     1,     2,     2,     0,     5,     1,     3,
+       0,     2,     2,     3,     3,     3,     1,     1,     1,     1,
+       1,     1,     0,     2,     0,     1

 };
 
 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
    STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
    means the default is an error.  */
 };
 
 /* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state
    STATE-NUM when YYTABLE doesn't specify something else to do.  Zero
    means the default is an error.  */

-static const short yydefact[] =
+static const unsigned char yydefact[] =

 {
 {

-       3,     0,     0,     0,    33,    31,     0,    27,    29,     0,
+       3,     0,     0,     1,    33,    31,     0,    27,    29,     0,

       37,    38,    39,     0,     0,    21,    10,     0,     0,     0,
        0,    17,    18,     9,    22,     7,    13,    15,     0,    20,
       37,    38,    39,     0,     0,    21,    10,     0,     0,     0,
        0,    17,    18,     9,    22,     7,    13,    15,     0,    20,

-       0,     6,    73,     5,    24,    23,    40,     0,     0,     0,
-       0,     0,    26,    11,    69,    67,    65,    25,    66,     0,
-       0,     0,    70,     0,    19,     0,     0,    71,    51,    53,
-      74,     4,    41,     0,    44,    45,    49,    34,    32,    35,
-      42,     0,     0,    16,    12,    14,     8,    55,    54,     0,
-      52,     2,    36,    46,    47,    50,    43,    28,    30,    59,
-      72,    48,     0,    57,    56,    59,     0,     0,     0,    68,
-      60,    61,    58,    62,    63,    64
+       0,     6,    74,     5,    24,    23,    40,     0,     0,     0,
+       0,     0,    26,    11,    70,    68,    66,    25,    67,     0,
+       0,     0,    71,     0,    19,     0,     0,     0,     0,    51,
+      53,    75,     4,    41,     0,    44,    45,    49,    34,    32,
+      35,    42,     0,     0,    16,    12,    14,     8,    55,    56,
+      54,     0,    52,     2,    36,    46,    47,    50,    43,    28,
+      30,    60,    73,    48,     0,    58,    57,    60,     0,     0,
+       0,    69,    61,    62,    59,    63,    64,    65

 };
 
 };
 

-/* YYPGOTO[NTERM-NUM]. */
-static const short yydefgoto[] =
+/* YYDEFGOTO[NTERM-NUM]. */
+static const signed char yydefgoto[] =

 {
 {

-      -1,     1,     2,    32,    56,    40,    41,    34,    38,    37,
-      35,    36,    63,    69,    66,    67,    57,    58,    59,    89,
-      92,    93,    70,   101,    48,    53,    81,    61
+      -1,     1,     2,    32,    57,    40,    41,    34,    38,    37,
+      35,    36,    64,    70,    67,    68,    58,    59,    60,    91,
+      94,    95,    71,   103,    48,    53,    83,    62

 };
 
 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
    STATE-NUM.  */
 };
 
 /* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
    STATE-NUM.  */

-static const short yypact[] =
+#define YYPACT_NINF -61
+static const signed char yypact[] =

 {
 {

-  -32768,     7,    83,-32768,-32768,-32768,   -23,-32768,-32768,     3,
-  -32768,-32768,-32768,    43,     0,-32768,-32768,    13,    14,    15,
-      51,-32768,-32768,-32768,-32768,-32768,-32768,-32768,    51,-32768,
-      23,-32768,    19,-32768,-32768,-32768,    22,   -29,   -29,     0,
-      17,    18,-32768,-32768,-32768,-32768,-32768,-32768,-32768,    51,
-      51,    51,-32768,    51,-32768,    20,    27,    12,-32768,-32768,
-  -32768,-32768,-32768,     0,-32768,     5,-32768,   -29,   -29,     0,
-  -32768,     0,     0,-32768,-32768,-32768,-32768,-32768,-32768,    28,
-  -32768,-32768,     0,    56,-32768,-32768,-32768,     0,     0,-32768,
-  -32768,-32768,     4,    -2,-32768,-32768,     0,    55,    35,-32768,
-  -32768,-32768,    -2,-32768,-32768,-32768
+     -61,    35,    85,   -61,   -61,   -61,     2,   -61,   -61,    -5,
+     -61,   -61,   -61,    31,     0,   -61,   -61,    18,    21,    22,
+      59,   -61,   -61,   -61,   -61,   -61,   -61,   -61,    59,   -61,
+      37,   -61,    26,   -61,   -61,   -61,    29,   -19,   -19,     0,
+      23,    24,   -61,   -61,   -61,   -61,   -61,   -61,   -61,    59,
+      59,    59,   -61,    59,   -61,    28,    33,    32,     1,   -61,
+     -61,   -61,   -61,   -61,     0,   -61,    17,   -61,   -19,   -19,
+       0,   -61,     0,     0,   -61,   -61,   -61,   -61,   -61,   -61,
+     -61,    30,   -61,   -61,     0,    63,   -61,   -61,   -61,     0,
+       0,   -61,   -61,   -61,    -8,    15,   -61,   -61,     0,    67,
+      39,   -61,   -61,   -61,    15,   -61,   -61,   -61

 };
 
 /* YYPGOTO[NTERM-NUM].  */
 };
 
 /* YYPGOTO[NTERM-NUM].  */

-static const short yypgoto[] =
+static const signed char yypgoto[] =

 {
 {

-  -32768,-32768,-32768,-32768,    70,-32768,-32768,-32768,-32768,-32768,
-  -32768,-32768,-32768,   -58,   -22,    37,-32768,    21,-32768,-32768,
-  -32768,   -19,   -14,-32768,   -56,    16,-32768,-32768
+     -61,   -61,   -61,   -61,    76,   -61,   -61,   -61,   -61,   -61,
+     -61,   -61,   -61,   -12,   -45,    41,   -61,    25,   -61,   -61,
+     -61,   -17,   -14,   -61,   -60,   -23,   -61,   -61

 };
 
 /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
    positive, shift that token.  If negative, reduce the rule which
    number is the opposite.  If zero, do what YYDEFACT says.  */
 };
 
 /* YYTABLE[YYPACT[STATE-NUM]].  What to do in state STATE-NUM.  If
    positive, shift that token.  If negative, reduce the rule which
    number is the opposite.  If zero, do what YYDEFACT says.  */

-static const short yytable[] =
+#define YYTABLE_NINF -62
+static const signed char yytable[] =

 {
 {

-      47,    44,    45,    44,    45,    82,    64,     3,    44,    84,
-      83,    65,    39,    87,    88,    96,    97,    98,     4,     5,
-       6,     7,     8,     9,    10,    11,    12,    91,    14,     4,
-       5,     6,     7,     8,     9,    10,    11,    12,    46,    14,
-      46,    94,    99,    95,    54,    85,    85,    42,    43,    49,
-      50,    51,    55,    79,    52,    86,    60,    62,    77,    44,
-     104,    71,    72,    55,    78,    73,    74,    75,    86,    76,
-     105,    90,    33,    86,    86,    68,   102,     0,    80,   100,
-       0,     0,   103,     0,     0,     0,     0,     0,   100,     4,
-       5,     6,     7,     8,     9,    10,    11,    12,    13,    14,
-       0,     0,     0,    15,    16,    17,    18,    19,    20,    21,
-      22,    23,    24,    25,    26,    27,    28,    29,     0,     0,
-       0,     0,     0,     0,    30,    31
+      47,   -72,    55,    44,    45,    54,    86,     4,     5,     6,
+       7,     8,     9,    10,    11,    12,    65,    14,    44,    45,
+      44,    66,    85,    87,    87,    93,    74,    75,    76,    96,
+      77,    97,    98,    99,   100,     3,    43,    39,    55,    42,
+      46,    56,    81,     4,     5,     6,     7,     8,     9,    10,
+      11,    12,    84,    14,    49,    46,    88,    50,    51,   101,
+      89,    90,    52,    61,    63,    78,    44,    72,    73,    80,
+      88,    79,   106,    92,   107,    88,    88,    56,    33,    69,
+     104,   102,     0,    82,   105,     0,     0,     0,     0,     0,
+     102,     4,     5,     6,     7,     8,     9,    10,    11,    12,
+      13,    14,     0,     0,     0,    15,    16,    17,    18,    19,
+      20,    21,    22,    23,    24,    25,    26,    27,    28,    29,
+       0,     0,     0,     0,     0,     0,    30,    31

 };
 
 };
 

-static const short yycheck[] =
+static const signed char yycheck[] =

 {
 {

-      14,     3,     4,     3,     4,    63,    35,     0,     3,    65,
-       5,    40,    35,    71,    72,    17,    18,    19,     6,     7,
-       8,     9,    10,    11,    12,    13,    14,    83,    16,     6,
-       7,     8,     9,    10,    11,    12,    13,    14,    40,    16,
-      40,    37,    44,    39,    28,    67,    68,    44,     5,    36,
-      36,    36,    40,    41,     3,    69,    37,    35,    38,     3,
-       5,    44,    44,    40,    37,    49,    50,    51,    82,    53,
-      35,    43,     2,    87,    88,    38,    95,    -1,    57,    93,
-      -1,    -1,    96,    -1,    -1,    -1,    -1,    -1,   102,     6,
-       7,     8,     9,    10,    11,    12,    13,    14,    15,    16,
-      -1,    -1,    -1,    20,    21,    22,    23,    24,    25,    26,
-      27,    28,    29,    30,    31,    32,    33,    34,    -1,    -1,
-      -1,    -1,    -1,    -1,    41,    42
+      14,     0,     1,     3,     4,    28,    66,     6,     7,     8,
+       9,    10,    11,    12,    13,    14,    35,    16,     3,     4,
+       3,    40,     5,    68,    69,    85,    49,    50,    51,    37,
+      53,    39,    17,    18,    19,     0,     5,    35,     1,    44,
+      40,    40,    41,     6,     7,     8,     9,    10,    11,    12,
+      13,    14,    64,    16,    36,    40,    70,    36,    36,    44,
+      72,    73,     3,    37,    35,    37,     3,    44,    44,    37,
+      84,    38,     5,    43,    35,    89,    90,    40,     2,    38,
+      97,    95,    -1,    58,    98,    -1,    -1,    -1,    -1,    -1,
+     104,     6,     7,     8,     9,    10,    11,    12,    13,    14,
+      15,    16,    -1,    -1,    -1,    20,    21,    22,    23,    24,
+      25,    26,    27,    28,    29,    30,    31,    32,    33,    34,
+      -1,    -1,    -1,    -1,    -1,    -1,    41,    42

 };
 
 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing
 };
 
 /* YYSTOS[STATE-NUM] -- The (internal number of the) accessing


@@ -617,12 +618,12 @@ static const unsigned char yystos[] =
       25,    26,    27,    28,    29,    30,    31,    32,    33,    34,
       41,    42,    48,    49,    52,    55,    56,    54,    53,    35,
       50,    51,    44,     5,     3,     4,    40,    67,    69,    36,
       25,    26,    27,    28,    29,    30,    31,    32,    33,    34,
       41,    42,    48,    49,    52,    55,    56,    54,    53,    35,
       50,    51,    44,     5,     3,     4,    40,    67,    69,    36,

-      36,    36,     3,    70,    70,    40,    49,    61,    62,    63,
-      37,    72,    35,    57,    35,    40,    59,    60,    60,    58,
-      67,    44,    44,    70,    70,    70,    70,    38,    37,    41,
-      62,    71,    58,     5,    69,    59,    67,    58,    58,    64,
-      43,    69,    65,    66,    37,    39,    17,    18,    19,    44,
-      67,    68,    66,    67,     5,    35
+      36,    36,     3,    70,    70,     1,    40,    49,    61,    62,
+      63,    37,    72,    35,    57,    35,    40,    59,    60,    60,
+      58,    67,    44,    44,    70,    70,    70,    70,    37,    38,
+      37,    41,    62,    71,    58,     5,    69,    59,    67,    58,
+      58,    64,    43,    69,    65,    66,    37,    39,    17,    18,
+      19,    44,    67,    68,    66,    67,     5,    35

 };
 
 #if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)
 };
 
 #if ! defined (YYSIZE_T) && defined (__SIZE_TYPE__)


@@ -800,6 +801,145 @@ yystpcpy (yydest, yysrc)
 
 \f
 
 
 \f
 

+#if YYDEBUG
+/*-----------------------------.
+| Print this symbol on YYOUT.  |
+`-----------------------------*/
+
+static void
+#if defined (__STDC__) || defined (__cplusplus)
+yysymprint (FILE* yyout, int yytype, YYSTYPE yyvalue, YYLTYPE yylocation)
+#else
+yysymprint (yyout, yytype, yyvalue, yylocation)
+    FILE* yyout;
+    int yytype;
+    YYSTYPE yyvalue;
+    YYLTYPE yylocation;
+#endif
+{
+  /* Pacify ``unused variable'' warnings.  */
+  (void) yyvalue;
+  (void) yylocation;
+
+  if (yytype < YYNTOKENS)
+    {
+      YYFPRINTF (yyout, "token %s (", yytname[yytype]);
+# ifdef YYPRINT
+      YYPRINT (yyout, yytoknum[yytype], yyvalue);
+# endif
+    }
+  else
+    YYFPRINTF (yyout, "nterm %s (", yytname[yytype]);
+
+  switch (yytype)
+    {
+      default:
+        break;
+    }
+  YYFPRINTF (yyout, ")");
+}
+#endif /* YYDEBUG. */
+
+
+/*----------------------------------------------------------.
+| yyreport_parse_error -- report a parse error in YYSTATE.  |
+`----------------------------------------------------------*/
+
+static void
+#if defined (__STDC__) || defined (__cplusplus)
+yyreport_parse_error (int yystate, int yychar, YYSTYPE yyvalue, YYLTYPE yylloc)
+#else
+yyreport_parse_error (yystate, yychar, yyvalue, yylloc)
+    int yystate;
+    int yychar;
+    YYSTYPE yyvalue;
+    YYLTYPE yylloc;
+#endif
+{
+#if YYERROR_VERBOSE
+  int yyn = yypact[yystate];
+
+  if (YYPACT_NINF < yyn && yyn < YYLAST)
+    {
+      YYSIZE_T yysize = 0;
+      int yytype = YYTRANSLATE (yychar);
+      char *yymsg;
+      int yyx, yycount;
+
+      yycount = 0;
+      /* Start YYX at -YYN if negative to avoid negative indexes in
+        YYCHECK.  */
+      for (yyx = yyn < 0 ? -yyn : 0;
+          yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
+       if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+         yysize += yystrlen (yytname[yyx]) + 15, yycount++;
+      yysize += yystrlen ("parse error, unexpected ") + 1;
+      yysize += yystrlen (yytname[yytype]);
+      yymsg = (char *) YYSTACK_ALLOC (yysize);
+      if (yymsg != 0)
+       {
+         char *yyp = yystpcpy (yymsg, "parse error, unexpected ");
+         yyp = yystpcpy (yyp, yytname[yytype]);
+
+         if (yycount < 5)
+           {
+             yycount = 0;
+             for (yyx = yyn < 0 ? -yyn : 0;
+                  yyx < (int) (sizeof (yytname) / sizeof (char *));
+                  yyx++)
+               if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR)
+                 {
+                   const char *yyq = ! yycount ? ", expecting " : " or ";
+                   yyp = yystpcpy (yyp, yyq);
+                   yyp = yystpcpy (yyp, yytname[yyx]);
+                   yycount++;
+                 }
+           }
+         yyerror (yymsg);
+         YYSTACK_FREE (yymsg);
+       }
+      else
+       yyerror ("parse error; also virtual memory exhausted");
+    }
+  else
+#endif /* YYERROR_VERBOSE */
+    yyerror ("parse error");
+
+  /* Pacify ``unused variable'' warnings.  */
+  (void) yystate;
+  (void) yychar;
+  (void) yyvalue;
+  (void) yylloc;
+}
+
+
+/*-----------------------------------------------.
+| Release the memory associated to this symbol.  |
+`-----------------------------------------------*/
+
+static void
+#if defined (__STDC__) || defined (__cplusplus)
+yydestruct (int yytype, YYSTYPE yyvalue, YYLTYPE yylocation)
+#else
+yydestruct (yytype, yyvalue, yylocation)
+    int yytype;
+    YYSTYPE yyvalue;
+    YYLTYPE yylocation;
+#endif
+{
+  /* Pacify ``unused variable'' warnings.  */
+  (void) yyvalue;
+  (void) yylocation;
+
+  switch (yytype)
+    {
+      default:
+        break;
+    }
+}
+
+\f
+

 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
    It should actually point to an object.
 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
    It should actually point to an object.


@@ -828,15 +968,6 @@ int yyparse (void);
 # endif
 #endif
 
 # endif
 #endif
 

-#if defined (__STDC__) || defined (__cplusplus)
-static void yydestruct (int yytype,
-                       YYSTYPE yyvalue, YYLTYPE yylocation);
-# if YYDEBUG
-static void yysymprint (FILE* out, int yytype,
-                       YYSTYPE yyvalue, YYLTYPE yylocation);
-# endif
-#endif
-

 
 
 
 
 
 


@@ -1009,7 +1140,7 @@ yybackup:
   /* First try to decide what to do without reference to lookahead token.  */
 
   yyn = yypact[yystate];
   /* First try to decide what to do without reference to lookahead token.  */
 
   yyn = yypact[yystate];

-  if (yyn == YYFLAG)
+  if (yyn == YYPACT_NINF)

     goto yydefault;
 
   /* Not known => get a lookahead token if don't already have one.  */
     goto yydefault;
 
   /* Not known => get a lookahead token if don't already have one.  */


@@ -1044,7 +1175,7 @@ yybackup:
     }
 
   yyn += yychar1;
     }
 
   yyn += yychar1;

-  if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1)
+  if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yychar1)

     goto yydefault;
 
   yyn = yytable[yyn];
     goto yydefault;
 
   yyn = yytable[yyn];


@@ -1058,7 +1189,7 @@ yybackup:
 
   if (yyn < 0)
     {
 
   if (yyn < 0)
     {

-      if (yyn == YYFLAG)
+      if (yyn == YYTABLE_NINF)

        goto yyerrlab;
       yyn = -yyn;
       goto yyreduce;
        goto yyerrlab;
       yyn = -yyn;
       goto yyreduce;


@@ -1109,8 +1240,8 @@ yyreduce:
   /* If YYLEN is nonzero, implement the default value of the action:
      `$$ = $1'.
 
   /* If YYLEN is nonzero, implement the default value of the action:
      `$$ = $1'.
 

-     Otherwise, the following line sets YYVAL to the semantic value of
-     the lookahead token.  This behavior is undocumented and Bison
+     Otherwise, the following line sets YYVAL to garbage.
+     This behavior is undocumented and Bison

      users should not rely upon it.  Assigning to YYVAL
      unconditionally makes the parser a bit smaller, and it avoids a
      GCC warning that YYVAL may be used uninitialized.  */
      users should not rely upon it.  Assigning to YYVAL
      unconditionally makes the parser a bit smaller, and it avoids a
      GCC warning that YYVAL may be used uninitialized.  */


@@ -1138,7 +1269,7 @@ yyreduce:
   switch (yyn)
     {
         case 2:
   switch (yyn)
     {
         case 2:

-#line 160 "parse-gram.y"
+#line 164 "parse-gram.y"

     {
       yycontrol->errcode = 0;
       epilogue_set (yyvsp[0].string, yylsp[0]);
     {
       yycontrol->errcode = 0;
       epilogue_set (yyvsp[0].string, yylsp[0]);


@@ -1146,99 +1277,99 @@ yyreduce:
     break;
 
   case 6:
     break;
 
   case 6:

-#line 178 "parse-gram.y"
+#line 182 "parse-gram.y"

     { prologue_augment (yyvsp[0].string, yylsp[0]); }
     break;
 
   case 7:
     { prologue_augment (yyvsp[0].string, yylsp[0]); }
     break;
 
   case 7:

-#line 179 "parse-gram.y"
+#line 183 "parse-gram.y"

     { debug_flag = 1; }
     break;
 
   case 8:
     { debug_flag = 1; }
     break;
 
   case 8:

-#line 180 "parse-gram.y"
+#line 184 "parse-gram.y"

     { muscle_insert (yyvsp[-1].string, yyvsp[0].string); }
     break;
 
   case 9:
     { muscle_insert (yyvsp[-1].string, yyvsp[0].string); }
     break;
 
   case 9:

-#line 181 "parse-gram.y"
+#line 185 "parse-gram.y"

     { defines_flag = 1; }
     break;
 
   case 10:
     { defines_flag = 1; }
     break;
 
   case 10:

-#line 182 "parse-gram.y"
+#line 186 "parse-gram.y"

     { error_verbose = 1; }
     break;
 
   case 11:
     { error_verbose = 1; }
     break;
 
   case 11:

-#line 183 "parse-gram.y"
+#line 187 "parse-gram.y"

     { expected_conflicts = yyvsp[0].integer; }
     break;
 
   case 12:
     { expected_conflicts = yyvsp[0].integer; }
     break;
 
   case 12:

-#line 184 "parse-gram.y"
+#line 188 "parse-gram.y"

     { spec_file_prefix = yyvsp[0].string; }
     break;
 
   case 13:
     { spec_file_prefix = yyvsp[0].string; }
     break;
 
   case 13:

-#line 185 "parse-gram.y"
+#line 189 "parse-gram.y"

     { locations_flag = 1; }
     break;
 
   case 14:
     { locations_flag = 1; }
     break;
 
   case 14:

-#line 186 "parse-gram.y"
+#line 190 "parse-gram.y"

     { spec_name_prefix = yyvsp[0].string; }
     break;
 
   case 15:
     { spec_name_prefix = yyvsp[0].string; }
     break;
 
   case 15:

-#line 187 "parse-gram.y"
+#line 191 "parse-gram.y"

     { no_lines_flag = 1; }
     break;
 
   case 16:
     { no_lines_flag = 1; }
     break;
 
   case 16:

-#line 188 "parse-gram.y"
+#line 192 "parse-gram.y"

     { spec_outfile = yyvsp[0].string; }
     break;
 
   case 17:
     { spec_outfile = yyvsp[0].string; }
     break;
 
   case 17:

-#line 189 "parse-gram.y"
+#line 193 "parse-gram.y"

     { pure_parser = 1; }
     break;
 
   case 18:
     { pure_parser = 1; }
     break;
 
   case 18:

-#line 190 "parse-gram.y"
+#line 194 "parse-gram.y"

     { glr_parser = 1; }
     break;
 
   case 19:
     { glr_parser = 1; }
     break;
 
   case 19:

-#line 191 "parse-gram.y"
+#line 195 "parse-gram.y"

     { skeleton = yyvsp[0].string; }
     break;
 
   case 20:
     { skeleton = yyvsp[0].string; }
     break;
 
   case 20:

-#line 192 "parse-gram.y"
+#line 196 "parse-gram.y"

     { token_table_flag = 1; }
     break;
 
   case 21:
     { token_table_flag = 1; }
     break;
 
   case 21:

-#line 193 "parse-gram.y"
+#line 197 "parse-gram.y"

     { report_flag = 1; }
     break;
 
   case 22:
     { report_flag = 1; }
     break;
 
   case 22:

-#line 194 "parse-gram.y"
+#line 198 "parse-gram.y"

     { yacc_flag = 1; }
     break;
 
   case 25:
     { yacc_flag = 1; }
     break;
 
   case 25:

-#line 201 "parse-gram.y"
+#line 205 "parse-gram.y"

     {
       grammar_start_symbol_set (yyvsp[0].symbol, yylsp[0]);
     }
     break;
 
   case 26:
     {
       grammar_start_symbol_set (yyvsp[0].symbol, yylsp[0]);
     }
     break;
 
   case 26:

-#line 205 "parse-gram.y"
+#line 209 "parse-gram.y"

     {
       typed = 1;
       MUSCLE_INSERT_INT ("stype_line", yylsp[0].first_line);
     {
       typed = 1;
       MUSCLE_INSERT_INT ("stype_line", yylsp[0].first_line);


@@ -1247,12 +1378,12 @@ yyreduce:
     break;
 
   case 27:
     break;
 
   case 27:

-#line 211 "parse-gram.y"
+#line 215 "parse-gram.y"

     { current_braced_code = destructor_braced_code; }
     break;
 
   case 28:
     { current_braced_code = destructor_braced_code; }
     break;
 
   case 28:

-#line 213 "parse-gram.y"
+#line 217 "parse-gram.y"

     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)
     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)


@@ -1263,12 +1394,12 @@ yyreduce:
     break;
 
   case 29:
     break;
 
   case 29:

-#line 221 "parse-gram.y"
+#line 225 "parse-gram.y"

     { current_braced_code = printer_braced_code; }
     break;
 
   case 30:
     { current_braced_code = printer_braced_code; }
     break;
 
   case 30:

-#line 223 "parse-gram.y"
+#line 227 "parse-gram.y"

     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)
     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)


@@ -1279,12 +1410,12 @@ yyreduce:
     break;
 
   case 31:
     break;
 
   case 31:

-#line 233 "parse-gram.y"
+#line 237 "parse-gram.y"

     { current_class = nterm_sym; }
     break;
 
   case 32:
     { current_class = nterm_sym; }
     break;
 
   case 32:

-#line 234 "parse-gram.y"
+#line 238 "parse-gram.y"

     {
       current_class = unknown_sym;
       current_type = NULL;
     {
       current_class = unknown_sym;
       current_type = NULL;


@@ -1292,12 +1423,12 @@ yyreduce:
     break;
 
   case 33:
     break;
 
   case 33:

-#line 238 "parse-gram.y"
+#line 242 "parse-gram.y"

     { current_class = token_sym; }
     break;
 
   case 34:
     { current_class = token_sym; }
     break;
 
   case 34:

-#line 239 "parse-gram.y"
+#line 243 "parse-gram.y"

     {
       current_class = unknown_sym;
       current_type = NULL;
     {
       current_class = unknown_sym;
       current_type = NULL;


@@ -1305,7 +1436,7 @@ yyreduce:
     break;
 
   case 35:
     break;
 
   case 35:

-#line 244 "parse-gram.y"
+#line 248 "parse-gram.y"

     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)
     {
       symbol_list_t *list;
       for (list = yyvsp[0].list; list; list = list->next)


@@ -1315,7 +1446,7 @@ yyreduce:
     break;
 
   case 36:
     break;
 
   case 36:

-#line 254 "parse-gram.y"
+#line 258 "parse-gram.y"

     {
       symbol_list_t *list;
       ++current_prec;
     {
       symbol_list_t *list;
       ++current_prec;


@@ -1330,49 +1461,49 @@ yyreduce:
     break;
 
   case 37:
     break;
 
   case 37:

-#line 268 "parse-gram.y"
+#line 272 "parse-gram.y"

     { yyval.assoc = left_assoc; }
     break;
 
   case 38:
     { yyval.assoc = left_assoc; }
     break;
 
   case 38:

-#line 269 "parse-gram.y"
+#line 273 "parse-gram.y"

     { yyval.assoc = right_assoc; }
     break;
 
   case 39:
     { yyval.assoc = right_assoc; }
     break;
 
   case 39:

-#line 270 "parse-gram.y"
+#line 274 "parse-gram.y"

     { yyval.assoc = non_assoc; }
     break;
 
   case 40:
     { yyval.assoc = non_assoc; }
     break;
 
   case 40:

-#line 274 "parse-gram.y"
+#line 278 "parse-gram.y"

     { current_type = NULL;}
     break;
 
   case 41:
     { current_type = NULL;}
     break;
 
   case 41:

-#line 275 "parse-gram.y"
+#line 279 "parse-gram.y"

     { current_type = yyvsp[0].string; }
     break;
 
   case 42:
     { current_type = yyvsp[0].string; }
     break;
 
   case 42:

-#line 281 "parse-gram.y"
+#line 285 "parse-gram.y"

     { yyval.list = symbol_list_new (yyvsp[0].symbol, yylsp[0]); }
     break;
 
   case 43:
     { yyval.list = symbol_list_new (yyvsp[0].symbol, yylsp[0]); }
     break;
 
   case 43:

-#line 282 "parse-gram.y"
+#line 286 "parse-gram.y"

     { yyval.list = symbol_list_prepend (yyvsp[-1].list, yyvsp[0].symbol, yylsp[0]); }
     break;
 
   case 44:
     { yyval.list = symbol_list_prepend (yyvsp[-1].list, yyvsp[0].symbol, yylsp[0]); }
     break;
 
   case 44:

-#line 288 "parse-gram.y"
+#line 292 "parse-gram.y"

     {
        current_type = yyvsp[0].string;
      }
     break;
 
   case 45:
     {
        current_type = yyvsp[0].string;
      }
     break;
 
   case 45:

-#line 292 "parse-gram.y"
+#line 296 "parse-gram.y"

     {
        symbol_class_set (yyvsp[0].symbol, current_class, yylsp[0]);
        symbol_type_set (yyvsp[0].symbol, current_type, yylsp[0]);
     {
        symbol_class_set (yyvsp[0].symbol, current_class, yylsp[0]);
        symbol_type_set (yyvsp[0].symbol, current_type, yylsp[0]);


@@ -1380,7 +1511,7 @@ yyreduce:
     break;
 
   case 46:
     break;
 
   case 46:

-#line 297 "parse-gram.y"
+#line 301 "parse-gram.y"

     {
       symbol_class_set (yyvsp[-1].symbol, current_class, yylsp[-1]);
       symbol_type_set (yyvsp[-1].symbol, current_type, yylsp[-1]);
     {
       symbol_class_set (yyvsp[-1].symbol, current_class, yylsp[-1]);
       symbol_type_set (yyvsp[-1].symbol, current_type, yylsp[-1]);


@@ -1389,129 +1520,144 @@ yyreduce:
     break;
 
   case 47:
     break;
 
   case 47:

-#line 303 "parse-gram.y"
+#line 307 "parse-gram.y"

     {
       symbol_class_set (yyvsp[-1].symbol, current_class, yylsp[-1]);
       symbol_type_set (yyvsp[-1].symbol, current_type, yylsp[-1]);
     {
       symbol_class_set (yyvsp[-1].symbol, current_class, yylsp[-1]);
       symbol_type_set (yyvsp[-1].symbol, current_type, yylsp[-1]);

-      symbol_make_alias (yyvsp[-1].symbol, yyvsp[0].symbol);
+      symbol_make_alias (yyvsp[-1].symbol, yyvsp[0].symbol, yyloc);

     }
     break;
 
   case 48:
     }
     break;
 
   case 48:

-#line 309 "parse-gram.y"
+#line 313 "parse-gram.y"

     {
       symbol_class_set (yyvsp[-2].symbol, current_class, yylsp[-2]);
       symbol_type_set (yyvsp[-2].symbol, current_type, yylsp[-2]);
       symbol_user_token_number_set (yyvsp[-2].symbol, yyvsp[-1].integer, yylsp[-1]);
     {
       symbol_class_set (yyvsp[-2].symbol, current_class, yylsp[-2]);
       symbol_type_set (yyvsp[-2].symbol, current_type, yylsp[-2]);
       symbol_user_token_number_set (yyvsp[-2].symbol, yyvsp[-1].integer, yylsp[-1]);

-      symbol_make_alias (yyvsp[-2].symbol, yyvsp[0].symbol);
+      symbol_make_alias (yyvsp[-2].symbol, yyvsp[0].symbol, yyloc);

     }
     break;
 
   case 49:
     }
     break;
 
   case 49:

-#line 320 "parse-gram.y"
+#line 324 "parse-gram.y"

     {;}
     break;
 
   case 50:
     {;}
     break;
 
   case 50:

-#line 322 "parse-gram.y"
+#line 326 "parse-gram.y"

     {;}
     break;
 
     {;}
     break;
 

+  case 54:
+#line 345 "parse-gram.y"
+    {
+      if (yacc_flag)
+       complain_at (yyloc, _("POSIX forbids declarations in the grammar"));
+    }
+    break;
+

   case 55:
   case 55:

-#line 344 "parse-gram.y"
-    { current_lhs = yyvsp[-1].symbol; current_lhs_location = yylsp[-1]; }
+#line 350 "parse-gram.y"
+    {
+      yyerrok;
+    }

     break;
 
   case 56:
     break;
 
   case 56:

-#line 345 "parse-gram.y"
-    {;}
+#line 356 "parse-gram.y"
+    { current_lhs = yyvsp[-1].symbol; current_lhs_location = yylsp[-1]; }

     break;
 
   case 57:
     break;
 
   case 57:

-#line 349 "parse-gram.y"
-    { grammar_rule_end (yylsp[0]); }
+#line 357 "parse-gram.y"
+    {;}

     break;
 
   case 58:
     break;
 
   case 58:

-#line 350 "parse-gram.y"
+#line 361 "parse-gram.y"

     { grammar_rule_end (yylsp[0]); }
     break;
 
   case 59:
     { grammar_rule_end (yylsp[0]); }
     break;
 
   case 59:

-#line 355 "parse-gram.y"
-    { grammar_rule_begin (current_lhs, current_lhs_location); }
+#line 362 "parse-gram.y"
+    { grammar_rule_end (yylsp[0]); }

     break;
 
   case 60:
     break;
 
   case 60:

-#line 357 "parse-gram.y"
-    { grammar_current_rule_symbol_append (yyvsp[0].symbol, yylsp[0]); }
+#line 367 "parse-gram.y"
+    { grammar_rule_begin (current_lhs, current_lhs_location); }

     break;
 
   case 61:
     break;
 
   case 61:

-#line 359 "parse-gram.y"
-    { grammar_current_rule_action_append (yyvsp[0].string, yylsp[0]); }
+#line 369 "parse-gram.y"
+    { grammar_current_rule_symbol_append (yyvsp[0].symbol, yylsp[0]); }

     break;
 
   case 62:
     break;
 
   case 62:

-#line 361 "parse-gram.y"
-    { grammar_current_rule_prec_set (yyvsp[0].symbol, yylsp[0]); }
+#line 371 "parse-gram.y"
+    { grammar_current_rule_action_append (yyvsp[0].string, yylsp[0]); }

     break;
 
   case 63:
     break;
 
   case 63:

-#line 363 "parse-gram.y"
-    { grammar_current_rule_dprec_set (yyvsp[0].integer, yylsp[0]); }
+#line 373 "parse-gram.y"
+    { grammar_current_rule_prec_set (yyvsp[0].symbol, yylsp[0]); }

     break;
 
   case 64:
     break;
 
   case 64:

-#line 365 "parse-gram.y"
-    { grammar_current_rule_merge_set (yyvsp[0].string, yylsp[0]); }
+#line 375 "parse-gram.y"
+    { grammar_current_rule_dprec_set (yyvsp[0].integer, yylsp[0]); }

     break;
 
   case 65:
     break;
 
   case 65:

-#line 369 "parse-gram.y"
-    { yyval.symbol = yyvsp[0].symbol; }
+#line 377 "parse-gram.y"
+    { grammar_current_rule_merge_set (yyvsp[0].string, yylsp[0]); }

     break;
 
   case 66:
     break;
 
   case 66:

-#line 370 "parse-gram.y"
+#line 381 "parse-gram.y"

     { yyval.symbol = yyvsp[0].symbol; }
     break;
 
   case 67:
     { yyval.symbol = yyvsp[0].symbol; }
     break;
 
   case 67:

-#line 371 "parse-gram.y"
-    { yyval.symbol = getsym (yyvsp[0].string, yylsp[0]); }
+#line 382 "parse-gram.y"
+    { yyval.symbol = yyvsp[0].symbol; }

     break;
 
   case 68:
     break;
 
   case 68:

-#line 376 "parse-gram.y"
-    { yyval.string = yyvsp[0].string; }
+#line 383 "parse-gram.y"
+    { yyval.symbol = symbol_get (yyvsp[0].string, yylsp[0]); }

     break;
 
   case 69:
     break;
 
   case 69:

-#line 382 "parse-gram.y"
+#line 388 "parse-gram.y"
+    { yyval.string = yyvsp[0].string; }
+    break;
+
+  case 70:
+#line 394 "parse-gram.y"

     {
     {

-      yyval.symbol = getsym (yyvsp[0].string, yylsp[0]);
+      yyval.symbol = symbol_get (yyvsp[0].string, yylsp[0]);

       symbol_class_set (yyval.symbol, token_sym, yylsp[0]);
     }
     break;
 
       symbol_class_set (yyval.symbol, token_sym, yylsp[0]);
     }
     break;
 

-  case 70:
-#line 391 "parse-gram.y"
+  case 71:
+#line 403 "parse-gram.y"

     {
       yyval.string = yyvsp[0].string + 1;
       yyval.string[strlen (yyval.string) - 1] = '\0';
     }
     break;
 
     {
       yyval.string = yyvsp[0].string + 1;
       yyval.string[strlen (yyval.string) - 1] = '\0';
     }
     break;
 

-  case 71:
-#line 399 "parse-gram.y"
+  case 72:
+#line 411 "parse-gram.y"

     {
       yyval.string = xstrdup ("");
     }
     break;
 
     {
       yyval.string = xstrdup ("");
     }
     break;
 

-  case 72:
-#line 403 "parse-gram.y"
+  case 73:
+#line 415 "parse-gram.y"

     {
       yyval.string = yyvsp[0].string;
     }
     {
       yyval.string = yyvsp[0].string;
     }


@@ -1520,8 +1666,8 @@ yyreduce:
 
     }
 
 
     }
 

-/* Line 1040 of /home/cs/hilfingr/work/grammars/glr2/install/share/bison/yacc.c.  */
-#line 1525 "parse-gram.c"
+/* Line 1081 of /usr/local/share/bison/yacc.c.  */
+#line 1671 "parse-gram.c"

 \f
   yyvsp -= yylen;
   yyssp -= yylen;
 \f
   yyvsp -= yylen;
   yyssp -= yylen;


@@ -1548,7 +1694,7 @@ yyreduce:
   yyn = yyr1[yyn];
 
   yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;
   yyn = yyr1[yyn];
 
   yystate = yypgoto[yyn - YYNTOKENS] + *yyssp;

-  if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp)
+  if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp)

     yystate = yytable[yystate];
   else
     yystate = yydefgoto[yyn - YYNTOKENS];
     yystate = yytable[yystate];
   else
     yystate = yydefgoto[yyn - YYNTOKENS];


@@ -1564,54 +1710,7 @@ yyerrlab:
   if (!yyerrstatus)
     {
       ++yynerrs;
   if (!yyerrstatus)
     {
       ++yynerrs;

-
-#if YYERROR_VERBOSE
-      yyn = yypact[yystate];
-
-      if (yyn > YYFLAG && yyn < YYLAST)
-       {
-         YYSIZE_T yysize = 0;
-         char *yymsg;
-         int yyx, yycount;
-
-         yycount = 0;
-         /* Start YYX at -YYN if negative to avoid negative indexes in
-            YYCHECK.  */
-         for (yyx = yyn < 0 ? -yyn : 0;
-              yyx < (int) (sizeof (yytname) / sizeof (char *)); yyx++)
-           if (yycheck[yyx + yyn] == yyx)
-             yysize += yystrlen (yytname[yyx]) + 15, yycount++;
-         yysize += yystrlen ("parse error, unexpected ") + 1;
-         yysize += yystrlen (yytname[YYTRANSLATE (yychar)]);
-         yymsg = (char *) YYSTACK_ALLOC (yysize);
-         if (yymsg != 0)
-           {
-             char *yyp = yystpcpy (yymsg, "parse error, unexpected ");
-             yyp = yystpcpy (yyp, yytname[YYTRANSLATE (yychar)]);
-
-             if (yycount < 5)
-               {
-                 yycount = 0;
-                 for (yyx = yyn < 0 ? -yyn : 0;
-                      yyx < (int) (sizeof (yytname) / sizeof (char *));
-                      yyx++)
-                   if (yycheck[yyx + yyn] == yyx)
-                     {
-                       const char *yyq = ! yycount ? ", expecting " : " or ";
-                       yyp = yystpcpy (yyp, yyq);
-                       yyp = yystpcpy (yyp, yytname[yyx]);
-                       yycount++;
-                     }
-               }
-             yyerror (yymsg);
-             YYSTACK_FREE (yymsg);
-           }
-         else
-           yyerror ("parse error; also virtual memory exhausted");
-        }
-      else
-#endif /* YYERROR_VERBOSE */
-        yyerror ("parse error");
+      yyreport_parse_error (yystate, yychar, yylval, yylloc);

     }
   goto yyerrlab1;
 
     }
   goto yyerrlab1;
 


@@ -1658,7 +1757,7 @@ yyerrlab1:
   for (;;)
     {
       yyn = yypact[yystate];
   for (;;)
     {
       yyn = yypact[yystate];

-      if (yyn != YYFLAG)
+      if (yyn != YYPACT_NINF)

        {
          yyn += YYTERROR;
          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)
        {
          yyn += YYTERROR;
          if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR)


@@ -1740,51 +1839,7 @@ yyreturn:
 }
 
 
 }
 
 

-/*-----------------------------------------------.
-| Release the memory associated to this symbol.  |
-`-----------------------------------------------*/
-
-static void
-yydestruct (int yytype,
-           YYSTYPE yyvalue, YYLTYPE yylocation)
-{
-  switch (yytype)
-    {
-      default:
-        break;
-    }
-}
-
-
-#if YYDEBUG
-/*-----------------------------.
-| Print this symbol on YYOUT.  |
-`-----------------------------*/
-
-static void
-yysymprint (FILE* yyout, int yytype,
-           YYSTYPE yyvalue, YYLTYPE yylocation)
-{
-  if (yytype < YYNTOKENS)
-    {
-      YYFPRINTF (yyout, "token %s (", yytname[yytype]);
-# ifdef YYPRINT
-      YYPRINT (yyout, yytoknum[yytype], yyvalue);
-# endif
-    }
-  else
-    YYFPRINTF (yyout, "nterm %s (", yytname[yytype]);
-
-  switch (yytype)
-    {
-      default:
-        break;
-    }
-  YYFPRINTF (yyout, ")");
-}
-#endif /* YYDEBUG. */
-
-#line 412 "parse-gram.y"
+#line 424 "parse-gram.y"

 
 /*------------------------------------------------------------------.
 | When debugging the parser, display tokens' locations and values.  |
 
 /*------------------------------------------------------------------.
 | When debugging the parser, display tokens' locations and values.  |


@@ -1826,10 +1881,8 @@ yyprint (FILE *file,
 }
 
 void
 }
 
 void

-gram_error (gram_control_t *control ATTRIBUTE_UNUSED,
-           location_t *yylloc, const char *msg)
+gram_error (location_t *yylloc, const char *msg)

 {
 {

-  LOCATION_PRINT (stderr, *yylloc);
-  fprintf (stderr, ": %s\n", msg);
+  complain_at (*yylloc, "%s", msg);

 }
 
 }