lalr1.cc: check (and fix) %initial-action exception safety

[bison.git] / src / print.c

diff --git a/src/print.c b/src/print.c
index c531b04c52c83d3537ff8e8b80be004805bfc019..cb227aa513081fec25d1665b423dd02f1bc63bc6 100644 (file)
--- a/src/print.c
+++ b/src/print.c
@@ -1,43 +1,44 @@
 /* Print information on generated parser, for bison,
 /* Print information on generated parser, for bison,

-   Copyright (C) 1984, 1986, 1989, 2000, 2001, 2002
-   Free Software Foundation, Inc.
+
+   Copyright (C) 1984, 1986, 1989, 2000-2005, 2007, 2009-2012 Free
+   Software Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    This file is part of Bison, the GNU Compiler Compiler.
 

-   Bison is free software; you can redistribute it and/or modify
+   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
    it under the terms of the GNU General Public License as published by

-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.

 
 

-   Bison is distributed in the hope that it will be useful,
+   This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License

-   along with Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
-
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 

+#include <config.h>

 #include "system.h"
 #include "system.h"

-#include "quotearg.h"
-#include "files.h"
-#include "symtab.h"
-#include "gram.h"
+
+#include <bitset.h>
+

 #include "LR0.h"
 #include "LR0.h"

-#include "lalr.h"
+#include "closure.h"

 #include "conflicts.h"
 #include "conflicts.h"

+#include "files.h"

 #include "getargs.h"
 #include "getargs.h"

-#include "state.h"
-#include "reader.h"
+#include "gram.h"
+#include "lalr.h"
+#include "muscle-tab.h"

 #include "print.h"
 #include "print.h"

+#include "reader.h"

 #include "reduce.h"
 #include "reduce.h"

-#include "closure.h"
-#include "bitset.h"
+#include "state.h"
+#include "symtab.h"
+#include "tables.h"

 
 

-static bitset shiftset;
-static bitset lookaheadset;
+static bitset no_reduce_set;

 
 #if 0
 static void
 
 #if 0
 static void


@@ -66,19 +67,19 @@ max_length (size_t *width, const char *str)
 `--------------------------------*/
 
 static void
 `--------------------------------*/
 
 static void

-print_core (FILE *out, state_t *state)
+print_core (FILE *out, state *s)

 {
 {

-  int i;
-  item_number_t *sitems = state->items;
-  int snritems   = state->nitems;
-  symbol_t *previous_lhs = NULL;
+  size_t i;
+  item_number *sitems = s->items;
+  size_t snritems = s->nitems;
+  symbol *previous_lhs = NULL;

 
   /* Output all the items of a state, not only its kernel.  */
   if (report_flag & report_itemsets)
     {
       closure (sitems, snritems);
       sitems = itemset;
 
   /* Output all the items of a state, not only its kernel.  */
   if (report_flag & report_itemsets)
     {
       closure (sitems, snritems);
       sitems = itemset;

-      snritems = nritemset;
+      snritems = nitemset;

     }
 
   if (!snritems)
     }
 
   if (!snritems)


@@ -88,54 +89,55 @@ print_core (FILE *out, state_t *state)
 
   for (i = 0; i < snritems; i++)
     {
 
   for (i = 0; i < snritems; i++)
     {

-      item_number_t *sp;
-      item_number_t *sp1;
-      int rule;
+      item_number *sp;
+      item_number *sp1;
+      rule_number r;

 
       sp1 = sp = ritem + sitems[i];
 
       while (*sp >= 0)
        sp++;
 
 
       sp1 = sp = ritem + sitems[i];
 
       while (*sp >= 0)
        sp++;
 

-      rule = -(*sp);
+      r = item_number_as_rule_number (*sp);

 
 

-      rule_lhs_print (&rules[rule], previous_lhs, out);
-      previous_lhs = rules[rule].lhs;
+      rule_lhs_print (&rules[r], previous_lhs, out);
+      previous_lhs = rules[r].lhs;

 
 

-      for (sp = rules[rule].rhs; sp < sp1; sp++)
-       fprintf (out, " %s", symbol_tag_get (symbols[*sp]));
+      for (sp = rules[r].rhs; sp < sp1; sp++)
+       fprintf (out, " %s", symbols[*sp]->tag);

       fputs (" .", out);
       for (/* Nothing */; *sp >= 0; ++sp)
       fputs (" .", out);
       for (/* Nothing */; *sp >= 0; ++sp)

-       fprintf (out, " %s", symbol_tag_get (symbols[*sp]));
+       fprintf (out, " %s", symbols[*sp]->tag);

 
 

-      /* Display the lookaheads?  */
-      if (report_flag & report_lookaheads)
-       state_rule_lookaheads_print (state, &rules[rule], out);
+      /* Display the lookahead tokens?  */
+      if (report_flag & report_lookahead_tokens
+          && item_number_is_rule_number (*sp1))
+       state_rule_lookahead_tokens_print (s, &rules[r], out);

 
       fputc ('\n', out);
     }
 }
 
 
 
       fputc ('\n', out);
     }
 }
 
 

-/*----------------------------------------------------------------.
-| Report the shifts iff DISPLAY_SHIFTS_P or the gotos of STATE on |
-| OUT.                                                            |
-`----------------------------------------------------------------*/
+/*------------------------------------------------------------.
+| Report the shifts iff DISPLAY_SHIFTS_P or the gotos of S on |
+| OUT.                                                        |
+`------------------------------------------------------------*/

 
 static void
 
 static void

-print_transitions (state_t *state, FILE *out, bool display_transitions_p)
+print_transitions (state *s, FILE *out, bool display_transitions_p)

 {
 {

-  transitions_t *transitions = state->shifts;
+  transitions *trans = s->transitions;

   size_t width = 0;
   int i;
 
   size_t width = 0;
   int i;
 

-  /* Compute the width of the lookaheads column.  */
-  for (i = 0; i < transitions->num; i++)
-    if (!TRANSITION_IS_DISABLED (transitions, i)
-       && TRANSITION_IS_SHIFT (transitions, i) == display_transitions_p)
+  /* Compute the width of the lookahead token column.  */
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i)
+       && TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)

       {
       {

-       symbol_t *symbol = symbols[TRANSITION_SYMBOL (transitions, i)];
-       max_length (&width, symbol_tag_get (symbol));
+       symbol *sym = symbols[TRANSITION_SYMBOL (trans, i)];
+       max_length (&width, sym->tag);

       }
 
   /* Nothing to report. */
       }
 
   /* Nothing to report. */


@@ -145,42 +147,42 @@ print_transitions (state_t *state, FILE *out, bool display_transitions_p)
   fputc ('\n', out);
   width += 2;
 
   fputc ('\n', out);
   width += 2;
 

-  /* Report lookaheads and shifts.  */
-  for (i = 0; i < transitions->num; i++)
-    if (!TRANSITION_IS_DISABLED (transitions, i)
-       && TRANSITION_IS_SHIFT (transitions, i) == display_transitions_p)
+  /* Report lookahead tokens and shifts.  */
+  for (i = 0; i < trans->num; i++)
+    if (!TRANSITION_IS_DISABLED (trans, i)
+       && TRANSITION_IS_SHIFT (trans, i) == display_transitions_p)

       {
       {

-       symbol_t *symbol = symbols[TRANSITION_SYMBOL (transitions, i)];
-       const char *tag = symbol_tag_get (symbol);
-       state_number_t state1 = transitions->states[i];
+       symbol *sym = symbols[TRANSITION_SYMBOL (trans, i)];
+       const char *tag = sym->tag;
+       state *s1 = trans->states[i];

        int j;
 
        fprintf (out, "    %s", tag);
        for (j = width - strlen (tag); j > 0; --j)
          fputc (' ', out);
        if (display_transitions_p)
        int j;
 
        fprintf (out, "    %s", tag);
        for (j = width - strlen (tag); j > 0; --j)
          fputc (' ', out);
        if (display_transitions_p)

-         fprintf (out, _("shift, and go to state %d\n"), state1);
+         fprintf (out, _("shift, and go to state %d\n"), s1->number);

        else
        else

-         fprintf (out, _("go to state %d\n"), state1);
+         fprintf (out, _("go to state %d\n"), s1->number);

       }
 }
 
 
       }
 }
 
 

-/*------------------------------------------------------------.
-| Report the explicit errors of STATE raised from %nonassoc.  |
-`------------------------------------------------------------*/
+/*--------------------------------------------------------.
+| Report the explicit errors of S raised from %nonassoc.  |
+`--------------------------------------------------------*/

 
 static void
 
 static void

-print_errs (FILE *out, state_t *state)
+print_errs (FILE *out, state *s)

 {
 {

-  errs_t *errp = state->errs;
+  errs *errp = s->errs;

   size_t width = 0;
   int i;
 
   size_t width = 0;
   int i;
 

-  /* Compute the width of the lookaheads column.  */
-  for (i = 0; i < errp->nerrs; ++i)
-    if (errp->errs[i])
-      max_length (&width, symbol_tag_get (symbols[errp->errs[i]]));
+  /* Compute the width of the lookahead token column.  */
+  for (i = 0; i < errp->num; ++i)
+    if (errp->symbols[i])
+      max_length (&width, errp->symbols[i]->tag);

 
   /* Nothing to report. */
   if (!width)
 
   /* Nothing to report. */
   if (!width)


@@ -189,11 +191,11 @@ print_errs (FILE *out, state_t *state)
   fputc ('\n', out);
   width += 2;
 
   fputc ('\n', out);
   width += 2;
 

-  /* Report lookaheads and errors.  */
-  for (i = 0; i < errp->nerrs; ++i)
-    if (errp->errs[i])
+  /* Report lookahead tokens and errors.  */
+  for (i = 0; i < errp->num; ++i)
+    if (errp->symbols[i])

       {
       {

-       const char *tag = symbol_tag_get (symbols[errp->errs[i]]);
+       const char *tag = errp->symbols[i]->tag;

        int j;
        fprintf (out, "    %s", tag);
        for (j = width - strlen (tag); j > 0; --j)
        int j;
        fprintf (out, "    %s", tag);
        for (j = width - strlen (tag); j > 0; --j)


@@ -203,143 +205,84 @@ print_errs (FILE *out, state_t *state)
 }
 
 
 }
 
 

-/*----------------------------------------------------------.
-| Return the default rule of this STATE if it has one, NULL |
-| otherwise.                                                |
-`----------------------------------------------------------*/
-
-static rule_t *
-state_default_rule (state_t *state)
-{
-  reductions_t *redp = state->reductions;
-  rule_t *default_rule = NULL;
-  int cmax = 0;
-  int i;
-
-  /* No need for a lookahead.  */
-  if (state->consistent)
-    return &rules[redp->rules[0]];
-
-  /* 1. Each reduction is possibly masked by the lookaheads on which
-     we shift (S/R conflicts)...  */
-  bitset_zero (shiftset);
-  {
-    transitions_t *transitions = state->shifts;
-    for (i = 0; i < transitions->num && TRANSITION_IS_SHIFT (transitions, i); i++)
-      if (!TRANSITION_IS_DISABLED (transitions, i))
-       {
-         /* If this state has a shift for the error token, don't use a
-            default rule.  */
-         if (TRANSITION_IS_ERROR (transitions, i))
-           return NULL;
-         bitset_set (shiftset, TRANSITION_SYMBOL (transitions, i));
-       }
-  }
-
-  /* 2. Each reduction is possibly masked by the lookaheads on which
-     we raise an error (due to %nonassoc).  */
-  {
-    errs_t *errp = state->errs;
-    for (i = 0; i < errp->nerrs; i++)
-      if (errp->errs[i])
-       bitset_set (shiftset, errp->errs[i]);
-  }
-
-  for (i = 0; i < state->nlookaheads; ++i)
-    {
-      int count = 0;
-
-      /* How many non-masked lookaheads are there for this reduction?
-        */
-      bitset_andn (lookaheadset, state->lookaheads[i], shiftset);
-      count = bitset_count (lookaheadset);
-
-      if (count > cmax)
-       {
-         cmax = count;
-         default_rule = state->lookaheads_rule[i];
-       }
-
-      /* 3. And finally, each reduction is possibly masked by previous
-        reductions (in R/R conflicts, we keep the first reductions).
-        */
-      bitset_or (shiftset, shiftset, state->lookaheads[i]);
-    }
-
-  return default_rule;
-}
-
-
-/*--------------------------------------------------------------------.
-| Report a reduction of RULE on LOOKAHEADS (which can be `default').  |
-| If not ENABLED, the rule is masked by a shift or a reduce (S/R and  |
-| R/R conflicts).                                                     |
-`--------------------------------------------------------------------*/
+/*-------------------------------------------------------------------------.
+| Report a reduction of RULE on LOOKAHEAD_TOKEN (which can be `default').  |
+| If not ENABLED, the rule is masked by a shift or a reduce (S/R and       |
+| R/R conflicts).                                                          |
+`-------------------------------------------------------------------------*/

 
 static void
 print_reduction (FILE *out, size_t width,
 
 static void
 print_reduction (FILE *out, size_t width,

-                const char *lookahead,
-                rule_t *rule, bool enabled)
+                const char *lookahead_token,
+                rule *r, bool enabled)

 {
   int j;
 {
   int j;

-  fprintf (out, "    %s", lookahead);
-  for (j = width - strlen (lookahead); j > 0; --j)
+  fprintf (out, "    %s", lookahead_token);
+  for (j = width - strlen (lookahead_token); j > 0; --j)

     fputc (' ', out);
   if (!enabled)
     fputc ('[', out);
     fputc (' ', out);
   if (!enabled)
     fputc ('[', out);

-  fprintf (out, _("reduce using rule %d (%s)"),
-          rule->number - 1, symbol_tag_get (rule->lhs));
+  if (r->number)
+    fprintf (out, _("reduce using rule %d (%s)"), r->number, r->lhs->tag);
+  else
+    fprintf (out, _("accept"));

   if (!enabled)
     fputc (']', out);
   fputc ('\n', out);
 }
 
 
   if (!enabled)
     fputc (']', out);
   fputc ('\n', out);
 }
 
 

-/*----------------------------------------------------.
-| Report on OUT the reduction actions of this STATE.  |
-`----------------------------------------------------*/
+/*-------------------------------------------.
+| Report on OUT the reduction actions of S.  |
+`-------------------------------------------*/

 
 static void
 
 static void

-print_reductions (FILE *out, state_t *state)
+print_reductions (FILE *out, state *s)

 {
 {

-  transitions_t *transitions = state->shifts;
-  reductions_t *redp = state->reductions;
-  rule_t *default_rule = NULL;
+  transitions *trans = s->transitions;
+  reductions *reds = s->reductions;
+  rule *default_reduction = NULL;

   size_t width = 0;
   int i, j;
   size_t width = 0;
   int i, j;

+  bool default_reduction_only = true;

 
 

-  if (redp->nreds == 0)
+  if (reds->num == 0)

     return;
 
     return;
 

-  default_rule = state_default_rule (state);
+  if (yydefact[s->number] != 0)
+    default_reduction = &rules[yydefact[s->number] - 1];

 
 

-  bitset_zero (shiftset);
-  for (i = 0; i < transitions->num && TRANSITION_IS_SHIFT (transitions, i); i++)
-    if (!TRANSITION_IS_DISABLED (transitions, i))
-      bitset_set (shiftset, TRANSITION_SYMBOL (transitions, i));
+  bitset_zero (no_reduce_set);
+  FOR_EACH_SHIFT (trans, i)
+    bitset_set (no_reduce_set, TRANSITION_SYMBOL (trans, i));
+  for (i = 0; i < s->errs->num; ++i)
+    if (s->errs->symbols[i])
+      bitset_set (no_reduce_set, s->errs->symbols[i]->number);

 
 

-  /* Compute the width of the lookaheads column.  */
-  if (default_rule)
+  /* Compute the width of the lookahead token column.  */
+  if (default_reduction)

     width = strlen (_("$default"));
     width = strlen (_("$default"));

-  for (i = 0; i < ntokens; i++)
-    {
-      int count = bitset_test (shiftset, i);

 
 

-      for (j = 0; j < state->nlookaheads; ++j)
-       if (bitset_test (state->lookaheads[j], i))
-         {
-           if (count == 0)
-             {
-               if (state->lookaheads_rule[j] != default_rule)
-                 max_length (&width, symbol_tag_get (symbols[i]));
-               count++;
-             }
-           else
-             {
-               max_length (&width, symbol_tag_get (symbols[i]));
-             }
-         }
-    }
+  if (reds->lookahead_tokens)
+    for (i = 0; i < ntokens; i++)
+      {
+       bool count = bitset_test (no_reduce_set, i);
+
+       for (j = 0; j < reds->num; ++j)
+         if (bitset_test (reds->lookahead_tokens[j], i))
+           {
+             if (! count)
+               {
+                 if (reds->rules[j] != default_reduction)
+                   max_length (&width, symbols[i]->tag);
+                 count = true;
+               }
+             else
+               {
+                 max_length (&width, symbols[i]->tag);
+               }
+           }
+      }

 
   /* Nothing to report. */
   if (!width)
 
   /* Nothing to report. */
   if (!width)


@@ -348,90 +291,94 @@ print_reductions (FILE *out, state_t *state)
   fputc ('\n', out);
   width += 2;
 
   fputc ('\n', out);
   width += 2;
 

-  /* Report lookaheads (or $default) and reductions.  */
-  for (i = 0; i < ntokens; i++)
-    {
-      int defaulted = 0;
-      int count = bitset_test (shiftset, i);
+  /* Report lookahead tokens (or $default) and reductions.  */
+  if (reds->lookahead_tokens)
+    for (i = 0; i < ntokens; i++)
+      {
+       bool defaulted = false;
+       bool count = bitset_test (no_reduce_set, i);
+        if (count)
+          default_reduction_only = false;

 
 

-      for (j = 0; j < state->nlookaheads; ++j)
-       if (bitset_test (state->lookaheads[j], i))
-         {
-           if (count == 0)
-             {
-               if (state->lookaheads_rule[j] != default_rule)
-                 print_reduction (out, width,
-                                  symbol_tag_get (symbols[i]),
-                                  state->lookaheads_rule[j], TRUE);
-               else
-                 defaulted = 1;
-               count++;
-             }
-           else
-             {
-               if (defaulted)
+       for (j = 0; j < reds->num; ++j)
+         if (bitset_test (reds->lookahead_tokens[j], i))
+           {
+             if (! count)
+               {
+                 if (reds->rules[j] != default_reduction)
+                    {
+                      default_reduction_only = false;
+                      print_reduction (out, width,
+                                       symbols[i]->tag,
+                                       reds->rules[j], true);
+                    }
+                 else
+                   defaulted = true;
+                 count = true;
+               }
+             else
+               {
+                  default_reduction_only = false;
+                 if (defaulted)
+                   print_reduction (out, width,
+                                    symbols[i]->tag,
+                                    default_reduction, true);
+                 defaulted = false;

                  print_reduction (out, width,
                  print_reduction (out, width,

-                                  symbol_tag_get (symbols[i]),
-                                  default_rule, TRUE);
-               defaulted = 0;
-               print_reduction (out, width,
-                                symbol_tag_get (symbols[i]),
-                                state->lookaheads_rule[j], FALSE);
-             }
-         }
-    }
+                                  symbols[i]->tag,
+                                  reds->rules[j], false);
+               }
+           }
+      }

 
 

-  if (default_rule)
-    print_reduction (out, width,
-                    _("$default"), default_rule, TRUE);
+  if (default_reduction)
+    {
+      char *default_reductions =
+        muscle_percent_define_get ("lr.default-reductions");
+      print_reduction (out, width, _("$default"), default_reduction, true);
+      aver (0 == strcmp (default_reductions, "most")
+            || (0 == strcmp (default_reductions, "consistent")
+                && default_reduction_only)
+            || (reds->num == 1 && reds->rules[0]->number == 0));
+      free (default_reductions);
+    }

 }
 
 
 /*--------------------------------------------------------------.
 | Report on OUT all the actions (shifts, gotos, reductions, and |
 }
 
 
 /*--------------------------------------------------------------.
 | Report on OUT all the actions (shifts, gotos, reductions, and |

-| explicit erros from %nonassoc) of STATE.                      |
+| explicit erros from %nonassoc) of S.                          |

 `--------------------------------------------------------------*/
 
 static void
 `--------------------------------------------------------------*/
 
 static void

-print_actions (FILE *out, state_t *state)
+print_actions (FILE *out, state *s)

 {
 {

-  reductions_t *redp = state->reductions;
-  transitions_t *transitions = state->shifts;
-
-  if (transitions->num == 0 && redp->nreds == 0)
-    {
-      fputc ('\n', out);
-      if (state->number == final_state->number)
-       fprintf (out, _("    $default\taccept\n"));
-      else
-       fprintf (out, _("    NO ACTIONS\n"));
-      return;
-    }
-

   /* Print shifts.  */
   /* Print shifts.  */

-  print_transitions (state, out, TRUE);
-  print_errs (out, state);
-  print_reductions (out, state);
+  print_transitions (s, out, true);
+  print_errs (out, s);
+  print_reductions (out, s);

   /* Print gotos.  */
   /* Print gotos.  */

-  print_transitions (state, out, FALSE);
+  print_transitions (s, out, false);

 }
 
 
 }
 
 

-/*--------------------------------------.
-| Report all the data on STATE on OUT.  |
-`--------------------------------------*/
+/*----------------------------------.
+| Report all the data on S on OUT.  |
+`----------------------------------*/

 
 static void
 
 static void

-print_state (FILE *out, state_t *state)
+print_state (FILE *out, state *s)

 {
   fputs ("\n\n", out);
 {
   fputs ("\n\n", out);

-  fprintf (out, _("state %d"), state->number);
+  fprintf (out, _("state %d"), s->number);

   fputc ('\n', out);
   fputc ('\n', out);

-  print_core (out, state);
-  print_actions (out, state);
-  if ((report_flag & report_solved_conflicts)
-      && state->solved_conflicts)
-    fputs (state->solved_conflicts, out);
+  print_core (out, s);
+  print_actions (out, s);
+  if ((report_flag & report_solved_conflicts) && s->solved_conflicts)
+    {
+      fputc ('\n', out);
+      fputs (s->solved_conflicts, out);
+    }

 }
 \f
 /*-----------------------------------------.
 }
 \f
 /*-----------------------------------------.


@@ -452,7 +399,7 @@ do {                                                \
 static void
 print_grammar (FILE *out)
 {
 static void
 print_grammar (FILE *out)
 {

-  symbol_number_t i;
+  symbol_number i;

   char buffer[90];
   int column = 0;
 
   char buffer[90];
   int column = 0;
 


@@ -463,22 +410,22 @@ print_grammar (FILE *out)
   for (i = 0; i < max_user_token_number + 1; i++)
     if (token_translations[i] != undeftoken->number)
       {
   for (i = 0; i < max_user_token_number + 1; i++)
     if (token_translations[i] != undeftoken->number)
       {

-       const char *tag = symbol_tag_get (symbols[token_translations[i]]);
-       rule_number_t r;
-       item_number_t *rhsp;
+       const char *tag = symbols[token_translations[i]]->tag;
+       rule_number r;
+       item_number *rhsp;

 
        buffer[0] = 0;
        column = strlen (tag);
        fputs (tag, out);
 
        buffer[0] = 0;
        column = strlen (tag);
        fputs (tag, out);

-       END_TEST (50);
+       END_TEST (65);

        sprintf (buffer, " (%d)", i);
 
        sprintf (buffer, " (%d)", i);
 

-       for (r = 1; r < nrules + 1; r++)
+       for (r = 0; r < nrules; r++)

          for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
            if (item_number_as_symbol_number (*rhsp) == token_translations[i])
              {
                END_TEST (65);
          for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
            if (item_number_as_symbol_number (*rhsp) == token_translations[i])
              {
                END_TEST (65);

-               sprintf (buffer + strlen (buffer), " %d", r - 1);
+               sprintf (buffer + strlen (buffer), " %d", r);

                break;
              }
        fprintf (out, "%s\n", buffer);
                break;
              }
        fprintf (out, "%s\n", buffer);


@@ -490,12 +437,12 @@ print_grammar (FILE *out)
   for (i = ntokens; i < nsyms; i++)
     {
       int left_count = 0, right_count = 0;
   for (i = ntokens; i < nsyms; i++)
     {
       int left_count = 0, right_count = 0;

-      rule_number_t r;
-      const char *tag = symbol_tag_get (symbols[i]);
+      rule_number r;
+      const char *tag = symbols[i]->tag;

 
 

-      for (r = 1; r < nrules + 1; r++)
+      for (r = 0; r < nrules; r++)

        {
        {

-         item_number_t *rhsp;
+         item_number *rhsp;

          if (rules[r].lhs->number == i)
            left_count++;
          for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
          if (rules[r].lhs->number == i)
            left_count++;
          for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)


@@ -514,14 +461,16 @@ print_grammar (FILE *out)
 
       if (left_count > 0)
        {
 
       if (left_count > 0)
        {

-         END_TEST (50);
+         END_TEST (65);

          sprintf (buffer + strlen (buffer), _(" on left:"));
 
          sprintf (buffer + strlen (buffer), _(" on left:"));
 

-         for (r = 1; r < nrules + 1; r++)
+         for (r = 0; r < nrules; r++)

            {
            {

-             END_TEST (65);

              if (rules[r].lhs->number == i)
              if (rules[r].lhs->number == i)

-               sprintf (buffer + strlen (buffer), " %d", r - 1);
+               {
+                 END_TEST (65);
+                 sprintf (buffer + strlen (buffer), " %d", r);
+               }

            }
        }
 
            }
        }
 


@@ -529,16 +478,16 @@ print_grammar (FILE *out)
        {
          if (left_count > 0)
            sprintf (buffer + strlen (buffer), ",");
        {
          if (left_count > 0)
            sprintf (buffer + strlen (buffer), ",");

-         END_TEST (50);
+         END_TEST (65);

          sprintf (buffer + strlen (buffer), _(" on right:"));
          sprintf (buffer + strlen (buffer), _(" on right:"));

-         for (r = 1; r < nrules + 1; r++)
+         for (r = 0; r < nrules; r++)

            {
            {

-             item_number_t *rhsp;
+             item_number *rhsp;

              for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
                if (item_number_as_symbol_number (*rhsp) == i)
                  {
                    END_TEST (65);
              for (rhsp = rules[r].rhs; *rhsp >= 0; rhsp++)
                if (item_number_as_symbol_number (*rhsp) == i)
                  {
                    END_TEST (65);

-                   sprintf (buffer + strlen (buffer), " %d", r - 1);
+                   sprintf (buffer + strlen (buffer), " %d", r);

                    break;
                  }
            }
                    break;
                  }
            }


@@ -550,13 +499,16 @@ print_grammar (FILE *out)
 void
 print_results (void)
 {
 void
 print_results (void)
 {

-  state_number_t i;
+  state_number i;

 
   /* We used to use just .out if SPEC_NAME_PREFIX (-p) was used, but
      that conflicts with Posix.  */
   FILE *out = xfopen (spec_verbose_file, "w");
 
   reduce_output (out);
 
   /* We used to use just .out if SPEC_NAME_PREFIX (-p) was used, but
      that conflicts with Posix.  */
   FILE *out = xfopen (spec_verbose_file, "w");
 
   reduce_output (out);

+  grammar_rules_partial_print (out,
+                              _("Rules useless in parser due to conflicts"),
+                                 rule_useless_in_parser_p);

   conflicts_output (out);
 
   print_grammar (out);
   conflicts_output (out);
 
   print_grammar (out);


@@ -566,12 +518,10 @@ print_results (void)
   if (report_flag & report_itemsets)
     new_closure (nritems);
   /* Storage for print_reductions.  */
   if (report_flag & report_itemsets)
     new_closure (nritems);
   /* Storage for print_reductions.  */

-  shiftset =  bitset_create (ntokens, BITSET_FIXED);
-  lookaheadset = bitset_create (ntokens, BITSET_FIXED);
+  no_reduce_set =  bitset_create (ntokens, BITSET_FIXED);

   for (i = 0; i < nstates; i++)
     print_state (out, states[i]);
   for (i = 0; i < nstates; i++)
     print_state (out, states[i]);

-  bitset_free (shiftset);
-  bitset_free (lookaheadset);
+  bitset_free (no_reduce_set);

   if (report_flag & report_itemsets)
     free_closure ();
 
   if (report_flag & report_itemsets)
     free_closure ();