X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a0b76449c7ebb01064f6e091715819f7519c90b2..d2ffe11637313569116e8a9f891785b842ddb1e9:/src/derives.c

diff --git a/src/derives.c b/src/derives.c
index 10d3adbf..7e20fe5a 100644
--- a/src/derives.c
+++ b/src/derives.c
@@ -1,6 +1,6 @@
 /* Match rules with nonterminals for bison,
 
-   Copyright (C) 1984, 1989, 2000, 2001, 2002 Free Software
+   Copyright (C) 1984, 1989, 2000, 2001, 2002, 2003 Free Software
    Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
@@ -50,7 +50,7 @@ print_derives (void)
     {
       rule **rp;
       fprintf (stderr, "\t%s derives\n", symbols[i]->tag);
-      for (rp = derives[i]; *rp; ++rp)
+      for (rp = derives[i - ntokens]; *rp; ++rp)
 	{
 	  fprintf (stderr, "\t\t%3d ", (*rp)->user_number);
 	  rule_rhs_print (*rp, stderr);
@@ -65,38 +65,38 @@ void
 derives_compute (void)
 {
   symbol_number i;
-  int r;
+  rule_number r;
   rule **q;
 
-  /* DSET[NTERM] -- A linked list of the numbers of the rules whose
-     LHS is NTERM.  */
-  rule_list **dset = XCALLOC (rule_list *, nvars) - ntokens;
+  /* DSET[NTERM - NTOKENS] -- A linked list of the numbers of the rules
+     whose LHS is NTERM.  */
+  rule_list **dset = CALLOC (dset, nvars);
 
   /* DELTS[RULE] -- There are NRULES rule number to attach to nterms.
      Instead of performing NRULES allocations for each, have an array
      indexed by rule numbers.  */
-  rule_list *delts = XCALLOC (rule_list, nrules);
+  rule_list *delts = CALLOC (delts, nrules);
 
   for (r = nrules - 1; r >= 0; --r)
     {
       symbol_number lhs = rules[r].lhs->number;
       rule_list *p = &delts[r];
       /* A new LHS is found.  */
-      p->next = dset[lhs];
+      p->next = dset[lhs - ntokens];
       p->value = &rules[r];
-      dset[lhs] = p;
+      dset[lhs - ntokens] = p;
     }
 
   /* DSET contains what we need under the form of a linked list.  Make
      it a single array.  */
 
-  derives = XCALLOC (rule **, nvars) - ntokens;
-  q = XCALLOC (rule *, nvars + int_of_rule_number (nrules));
+  CALLOC (derives, nvars);
+  CALLOC (q, nvars + nrules);
 
   for (i = ntokens; i < nsyms; i++)
     {
-      rule_list *p = dset[i];
-      derives[i] = q;
+      rule_list *p = dset[i - ntokens];
+      derives[i - ntokens] = q;
       while (p)
 	{
 	  *q++ = p->value;
@@ -108,7 +108,7 @@ derives_compute (void)
   if (trace_flag & trace_sets)
     print_derives ();
 
-  free (dset + ntokens);
+  free (dset);
   free (delts);
 }
 
@@ -116,6 +116,6 @@ derives_compute (void)
 void
 derives_free (void)
 {
-  XFREE (derives[ntokens]);
-  XFREE (derives + ntokens);
+  XFREE (derives[0]);
+  XFREE (derives);
 }