X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/affac6132ae6ee354e1497e456b5c81a0c84334f..47aee066ccabdb3aeb96735532167c551f8e7194:/src/symlist.c

diff --git a/src/symlist.c b/src/symlist.c
index ed42ce1e..e00814ed 100644
--- a/src/symlist.c
+++ b/src/symlist.c
@@ -1,6 +1,6 @@
 /* Lists of symbols for Bison
 
-   Copyright (C) 2002, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2005, 2006 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -38,6 +38,10 @@ symbol_list_new (symbol *sym, location loc)
   res->sym = sym;
   res->location = loc;
 
+  res->midrule = NULL;
+  res->midrule_parent_rule = NULL;
+  res->midrule_parent_rhs_index = 0;
+
   res->action = NULL;
   res->used = false;
 
@@ -56,11 +60,12 @@ symbol_list_new (symbol *sym, location loc)
 `------------------*/
 
 void
-symbol_list_print (symbol_list *l, FILE *f)
+symbol_list_print (const symbol_list *l, FILE *f)
 {
   for (/* Nothing. */; l && l->sym; l = l->next)
     {
       symbol_print (l->sym, f);
+      fprintf (stderr, l->used ? " used" : " unused");
       if (l && l->sym)
 	fprintf (f, ", ");
     }
@@ -95,11 +100,11 @@ symbol_list_free (symbol_list *list)
 | Return its length.  |
 `--------------------*/
 
-unsigned int
-symbol_list_length (symbol_list *l)
+int
+symbol_list_length (symbol_list const *l)
 {
   int res = 0;
-  for (/* Nothing. */; l; l = l->next)
+  for (/* Nothing. */; l && l->sym; l = l->next)
     ++res;
   return res;
 }