Clean up GCC warnings.

* src/reader.c (copy_action): `buf' is not used.
(parse_skel_decl): Be static.
* src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
* src/options.h (create_long_option_table): Have a real prototype.
* lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
(hash_delete_at): Return const void *.
Adjust casts to preserve the const.

ChangeLog

@@ -1,3 +1,15 @@
+2001-12-10  Akim Demaille  <akim@epita.fr>
+
+	Clean up GCC warnings.
+
+	* src/reader.c (copy_action): `buf' is not used.
+	(parse_skel_decl): Be static.
+	* src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
+	* src/options.h (create_long_option_table): Have a real prototype.
+	* lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
+	(hash_delete_at): Return const void *.
+	Adjust casts to preserve the const.
+
 2001-12-10  Akim Demaille  <akim@epita.fr>
 
 	* configure.in: Require 2.52g.

lib/hash.c

@@ -1,5 +1,5 @@
 /* hash.c -- hash table maintenance
-   Copyright (C) 1995 Free Software Foundation, Inc.
+   Copyright 1995, 2001  Free Software Foundation, Inc.
    Written by Greg McGary <gkm@gnu.ai.mit.edu>
 
    This program is free software; you can redistribute it and/or modify
@@ -120,17 +120,17 @@ hash_find_item (struct hash_table* ht, void const *key)
   return ((HASH_VACANT (*slot)) ? 0 : *slot);
 }
 
-void *
+const void *
 hash_insert (struct hash_table* ht, void *item)
 {
   void **slot = hash_find_slot (ht, item);
   return hash_insert_at (ht, item, slot);
 }
 
-void *
+const void *
 hash_insert_at (struct hash_table* ht, void *item, void const *slot)
 {
-  void *old_item = *(void **) slot;
+  const void *old_item = *(const void **) slot;
   if (HASH_VACANT (old_item))
     {
       ht->ht_fill++;
@@ -142,17 +142,17 @@ hash_insert_at (struct hash_table* ht, void *item, void const *slot)
   return old_item;
 }
 
-void *
+const void *
 hash_delete (struct hash_table* ht, void const *item)
 {
   void **slot = hash_find_slot (ht, item);
   return hash_delete_at (ht, slot);
 }
 
-void *
+const void *
 hash_delete_at (struct hash_table* ht, void const *slot)
 {
-  void *item = *(void **) slot;
+  const void *item = *(const void **) slot;
   if (!HASH_VACANT (item))
     {
       *(void const **) slot = hash_deleted_item;

lib/hash.h

@@ -1,5 +1,5 @@
 /* hash.h -- decls for hash table
-   Copyright (C) 1995 Free Software Foundation, Inc.
+   Copyright 1995, 2001  Free Software Foundation, Inc.
    Written by Greg McGary <gkm@gnu.ai.mit.edu>
 
    This program is free software; you can redistribute it and/or modify
@@ -47,10 +47,10 @@ void hash_load __P((struct hash_table *ht, void *item_table,
 		    unsigned long cardinality, unsigned long size));
 void **hash_find_slot __P((struct hash_table *ht, void const *key));
 void *hash_find_item __P((struct hash_table *ht, void const *key));
-void *hash_insert __P((struct hash_table *ht, void *item));
+const void *hash_insert __P((struct hash_table *ht, void *item));
-void *hash_insert_at __P((struct hash_table *ht, void *item, void const *slot));
+const void *hash_insert_at __P((struct hash_table *ht, void *item, void const *slot));
-void *hash_delete __P((struct hash_table *ht, void const *item));
+const void *hash_delete __P((struct hash_table *ht, void const *item));
-void *hash_delete_at __P((struct hash_table *ht, void const *slot));
+const void *hash_delete_at __P((struct hash_table *ht, void const *slot));
 void hash_delete_items __P((struct hash_table *ht));
 void hash_free_items __P((struct hash_table *ht));
 void hash_free __P((struct hash_table *ht, int free_items));
@@ -59,7 +59,8 @@ void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
 void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
 
 extern void *hash_deleted_item;
-#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
+#define HASH_VACANT(item) \
+   ((item) == 0 || (const void *) (item) == hash_deleted_item)
 
 
 /* hash and comparison macros for string keys. */

src/muscle_tab.c

@@ -1,5 +1,5 @@
 /* Macro table manager for Bison,
-   Copyright 1984, 1989, 2000 Free Software Foundation, Inc.
+   Copyright 2001 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -32,19 +32,20 @@ struct hash_table muscle_table;
 static unsigned long
 mhash1 (const void *item)
 {
-  return_STRING_HASH_1 (((muscle_entry_t *) item)->key);
+  return_STRING_HASH_1 (((const muscle_entry_t *) item)->key);
 }
 
 static unsigned long
 mhash2 (const void *item)
 {
-  return_STRING_HASH_2 (((muscle_entry_t *) item)->key);
+  return_STRING_HASH_2 (((const muscle_entry_t *) item)->key);
 }
 
 static int
 mcmp (const void *x, const void *y)
 {
-  return strcmp (((muscle_entry_t*) x)->key, ((muscle_entry_t *) y)->key);
+  return strcmp (((const muscle_entry_t*) x)->key,
+		 ((const muscle_entry_t *) y)->key);
 }
 
 void
@@ -105,7 +106,7 @@ muscle_init (void)
   muscle_insert ("name", "Parser");
 }
 
-void 
+void
 muscle_insert (const char *key, const char *value)
 {
   muscle_entry_t *pair = XMALLOC (muscle_entry_t, 1);

src/options.h

@@ -57,6 +57,6 @@ extern struct option *longopts;
 extern const struct option_table_struct option_table[];
 
 /* Set the longopts variable from option_table.  */
-void create_long_option_table PARAMS (());
+void create_long_option_table PARAMS ((void));
 
 #endif /* !OPTIONS_H_ */

src/reader.c

@@ -966,7 +966,7 @@ parse_muscle_decl (void)
 
 
 /*---------------------------------.
-| Parse a double quoted parameter. |       
+| Parse a double quoted parameter. |
 `---------------------------------*/
 
 static const char *
@@ -994,7 +994,7 @@ parse_dquoted_param (const char *from)
       else
 	break;
     }
-  
+
   obstack_1grow (&param_obstack, '\0');
   param = obstack_finish (&param_obstack);
 
@@ -1014,7 +1014,7 @@ parse_dquoted_param (const char *from)
 | Parse what comes after %skeleton. |
 `----------------------------------*/
 
-void
+static void
 parse_skel_decl (void)
 {
   skeleton = parse_dquoted_param ("%skeleton");
@@ -1133,7 +1133,6 @@ copy_action (symbol_list *rule, int stack_offset)
 {
   int c;
   int count;
-  char buf[4096];
 
   /* offset is always 0 if parser has already popped the stack pointer */
   if (semantic_parser)