(symbol_get): Don't cast LHS of an assignment;

[bison.git] / src / symtab.c

diff --git a/src/symtab.c b/src/symtab.c
index b3925c33a3eb0119e6b131f02ae5f56d4dfaf7be..7b3131205dc8f44851244b45c90da569e187ae38 100644 (file)
--- a/src/symtab.c
+++ b/src/symtab.c
@@ -32,8 +32,8 @@
 
 symbol_t *errtoken = NULL;
 symbol_t *undeftoken = NULL;
-symbol_t *eoftoken = NULL;
-symbol_t *axiom = NULL;
+symbol_t *endtoken = NULL;
+symbol_t *accept = NULL;
 symbol_t *startsymbol = NULL;
 location_t startsymbol_location;
 
@@ -55,7 +55,7 @@ symbol_new (const char *tag, location_t location)
 
   res->number = NUMBER_UNDEFINED;
   res->prec = 0;
-  res->assoc = right_assoc;
+  res->assoc = undef_assoc;
   res->user_token_number = USER_NUMBER_UNDEFINED;
 
   res->alias = NULL;
@@ -129,7 +129,7 @@ symbol_printer_set (symbol_t *symbol, char *printer, location_t location)
 
 void
 symbol_precedence_set (symbol_t *symbol,
-                      int prec, associativity assoc, location_t location)
+                      int prec, assoc_t assoc, location_t location)
 {
   if (assoc != undef_assoc)
     {
@@ -181,11 +181,11 @@ symbol_user_token_number_set (symbol_t *symbol,
                 symbol->tag);
 
   symbol->user_token_number = user_token_number;
-  /* User defined EOF token? */
+  /* User defined $end token? */
   if (user_token_number == 0)
     {
-      eoftoken = symbol;
-      eoftoken->number = 0;
+      endtoken = symbol;
+      endtoken->number = 0;
       /* It is always mapped to 0, so it was already counted in
         NTOKENS.  */
       --ntokens;
@@ -238,13 +238,13 @@ symbol_check_defined (symbol_t *this)
 `-------------------------------------------------------------------*/
 
 void
-symbol_make_alias (symbol_t *symbol, symbol_t *symval)
+symbol_make_alias (symbol_t *symbol, symbol_t *symval, location_t loc)
 {
   if (symval->alias)
-    warn (_("symbol `%s' used more than once as a literal string"),
+    warn_at (loc, _("symbol `%s' used more than once as a literal string"),
          symval->tag);
   else if (symbol->alias)
-    warn (_("symbol `%s' given more than one literal string"),
+    warn_at (loc, _("symbol `%s' given more than one literal string"),
          symbol->tag);
   else
     {
@@ -277,8 +277,9 @@ symbol_check_alias_consistence (symbol_t *this)
       if (this->prec != this->alias->prec)
        {
          if (this->prec != 0 && this->alias->prec != 0)
-           complain (_("conflicting precedences for %s and %s"),
-                     this->tag, this->alias->tag);
+           complain_at (this->alias->location,
+                        _("conflicting precedences for %s and %s"),
+                        this->tag, this->alias->tag);
          if (this->prec != 0)
            this->alias->prec = this->prec;
          else
@@ -287,14 +288,12 @@ symbol_check_alias_consistence (symbol_t *this)
 
       if (this->assoc != this->alias->assoc)
        {
-         /* FIXME: For some reason (probably the S/R => keep the S),
-            the right assoc is chosen has the ``not set''.  This is
-            not nice, fix this!  */
-         if (this->assoc != right_assoc
-             && this->alias->assoc != right_assoc)
-           complain (_("conflicting associativities for %s and %s"),
-                     this->tag, this->alias->tag);
-         if (this->assoc != 0)
+         if (this->assoc != undef_assoc && this->alias->assoc != undef_assoc)
+           complain_at (this->alias->location,
+                        _("conflicting associativities for %s (%s) and %s (%s)"),
+                        this->tag, assoc_to_string (this->assoc),
+                        this->alias->tag, assoc_to_string (this->alias->assoc));
+         if (this->assoc != undef_assoc)
            this->alias->assoc = this->assoc;
          else
            this->assoc = this->alias->assoc;
@@ -323,7 +322,7 @@ symbol_pack (symbol_t *this)
         prec and assoc fields and make both the same */
       if (this->number == NUMBER_UNDEFINED)
        {
-         if (this == eoftoken || this->alias == eoftoken)
+         if (this == endtoken || this->alias == endtoken)
            this->number = this->alias->number = 0;
          else
            {
@@ -360,9 +359,10 @@ symbol_translation (symbol_t *this)
     {
       /* A token which translation has already been set? */
       if (token_translations[this->user_token_number] != undeftoken->number)
-       complain (_("tokens %s and %s both assigned number %d"),
-                 symbols[token_translations[this->user_token_number]]->tag,
-                 this->tag, this->user_token_number);
+       complain_at (this->location,
+                    _("tokens %s and %s both assigned number %d"),
+                    symbols[token_translations[this->user_token_number]]->tag,
+                    this->tag, this->user_token_number);
 
       token_translations[this->user_token_number] = this->number;
     }
@@ -421,7 +421,7 @@ symbol_get (const char *key, location_t location)
 
   /* Keep the symbol in a printable form.  */
   key = quotearg_style (escape_quoting_style, key);
-  (const char *) probe.tag = key;
+  *(char const **) &probe.tag = key;
   entry = hash_lookup (symbol_table, &probe);
 
   if (!entry)
@@ -464,6 +464,7 @@ void
 symbols_free (void)
 {
   hash_free (symbol_table);
+  free (symbols);
 }
 
 
@@ -539,8 +540,8 @@ symbols_token_translations_init (void)
   token_translations = XCALLOC (symbol_number_t, max_user_token_number + 1);
 
   /* Initialize all entries for literal tokens to 2, the internal
-     token number for $undefined., which represents all invalid
-     inputs.  */
+     token number for $undefined, which represents all invalid inputs.
+     */
   for (i = 0; i < max_user_token_number + 1; i++)
     token_translations[i] = undeftoken->number;
   symbols_do (symbol_translation, NULL);