struct symbol *clone_tab(struct symbol *tab);
struct symbol *new_tab(void);
struct symbol *tab_add_symbol(struct symbol *tab, char *ident, short type, short check);
-struct symbol *tab_lookup(struct symbol *tab, char *ident);
-struct symbol *tab_remove_symbol(struct symbol *tab, char *ident);
+struct symbol *tab_lookup(struct symbol *tab, char *ident, short type);
+struct symbol *tab_remove_symbol(struct symbol *tab, char *ident, short type);
struct symbol *tab_merge(struct symbol *tab, struct symbol *to_add, short check);
void check_variable(struct symbol *tab, char *ident);
void check_field(struct symbol *tab, char *ident);