new smatch

*** 29,58 ****
  {
          int arg;
  
          if (!option_info)
                  return;
!         if (__in_fake_assign || __in_fake_parameter_assign || __in_function_def)
                  return;
  
          arg = get_param_num_from_sym(sym);
!         if (arg >= 0)
                  set_state_stree(&used_stree, my_id, name, sym, &used);
  }
  
  static void set_param_used(struct expression *call, struct expression *arg, char *key, char *unused)
  {
          struct symbol *sym;
          char *name;
          int arg_nr;
  
          name = get_variable_from_key(arg, key, &sym);
          if (!name || !sym)
                  goto free;
  
          arg_nr = get_param_num_from_sym(sym);
!         if (arg_nr >= 0)
                  set_state_stree(&used_stree, my_id, name, sym, &used);
  free:
          free_string(name);
  }
  
--- 29,68 ----
  {
          int arg;
  
          if (!option_info)
                  return;
! 
!         if (__in_fake_assign || __in_fake_parameter_assign || __in_function_def || __in_unmatched_hook)
                  return;
  
          arg = get_param_num_from_sym(sym);
!         if (arg < 0)
!                 return;
!         if (param_was_set_var_sym(name, sym))
!                 return;
          set_state_stree(&used_stree, my_id, name, sym, &used);
  }
  
  static void set_param_used(struct expression *call, struct expression *arg, char *key, char *unused)
  {
          struct symbol *sym;
          char *name;
          int arg_nr;
  
+         if (!option_info)
+                 return;
+ 
          name = get_variable_from_key(arg, key, &sym);
          if (!name || !sym)
                  goto free;
  
          arg_nr = get_param_num_from_sym(sym);
!         if (arg_nr < 0)
!                 goto free;
!         if (param_was_set_var_sym(name, sym))
!                 goto free;
          set_state_stree(&used_stree, my_id, name, sym, &used);
  free:
          free_string(name);
  }