1  union tree_node;
       2  typedef union tree_node *tree;
       3  struct tree_common
       4  {
       5    tree type;
       6    unsigned lang_flag_0 : 1;
       7  };
       8  union tree_node
       9  {
      10    struct tree_common common;
      11  };
      12  static void
      13  java_check_regular_methods (tree class_decl)
      14  {
      15    int saw_constructor = class_decl->common.type->common.lang_flag_0;
      16    tree class = class_decl->common.type;
      17    for (;;)
      18      {
      19        if (class)
      20          if (class_decl->common.type)
      21            bar (class);
      22      }
      23  }