1  /* { dg-do compile } */
       2  /* { dg-options "-Wtype-limits" } */
       3  
       4  struct A
       5  {
       6    struct A *p;
       7  };
       8  
       9  int foo(const struct A *q)
      10  {
      11    return q->p == q;
      12  }
      13  
      14  void bar(int);
      15  
      16  void baz()
      17  {
      18    struct A a;
      19  
      20    while (foo(&a))
      21      bar(foo(&a));
      22  }