1  /* PR middle-end/29272 */
       2  
       3  extern void abort (void);
       4  
       5  struct S { struct S *s; } s;
       6  struct T { struct T *t; } t;
       7  
       8  static inline void
       9  foo (void *s)
      10  {
      11    struct T *p = s;
      12    __builtin_memcpy (&p->t, &t.t, sizeof (t.t));
      13  }
      14  
      15  void *
      16  __attribute__((noinline))
      17  bar (void *p, struct S *q)
      18  {
      19    q->s = &s;
      20    foo (p);
      21    return q->s;
      22  }
      23  
      24  int
      25  main (void)
      26  {
      27    t.t = &t;
      28    if (bar (&s, &s) != (void *) &t)
      29      abort ();
      30    return 0;
      31  }