1  /* { dg-do compile } */
       2  /* { dg-options "-O2" } */
       3  
       4  struct A { int a; };
       5  extern void *y;
       6  
       7  __attribute__((optimize (0))) void
       8  foo (void *p, struct A x)
       9  {
      10    foo (y, x);
      11  }