1  /* { dg-do compile } */
       2  /* { dg-options "-Wunused -W" } */
       3  
       4  long
       5  f1 (unsigned long long x)
       6  {
       7    unsigned long long a = 1;
       8    const union { unsigned long long l; unsigned int p[2]; } b = { .l = x };
       9    const union { unsigned long long l; unsigned int p[2]; } c = { .l = a };
      10    return b.p[0] + c.p[0];
      11  }
      12  
      13  int
      14  f2 (int x, int y)
      15  {
      16    int a = 1;
      17    int b[] = { 1, 2, x, a, 3, 4 };
      18    return b[y];
      19  }
      20  
      21  int
      22  f3 (int a,	/* { dg-warning "unused parameter" } */
      23      int b,	/* { dg-warning "set but not used" } */
      24      int c)
      25  {
      26    b = 1;
      27    c = 1;
      28    return c;
      29  }