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/* { dg-do compile } */

/* { dg-options "-Wunused -W" } */

long

f1 (unsigned long long x)

{

  unsigned long long a = 1;

  const union { unsigned long long l; unsigned int p[2]; } b = { .l = x };

  const union { unsigned long long l; unsigned int p[2]; } c = { .l = a };

  return b.p[0] + c.p[0];

}

int

f2 (int x, int y)

{

  int a = 1;

  int b[] = { 1, 2, x, a, 3, 4 };

  return b[y];

}

int

f3 (int a,      /* { dg-warning "unused parameter" } */

    int b,      /* { dg-warning "set but not used" } */

    int c)

{

  b = 1;

  c = 1;

  return c;

}