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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 = { x };

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

{

  return 0;

}

int

f4 (int a)      // { dg-warning "set but not used" }

{

  a = 1;

  return 0;

}

int

f5 (int a)

{

  a = 1;

  return a;

}

int

f6 (int &a)

{

  return a;

}

void

f7 (int &a)

{

  a = 1;

}

struct S

{

  S (int i) : j(i) {}

  S (long i) : j(i + 1) {}

  int j;

};