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static int ref(void)

{

  union {

    char c[5];

    int i;

  } u;

  __builtin_memset (&u, 0, sizeof(u));

  u.c[0] = 1;

  u.c[1] = 2;

  u.c[2] = 3;

  u.c[3] = 4;

  return u.i;

}

#define MAX(a,b)  (a < b ? b : a)

static int test(void)

{

  char c[MAX(5, sizeof(int))] __attribute__((aligned)) = { 1, 2, 3, 4 };

  return *(int *)c;

}

int main()

{

  int a = test();

  int b = ref();

  if (a != b)

    abort ();

  return 0;

}