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extern long foo (long, long, long (*) (long, long));
extern long use (long (*) (long, long), long, long);
 
int
main (void)
{
#ifndef NO_TRAMPOLINES
  long sum = 0;
  long i;
 
  long nested_0 (long a, long b)
    {
      if (a > 2 * b)
        return a - b;
      else
        return b - a;
    }
 
  long nested_1 (long a, long b)
    {
      return use (nested_0, b, a) + sum;
    }
 
  long nested_2 (long a, long b)
    {
      return nested_1 (b, a);
    }
 
  for (i = 0; i < 10; ++i)
    {
      long j;
 
      for (j = 0; j < 10; ++j)
        {
          long k;
 
          for (k = 0; k < 10; ++k)
            sum += foo (i, j > k ? j - k : k - j, nested_2);
        }
    }
 
  if ((sum & 0xffffffff) != 0xbecfcbf5)
    abort ();
#endif
 
  exit (0);
}
 
long
use (long (* func)(long, long), long a, long b)
{
  return func (b, a);
}
 
long
foo (long a, long b, long (* func) (long, long))
{
  return func (a, b);
}