gcc/testsuite/gcc.c-torture/execute/990827-1.c

void abort (void);
void exit (int);

unsigned test(unsigned one , unsigned  bit)
{
    unsigned val=  bit & 1;
    unsigned zero= one >> 1;

    val++;
    return zero + ( val>> 1 );
}

int main()
{
  if (test (1,0) != 0)
    abort ();
  if (test (1,1) != 1)
    abort ();
  if (test (1,65535) != 1)
    abort ();
  exit (0);

  return 0;
}