int[] f(int[] x, int[] y, bool b) {
  if ( b ) {
    return x;
  } else {
    return y;
  }
}

int program (int argc, string[] argv) {
  var x = new int[3]{i -> 0};
  var y = new int[3]{i -> 0};
  f(x, y, true)[0] = 17;
  return x[0];
}