return P{E{"foo": x}}
	return P{{"foo": x}, {}}
}

// This is a degenerate case with a singleton type set, but we can create
// composite literals even if the core type is a defined type.
type MyInts []int

func _[P MyInts]() P {
	return P{}

  @Param("1234")
  int randomSeed;

  int[] xInts;
  int[] yInts;

  long[] xLongs;
  long[] yLongs;

  int[] constant;

  private static final long NONNEGATIVE_LONG_MASK = 0x7FFFFFFFFFFFFFFFL;

  @BeforeExperiment
  void setUp() {
    Random random = new Random(randomSeed);
    xInts = new int[SAMPLE_SIZE];
    yInts = new int[SAMPLE_SIZE];
    xLongs = new long[SAMPLE_SIZE];