var buf1 bytes.Buffer
	_, err := Fprint(&buf1, ast1, LineForm)
	if err != nil {
		panic(err)
	}
	bytes1 := buf1.Bytes()

	ast2, err := Parse(NewFileBase(filename), &buf1, nil, nil, 0)
	if err != nil {
		panic(err)
	}

	var buf2 bytes.Buffer
	_, err = Fprint(&buf2, ast2, LineForm)
	if err != nil {
		panic(err)
	}
	bytes2 := buf2.Bytes()

	return (*int)(v.UnsafePointer())
}

func bytes1(x []byte) byte { // ERROR "x does not escape"
	v := reflect.ValueOf(x) // ERROR "x does not escape"
	return v.Bytes()[0]
}

// Unfortunate: should only escape content. x (the interface storage) should not escape.
func bytes2(x []byte) []byte { // ERROR "leaking param: x$"
	v := reflect.ValueOf(x) // ERROR "x escapes to heap"
	return v.Bytes()
}

// javadoc?
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class Bytes {
  private Bytes() {}

  /**
   * Returns a hash code for {@code value}; equal to the result of invoking {@code ((Byte)
   * value).hashCode()}.
   *
   * <p><b>Java 8+ users:</b> use {@link Byte#hashCode(byte)} instead.
   *
   * @param value a primitive {@code byte} value
   * @return a hash code for the value
   */

// javadoc?
@GwtCompatible
@ElementTypesAreNonnullByDefault
public final class Bytes {
  private Bytes() {}

  /**
   * Returns a hash code for {@code value}; equal to the result of invoking {@code ((Byte)
   * value).hashCode()}.
   *
   * <p><b>Java 8+ users:</b> use {@link Byte#hashCode(byte)} instead.
   *
   * @param value a primitive {@code byte} value
   * @return a hash code for the value
   */

    byte[] encode(Closure<Encoder> closure) {
        def bytes = new ByteArrayOutputStream()
        encodeTo(bytes, closure)
        return bytes.toByteArray()
    }

    byte[] truncate(Closure<Encoder> closure) {
        def bytes = new ByteArrayOutputStream()
        encodeTo(bytes, closure)
        def result = bytes.toByteArray()
        if (result.length < 2) {

    // These will have the same first 4 bytes (all 0).
    byte[] bytesA = new byte[5];
    byte[] bytesB = new byte[5];

    // Change only the last (5th) byte
    bytesA[4] = (byte) 0xbe;
    bytesB[4] = (byte) 0xef;

    HashCode hashCodeA = HashCode.fromBytes(bytesA);
    HashCode hashCodeB = HashCode.fromBytes(bytesB);

    // They aren't equal...

func findAncestor(a, b netip.Prefix) netip.Prefix {
	bytesA := a.Addr().AsSlice()
	bytesB := b.Addr().AsSlice()
	bytes := make([]byte, len(bytesA))

	max := a.Bits()
	if l := b.Bits(); l < max {
		max = l
	}

	mask := 0
	for i := range bytesA {
		xor := bytesA[i] ^ bytesB[i]
		if xor == 0 {
			bytes[i] = bytesA[i]
			mask += 8

		} else {
			pos := bits.LeadingZeros8(xor)

    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-bar")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")
    bytesIn.writeByte(0x40) // Literal indexed
    bytesIn.writeByte(0x0a) // Literal name (len = 10)
    bytesIn.writeUtf8("custom-baz")
    bytesIn.writeByte(0x0d) // Literal value (len = 13)
    bytesIn.writeUtf8("custom-header")

		addASN1IntBytes(b, r)
		addASN1IntBytes(b, s)
	})
	return b.Bytes()
}

// addASN1IntBytes encodes in ASN.1 a positive integer represented as
// a big-endian byte slice with zero or more leading zeroes.
func addASN1IntBytes(b *cryptobyte.Builder, bytes []byte) {
	for len(bytes) > 0 && bytes[0] == 0 {
		bytes = bytes[1:]
	}
	if len(bytes) == 0 {
		b.SetError(errors.New("invalid integer"))
		return
	}

// BytesX returns the encoding of the x-coordinate of p, as specified in SEC 1,
// Version 2.0, Section 2.3.5, or an error if p is the point at infinity.
func (p *P224Point) BytesX() ([]byte, error) {
	// This function is outlined to make the allocations inline in the caller
	// rather than happen on the heap.
	var out [p224ElementLength]byte
	return p.bytesX(&out)
}

func (p *P224Point) bytesX(out *[p224ElementLength]byte) ([]byte, error) {