bufLen := 32 * 1024
	b1, b2 := make([]byte, bufLen), make([]byte, bufLen)
	for i := 0; true; i++ {
		n1, e1 := io.ReadFull(r1, b1)
		n2, e2 := io.ReadFull(r2, b2)
		if n1 != n2 {
			return false, fmt.Sprintf("Read %d != %d bytes from the readers", n1, n2)
		}
		if !bytes.Equal(b1[:n1], b2[:n2]) {
			return false, fmt.Sprintf("After reading %d equal buffers (32Kib each), we got the following two strings:\n%v\n%v\n",

	var err error
	var n1 int
	decPartSize, _ := sio.DecryptedSize(uint64(d.parts[d.partIndex].Size))
	unreadPartLen := int64(decPartSize) - d.partDecRelOffset
	if int64(len(p)) < unreadPartLen {
		n1, err = d.decrypter.Read(p)
		if err != nil {
			return 0, err
		}
		d.partDecRelOffset += int64(n1)
	} else {
		n1, err = io.ReadFull(d.decrypter, p[:unreadPartLen])
		if err != nil {

Commit generated by update.bash.

For #22487.
"

if [ "$1" = "-commit" ]; then
	echo "Creating commit. Run 'git reset HEAD^' to undo commit."
	echo
	git commit -m "$commitmsg" $files
	echo
	git log -n1 --stat
	echo

		inputData: string(zeroBlock[:]) + padInput("0\n"),
		inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"},
		wantErr:   ErrHeader,
	}, {
		inputData: strings.Repeat("0", blockSize) + padInput("1\n5\n1\n"),
		inputHdrs: map[string]string{paxGNUSparseMajor: "1", paxGNUSparseMinor: "0"},
		wantMap:   sparseDatas{{5, 1}},
	}, {
		inputData: padInput(fmt.Sprintf("%d\n", int64(math.MaxInt64))),

</p>

<p>
Examples:
</p>

<pre>
var a = [...]int{0, 1, 2, 3, 4, 5, 6, 7}
var s = make([]int, 6)
var b = make([]byte, 5)
n1 := copy(s, a[0:])            // n1 == 6, s is []int{0, 1, 2, 3, 4, 5}
n2 := copy(s, s[2:])            // n2 == 4, s is []int{2, 3, 4, 5, 4, 5}
n3 := copy(b, "Hello, World!")  // n3 == 5, b is []byte("Hello")
</pre>