byte_value       = octal_byte_value | hex_byte_value .
octal_byte_value = `\` octal_digit octal_digit octal_digit .
hex_byte_value   = `\` "x" hex_digit hex_digit .
little_u_value   = `\` "u" hex_digit hex_digit hex_digit hex_digit .
big_u_value      = `\` "U" hex_digit hex_digit hex_digit hex_digit
                           hex_digit hex_digit hex_digit hex_digit .

//			log.Fatal(err)
//		}
//		return buf.Bytes()
//	}
//
// The 4 GB of zeros compresses to 4 MB, which compresses to 20 kB,
// which compresses to 1252 bytes (in the hex dump below).
//
// It's here in hex for the same reason as rZipBytes above: to avoid
// problems with on-disk virus scanners or other zip processors.
func biggestZipBytes() []byte {
	s := `

	MOVW $1234567, R5               // 6405001260a5d687 or 0600001238a0d687
	// Hex constant 0x80000001
	MOVW $2147483649, R5            // 6405800060a50001 or 0600800038a00001
	MOVD $2147483649, R5            // 6405800060a50001 or 0600800038a00001
	// Hex constant 0xFFFFFFFF80000001
	MOVD $-2147483647, R5           // 3ca0800060a50001 or 0603800038a00001
	// Hex constant 0xFFFFFFFE00000002 (load of constant on < power10, pli on >= power10

			// no comment
		case 2:
			// might be printed form or hex
			note := strings.TrimSpace(parts[1])
			if isHexes(note) {
				hexes = note
			} else {
				printed = note
			}
		case 3:
			// printed form, then hex
			printed = strings.TrimSpace(parts[1])
			hexes = strings.TrimSpace(parts[2])
			if !isHexes(hexes) {
				t.Errorf("%s:%d: malformed hex instruction encoding: %s", input, lineno, line)
			}
		}

byte_value       = octal_byte_value | hex_byte_value .
octal_byte_value = `\` octal_digit octal_digit octal_digit .
hex_byte_value   = `\` "x" hex_digit hex_digit .
little_u_value   = `\` "u" hex_digit hex_digit hex_digit hex_digit .
big_u_value      = `\` "U" hex_digit hex_digit hex_digit hex_digit
                           hex_digit hex_digit hex_digit hex_digit .

pkg encoding/base64, method (*Encoding) AppendDecode([]uint8, []uint8) ([]uint8, error) #53693
pkg encoding/base64, method (*Encoding) AppendEncode([]uint8, []uint8) []uint8 #53693
pkg encoding/hex, func AppendDecode([]uint8, []uint8) ([]uint8, error) #53693
pkg encoding/hex, func AppendEncode([]uint8, []uint8) []uint8 #53693
pkg go/ast, func NewPackage //deprecated #52463
pkg go/ast, func Unparen(Expr) Expr #60061
pkg go/ast, type Importer //deprecated #52463

package tar

import (
	"bytes"
	"encoding/hex"
	"errors"
	"io"
	"io/fs"
	"os"
	"path"
	"reflect"
	"sort"
	"strings"
	"testing"
	"testing/fstest"
	"testing/iotest"
	"time"
)

func bytediff(a, b []byte) string {
	const (
		uniqueA  = "-  "
		uniqueB  = "+  "
		identity = "   "
	)
	var ss []string
	sa := strings.Split(strings.TrimSpace(hex.Dump(a)), "\n")

		if n.Define != "" {
			if i, err := strconv.ParseInt(n.Define, 0, 64); err == nil {
				n.Kind = "iconst"
				// Turn decimal into hex, just for consistency
				// with enum-derived constants. Otherwise
				// in the cgo -godefs output half the constants
				// are in hex and half are in whatever the #define used.
				n.Const = fmt.Sprintf("%#x", i)
			} else if n.Define[0] == '\'' {