// preceded and followed by a faulting page.
func dangerousSlice(t *testing.T) []byte {
	pagesize := syscall.Getpagesize()
	b, err := syscall.Mmap(0, 0, 3*pagesize, syscall.PROT_READ|syscall.PROT_WRITE, syscall.MAP_ANONYMOUS|syscall.MAP_PRIVATE)
	if err != nil {
		t.Fatalf("mmap failed %s", err)
	}
	err = syscall.Mprotect(b[:pagesize], syscall.PROT_NONE)
	if err != nil {
		t.Fatalf("mprotect low failed %s\n", err)
	}

	os.Exit(m.Run())
}

func loadSyms(t *testing.T, dbgExePath string) map[string]string {
	cmd := testenv.Command(t, testenv.GoToolPath(t), "tool", "nm", dbgExePath)
	out, err := cmd.CombinedOutput()
	if err != nil {
		t.Fatalf("%v: %v\n%s", cmd, err, string(out))
	}
	syms := make(map[string]string)
	scanner := bufio.NewScanner(bytes.NewReader(out))
	for scanner.Scan() {

	defer r.mu.Unlock()
	var err error
	if r.fr != nil {
		err = r.fr.Close()
		flateReaderPool.Put(r.fr)
		r.fr = nil
	}
	return err
}

var (
	compressors   sync.Map // map[uint16]Compressor
	decompressors sync.Map // map[uint16]Decompressor
)

func init() {
	compressors.Store(Store, Compressor(func(w io.Writer) (io.WriteCloser, error) { return &nopCloser{w}, nil }))

func init() {
	sysStat = statUnix
}

// userMap and groupMap caches UID and GID lookups for performance reasons.
// The downside is that renaming uname or gname by the OS never takes effect.
var userMap, groupMap sync.Map // map[int]string

func statUnix(fi fs.FileInfo, h *Header, doNameLookups bool) error {
	sys, ok := fi.Sys().(*syscall.Stat_t)
	if !ok {
		return nil
	}
	h.Uid = int(sys.Uid)
	h.Gid = int(sys.Gid)

	log.SetFlags(0)
	flag.Usage = usage
	flag.Parse()
	args := flag.Args()
	if len(args) != 1 || !strings.HasSuffix(args[0], ".zip") {
		usage()
	}

	var zb bytes.Buffer
	zw := zip.NewWriter(&zb)
	seen := make(map[string]bool)
	err := filepath.WalkDir(".", func(path string, d fs.DirEntry, err error) error {
		if d.IsDir() {
			return nil
		}
		data, err := os.ReadFile(path)
		if err != nil {
			log.Fatal(err)
		}

func Now() Time {
	var now Time
	return now
}

var x = &S{
	Public:     nil,
	private:    nil,
	PublicTime: Now(),
}

var parenExpr = (1 + 5)

var funcLit = func() {}

var m map[string]int

var chanVar chan int

var ifaceVar any = 5

var assertVar = ifaceVar.(int)

var indexVar = m["foo"]

var Byte byte
var ByteFunc func(byte) rune

type ByteStruct struct {

package arch

import (
	"strings"

	"cmd/internal/obj"
	"cmd/internal/obj/arm"
)

var armLS = map[string]uint8{
	"U":  arm.C_UBIT,
	"S":  arm.C_SBIT,
	"W":  arm.C_WBIT,
	"P":  arm.C_PBIT,
	"PW": arm.C_WBIT | arm.C_PBIT,
	"WP": arm.C_WBIT | arm.C_PBIT,
}

var armSCOND = map[string]uint8{
	"EQ":  arm.C_SCOND_EQ,
	"NE":  arm.C_SCOND_NE,
	"CS":  arm.C_SCOND_HS,
	"HS":  arm.C_SCOND_HS,