t.Fatal(err)
	}

	hdr, err := FileInfoHeader(fileinfo, "")
	if err != nil {
		t.Fatalf("os.Stat:1 %v", err)
	}

	// some sample data
	chineseFilename := "文件名"
	chineseGroupname := "組"
	chineseUsername := "用戶名"

	hdr.Name = chineseFilename
	hdr.Gname = chineseGroupname
	hdr.Uname = chineseUsername

	contents := strings.Repeat(" ", int(hdr.Size))

	var buf bytes.Buffer

	modTime := hdr.ModTime
	if modTime.IsZero() {
		modTime = time.Unix(0, 0)
	}

	v7 := tw.blk.toV7()
	v7.typeFlag()[0] = hdr.Typeflag
	fmtStr(v7.name(), hdr.Name)
	fmtStr(v7.linkName(), hdr.Linkname)
	fmtNum(v7.mode(), hdr.Mode)
	fmtNum(v7.uid(), int64(hdr.Uid))
	fmtNum(v7.gid(), int64(hdr.Gid))
	fmtNum(v7.size(), hdr.Size)
	fmtNum(v7.modTime(), modTime.Unix())

	ustar := tw.blk.toUSTAR()

				}
				chksums = append(chksums, fmt.Sprintf("%x", h.Sum(nil)))
			}

			for i, hdr := range hdrs {
				if i >= len(v.headers) {
					t.Fatalf("entry %d: unexpected header:\ngot %+v", i, *hdr)
				}
				if !reflect.DeepEqual(*hdr, *v.headers[i]) {
					t.Fatalf("entry %d: incorrect header:\ngot  %+v\nwant %+v", i, *hdr, *v.headers[i])
				}
			}
			if len(hdrs) != len(v.headers) {

for compatibility reasons.
Packages or programs may define additional settings for internal debugging purposes;
for example,
see the [runtime documentation](/pkg/runtime#hdr-Environment_Variables)
and the [go command documentation](/cmd/go#hdr-Build_and_test_caching).

### Go 1.24

Go 1.24 changed the global [`math/rand.Seed`](/pkg/math/rand/#Seed) to be a
no-op. This behavior is controlled by the `randseednop` setting.

						if v == latestCount && latest.header.sortsBefore(k) {
							// Tiebreak, use sort.
							continue
						}
						for _, a := range tops {
							hdr := a.header
							if !strict {
								hdr.Signature = [4]byte{}
							}
							if hdr == k {
								latest = a
							}
						}
						latestCount = v
					}
					break
				}
			}
			if latestCount >= quorum {

					b = nbuf
				}

				hdr, v, err := decodeXLHeaders(v)
				if err != nil {
					return nil, err
				}
				type version struct {
					Idx      int
					Header   json.RawMessage
					Metadata json.RawMessage
				}
				versions := make([]version, hdr.versions)
				headerVer := hdr.headerVer
				err = decodeVersions(v, hdr.versions, func(idx int, hdr, meta []byte) error {

func getContentChecksum(h http.Header) (t ChecksumType, s string) {
	t = ChecksumNone
	alg := h.Get(xhttp.AmzChecksumAlgo)
	if alg != "" {
		t |= NewChecksumType(alg)
		if t.IsSet() {
			hdr := t.Key()
			if s = h.Get(hdr); s == "" {
				return ChecksumNone, ""
			}
		}
		return t, s
	}
	checkType := func(c ChecksumType) {
		if got := h.Get(c.Key()); got != "" {
			// If already set, invalid

together. The directive can include a list of build constraints limiting its
effect to systems satisfying one of the constraints
(see https://golang.org/pkg/go/build/#hdr-Build_Constraints for details about the constraint syntax).
For example:

	// #cgo CFLAGS: -DPNG_DEBUG=1
	// #cgo amd64 386 CFLAGS: -DX86=1
	// #cgo LDFLAGS: -lpng
	// #include <png.h>
	import "C"