}
		if got, want := fi.Mode(), v.fm; got != want {
			t.Errorf("i=%d: fi.Mode: got %o, want %o", i, got, want)
		}
		if got, want := h2.AccessTime, v.h.AccessTime; got != want {
			t.Errorf("i=%d: AccessTime: got %v, want %v", i, got, want)
		}
		if got, want := h2.ChangeTime, v.h.ChangeTime; got != want {
			t.Errorf("i=%d: ChangeTime: got %v, want %v", i, got, want)
		}

			star := tr.blk.toSTAR()
			prefix = p.parseString(star.prefix())
			hdr.AccessTime = time.Unix(p.parseNumeric(star.accessTime()), 0)
			hdr.ChangeTime = time.Unix(p.parseNumeric(star.changeTime()), 0)
		case format.has(FormatGNU):
			hdr.Format = format
			var p2 parser
			gnu := tr.blk.toGNU()
			if b := gnu.accessTime(); b[0] != 0 {
				hdr.AccessTime = time.Unix(p2.parseNumeric(b), 0)
			}

	// If the Format is unspecified, then Writer.WriteHeader rounds ModTime
	// to the nearest second and ignores the AccessTime and ChangeTime fields.
	//
	// To use AccessTime or ChangeTime, specify the Format as PAX or GNU.
	// To use sub-second resolution, specify the Format as PAX.
	ModTime    time.Time // Modification time
	AccessTime time.Time // Access time (requires either PAX or GNU support)

      long lastAccessTime = 0;
      long lastWriteTime = 0;
      for (ReferenceEntry<K, V> e : segment.recencyQueue) {
        long accessTime = e.getAccessTime();
        assertTrue(accessTime >= lastAccessTime);
        lastAccessTime = accessTime;
        long writeTime = e.getWriteTime();
        assertTrue(writeTime >= lastWriteTime);
        lastWriteTime = writeTime;
      }

		}
		if g, ok := groupMap.Load(h.Gid); ok {
			h.Gname = g.(string)
		} else if g, err := user.LookupGroupId(strconv.Itoa(h.Gid)); err == nil {
			h.Gname = g.Name
			groupMap.Store(h.Gid, h.Gname)
		}
	}
	h.AccessTime = statAtime(sys)
	h.ChangeTime = statCtime(sys)

	// Best effort at populating Devmajor and Devminor.
	if h.Typeflag == TypeChar || h.Typeflag == TypeBlock {
		dev := uint64(sys.Rdev) // May be int32 or uint32

			Gname:      "eng",
			AccessTime: time.Unix(1244592783, 0),
			ChangeTime: time.Unix(1244592783, 0),
		}, {
			Name:       "small2.txt",
			Mode:       0640,
			Uid:        73025,
			Gid:        5000,
			Size:       11,
			ModTime:    time.Unix(1244592783, 0),
			Typeflag:   '0',
			Uname:      "dsymonds",
			Gname:      "eng",
			AccessTime: time.Unix(1244592783, 0),

//	Mode              | uint21 |    uint21 |    uint57
//	Uid/Gid           | uint21 | unlimited |    uint57
//	Uname/Gname       |    32B | unlimited |       32B
//	ModTime           | uint33 | unlimited |     int89
//	AccessTime        |    n/a | unlimited |     int89
//	ChangeTime        |    n/a | unlimited |     int89
//	Devmajor/Devminor | uint21 |    uint21 |    uint57
//	------------------+--------+-----------+----------

	var f formatter // Ignore errors since they are expected
	var spd sparseDatas
	var spb []byte
	blk := tw.templateV7Plus(hdr, f.formatString, f.formatNumeric)
	if !hdr.AccessTime.IsZero() {
		f.formatNumeric(blk.toGNU().accessTime(), hdr.AccessTime.Unix())
	}
	if !hdr.ChangeTime.IsZero() {
		f.formatNumeric(blk.toGNU().changeTime(), hdr.ChangeTime.Unix())
	}
	// TODO(dsnet): Re-enable this when adding sparse support.

pkg archive/tar, method (*Writer) Write([]uint8) (int, error)
pkg archive/tar, method (*Writer) WriteHeader(*Header) error
pkg archive/tar, type Header struct
pkg archive/tar, type Header struct, AccessTime time.Time
pkg archive/tar, type Header struct, ChangeTime time.Time
pkg archive/tar, type Header struct, Devmajor int64
pkg archive/tar, type Header struct, Devminor int64
pkg archive/tar, type Header struct, Gid int