err:  ErrHeader,
	}, {
		file: "testdata/pax-pos-size-file.tar",
		headers: []*Header{{
			Name:     "foo",
			Mode:     0640,
			Uid:      319973,
			Gid:      5000,
			Size:     999,
			ModTime:  time.Unix(1442282516, 0),
			Typeflag: '0',
			Uname:    "joetsai",
			Gname:    "eng",
			PAXRecords: map[string]string{
				"size": "000000000000000000000999",
			},
			Format: FormatPAX,