// version 1.0. The format of the sparse map consists of a series of
// newline-terminated numeric fields. The first field is the number of entries
// and is always present. Following this are the entries, consisting of two
// fields (offset, length). This function must stop reading at the end
// boundary of the block containing the last newline.
//

		FileHeader: fh,
		offset:     uint64(w.cw.count),
	}

	if strings.HasSuffix(fh.Name, "/") {
		// Set the compression method to Store to ensure data length is truly zero,
		// which the writeHeader method always encodes for the size fields.
		// This is necessary as most compression formats have non-zero lengths
		// even when compressing an empty string.
		fh.Method = Store
		fh.Flags &^= 0x8 // we will not write a data descriptor

	}
	// Simple test to make sure PAX extensions are in effect
	if !bytes.Contains(buf.Bytes(), []byte("PaxHeaders.0")) {
		t.Fatal("Expected at least one PAX header to be written.")
	}

	// xattr bar should always appear before others
	indices := []int{
		bytes.Index(buf.Bytes(), []byte("bar=bar")),
		bytes.Index(buf.Bytes(), []byte("baz=baz")),
		bytes.Index(buf.Bytes(), []byte("foo=foo")),

//
// The text returned from ReadLine does not include the line end ("\r\n" or "\n").
// No indication or error is given if the input ends without a final line end.
// Calling [Reader.UnreadByte] after ReadLine will always unread the last byte read
// (possibly a character belonging to the line end) even if that byte is not
// part of the line returned by ReadLine.
func (b *Reader) ReadLine() (line []byte, isPrefix bool, err error) {

			panic("should never see untyped nil type")
		default:
			switch s {
			case "byte":
				s = "uint8"
			case "rune":
				s = "int32"
			}
		}
		buf.WriteString(s)

	case *types.Array:
		fmt.Fprintf(buf, "[%d]", typ.Len())
		w.writeType(buf, typ.Elem())

	case *types.Slice:
		buf.WriteString("[]")
		w.writeType(buf, typ.Elem())

	case *types.Struct:
		buf.WriteString("struct")

pkg syscall, func Unsetenv(string) error

# CL 144020043 reflect: add Type.Comparable, Russ Cox <******@****.***>
pkg reflect, type Type interface, Comparable() bool

# CL 153670043 runtime: add PauseEnd array to MemStats and GCStats, Jens Frederich <******@****.***>
pkg runtime, type MemStats struct, PauseEnd [256]uint64
pkg runtime/debug, type GCStats struct, PauseEnd []time.Time

On Windows, the mode bits reported by [Lstat] and [Stat] for
reparse points changed. Mount points no longer have [ModeSymlink] set,
and reparse points that are not symlinks, Unix sockets, or dedup files
now always have [ModeIrregular] set.
This behavior is controlled by the `winsymlink` setting.
For Go 1.23, it defaults to `winsymlink=1`.

			prog.To = a[3]
			break
		}
		p.errorf("can't handle %s instruction with 4 operands", op)
		return
	case 5:
		if p.arch.Family == sys.PPC64 {
			prog.From = a[0]
			// Second arg is always a register type on ppc64.
			prog.Reg = p.getRegister(prog, op, &a[1])
			prog.AddRestSourceArgs([]obj.Addr{a[2], a[3]})
			prog.To = a[4]
			break
		}
		if p.arch.Family == sys.AMD64 {
			prog.From = a[0]

		if f == "" || len(f)%2 != 0 || strings.TrimLeft(f, "0123456789abcdef") != "" {
			return false
		}
	}
	return true
}

// It would be nice if the error messages always began with
// the standard file:line: prefix,
// but that's not where we are today.
// It might be at the beginning but it might be in the middle of the printed instruction.