type readBuf []byte

func (b *readBuf) uint8() uint8 {
	v := (*b)[0]
	*b = (*b)[1:]
	return v
}

func (b *readBuf) uint16() uint16 {
	v := binary.LittleEndian.Uint16(*b)
	*b = (*b)[2:]
	return v
}

func (b *readBuf) uint32() uint32 {
	v := binary.LittleEndian.Uint32(*b)
	*b = (*b)[4:]
	return v
}

func (b *readBuf) uint64() uint64 {
	v := binary.LittleEndian.Uint64(*b)

	directoryRecords   uint64
	directorySize      uint64
	directoryOffset    uint64 // relative to file
	commentLen         uint16
	comment            string
}

// timeZone returns a *time.Location based on the provided offset.
// If the offset is non-sensible, then this uses an offset of zero.
func timeZone(offset time.Duration) *time.Location {
	const (
		minOffset   = -12 * time.Hour  // E.g., Baker island at -12:00

pkg math/rand/v2, method (*Rand) Uint64() uint64 #61716
pkg math/rand/v2, method (*Rand) Uint64N(uint64) uint64 #61716
pkg math/rand/v2, method (*Rand) UintN(uint) uint #61716
pkg math/rand/v2, method (*Zipf) Uint64() uint64 #61716
pkg math/rand/v2, type ChaCha8 struct #61716
pkg math/rand/v2, type PCG struct #61716
pkg math/rand/v2, type Rand struct #61716
pkg math/rand/v2, type Source interface { Uint64 } #61716

	}
	err = rc.Close()
	if err != nil {
		t.Fatal("closing:", err)
	}
	if size+int64(len("END\n")) >= 1<<32-1 {
		if got, want := f0.UncompressedSize, uint32(uint32max); got != want {
			t.Errorf("UncompressedSize %#x, want %#x", got, want)
		}
	}

	if got, want := f0.UncompressedSize64, uint64(size)+uint64(len(end)); got != want {
		t.Errorf("UncompressedSize64 %#x, want %#x", got, want)
	}

	return buf

	c.byte = c.Ident("byte")
	c.int8 = c.Ident("int8")
	c.int16 = c.Ident("int16")
	c.int32 = c.Ident("int32")
	c.int64 = c.Ident("int64")
	c.uint8 = c.Ident("uint8")
	c.uint16 = c.Ident("uint16")
	c.uint32 = c.Ident("uint32")
	c.uint64 = c.Ident("uint64")
	c.uintptr = c.Ident("uintptr")
	c.float32 = c.Ident("float32")
	c.float64 = c.Ident("float64")
	c.complex64 = c.Ident("complex64")

	r, err := NewReader(bytes.NewReader(buf2.Bytes()), int64(buf2.Len()))
	if err != nil {
		t.Fatal(err)
	}
	for i, wt := range writeTests {
		testReadFile(t, r.File[i], &wt)
	}
}

func TestWriterCreateRaw(t *testing.T) {
	files := []struct {
		name             string
		content          []byte
		method           uint16
		flags            uint16
		crc32            uint32
		uncompressedSize uint64

		} else {
			b.uint32(h.CompressedSize)
			b.uint32(h.UncompressedSize)
		}

		b.uint16(uint16(len(h.Name)))
		b.uint16(uint16(len(h.Extra)))
		b.uint16(uint16(len(h.Comment)))
		b = b[4:] // skip disk number start and internal file attr (2x uint16)
		b.uint32(h.ExternalAttrs)
		if h.offset > uint32max {
			b.uint32(uint32max)
		} else {
			b.uint32(uint32(h.offset))
		}

		}
		name := filepath.ToSlash(path)
		w, err := zw.CreateRaw(&zip.FileHeader{
			Name:               name,
			Method:             zip.Store,
			CompressedSize64:   uint64(len(data)),
			UncompressedSize64: uint64(len(data)),
			CRC32:              crc32.ChecksumIEEE(data),
		})
		if err != nil {
			log.Fatal(err)
		}
		if _, err := w.Write(data); err != nil {
			log.Fatal(err)
		}

	false = 0 != 0 // Untyped bool.
)

// uint8 is the set of all unsigned 8-bit integers.
// Range: 0 through 255.
type uint8 uint8

// uint16 is the set of all unsigned 16-bit integers.
// Range: 0 through 65535.
type uint16 uint16

// uint32 is the set of all unsigned 32-bit integers.
// Range: 0 through 4294967295.
type uint32 uint32

// uint64 is the set of all unsigned 64-bit integers.

}

func messWith(fileName string, corrupter func(b []byte)) (r io.ReaderAt, size int64) {
	data, err := os.ReadFile(filepath.Join("testdata", fileName))
	if err != nil {
		panic("Error reading " + fileName + ": " + err.Error())
	}
	corrupter(data)
	return bytes.NewReader(data), int64(len(data))
}

func returnCorruptCRC32Zip() (r io.ReaderAt, size int64) {
	return messWith("go-with-datadesc-sig.zip", func(b []byte) {