color.Gray{Y: 70},
		color.Gray{Y: 35},
		color.Gray{Y: 0},
	})

	draw.FloydSteinberg.Draw(pi, im.Bounds(), im, image.Point{})
	shade := []string{" ", "░", "▒", "▓", "█"}
	for i, p := range pi.Pix {
		fmt.Print(shade[p])
		if (i+1)%width == 0 {
			fmt.Print("\n")
		}
	}

		yo := d.img3.YOffset(bounds.Min.X, y)
		co := d.img3.COffset(bounds.Min.X, y)
		for i, iMax := 0, bounds.Max.X-bounds.Min.X; i < iMax; i++ {
			img.Pix[po+4*i+0] = d.img3.Y[yo+i]
			img.Pix[po+4*i+1] = d.img3.Cb[co+i/cScale]
			img.Pix[po+4*i+2] = d.img3.Cr[co+i/cScale]
			img.Pix[po+4*i+3] = 255
		}
	}
	return img, nil
}

// Decode reads a JPEG image from r and returns it as an [image.Image].

		nOffset := pass.start * dx // steps through the output as defined by pass.
		for y := pass.start; y < dy; y += pass.skip {
			copy(nPix[nOffset:nOffset+dx], m.Pix[offset:offset+dx])
			offset += dx
			nOffset += dx * pass.skip
		}
	}
	m.Pix = nPix
}

// Decode reads a GIF image from r and returns the first embedded
// image as an [image.Image].
func Decode(r io.Reader) (image.Image, error) {

	p, q := leaktoret2(&x)
	gp = p
	gp = q
}

func f5() {
	var x int
	leaktoret22(leaktoret2(&x))
}

func f6() {
	var x int // ERROR "moved to heap: x"
	px1, px2 := leaktoret22(leaktoret2(&x))
	gp = px1
	_ = px2
}

type T struct{ x int }

func (t *T) Foo(u int) (*T, bool) { // ERROR "leaking param: t to result"
	t.x += u
	return t, true
}

func f7() *T {

// TestWriteGrayscale tests that a grayscale images survives a round-trip
// through encode/decode cycle.
func TestWriteGrayscale(t *testing.T) {
	m0 := image.NewGray(image.Rect(0, 0, 32, 32))
	for i := range m0.Pix {
		m0.Pix[i] = uint8(i)
	}
	var buf bytes.Buffer
	if err := Encode(&buf, m0, nil); err != nil {
		t.Fatal(err)
	}
	m1, err := Decode(&buf)
	if err != nil {
		t.Fatal(err)
	}

	r = r.Intersect(p.Rect)
	// If r1 and r2 are Rectangles, r1.Intersect(r2) is not guaranteed to be inside
	// either r1 or r2 if the intersection is empty. Without explicitly checking for
	// this, the Pix[i:] expression below can panic.
	if r.Empty() {
		return &YCbCr{
			SubsampleRatio: p.SubsampleRatio,
		}
	}
	yi := p.YOffset(r.Min.X, r.Min.Y)
	ci := p.COffset(r.Min.X, r.Min.Y)
	return &YCbCr{

  %pi0 = "tf.TPUPartitionedInputV2"(%arg0) {N = 2, partition_dims = [], _XlaSharding = "", is_packed = true} : (tensor<?xi32>) -> (tensor<?xi32>)
  %pi1 = "tf.TPUPartitionedInputV2"(%arg0) {N = 2, partition_dims = [], _XlaSharding = "", is_packed = true} : (tensor<?xi32>) -> (tensor<?xi32>)
  %1 = "tf.TPUReplicatedInput"(%pi0, %pi1) {is_mirrored_variable = true, is_packed = false} : (tensor<?xi32>, tensor<?xi32>) -> (tensor<?xi32>)

`

const post = `
	default:
		return false
	}
	return true
}
`

const sratioCase = `
	case image.YCbCrSubsampleRatio%s:
		for y, sy := y0, sp.Y; y != y1; y, sy = y+1, sy+1 {
			dpix := dst.Pix[y*dst.Stride:]
			yi := (sy-src.Rect.Min.Y)*src.YStride + (sp.X - src.Rect.Min.X)
			%s

				// This is an inline version of image/color/ycbcr.go's func YCbCrToRGB.
				yy1 := int32(src.Y[yi]) * 0x10101

	bw.setup()
	lzww := lzw.NewWriter(bw, lzw.LSB, litWidth)
	if dx := b.Dx(); dx == pm.Stride {
		_, e.err = lzww.Write(pm.Pix[:dx*b.Dy()])
		if e.err != nil {
			lzww.Close()
			return
		}
	} else {
		for i, y := 0, b.Min.Y; y < b.Max.Y; i, y = i+pm.Stride, y+1 {
			_, e.err = lzww.Write(pm.Pix[i : i+dx])
			if e.err != nil {
				lzww.Close()
				return
			}
		}
	}
	lzww.Close() // flush to bw

	}
}

func BenchmarkEncodeRandomPaletted(b *testing.B) {
	paletted := image.NewPaletted(image.Rect(0, 0, 640, 480), palette.Plan9)
	rnd := rand.New(rand.NewSource(123))
	for i := range paletted.Pix {
		paletted.Pix[i] = uint8(rnd.Intn(256))
	}

	b.SetBytes(640 * 480 * 1)
	b.ReportAllocs()
	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		Encode(io.Discard, paletted, nil)
	}
}