//   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
	xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0x80-0x8F
	xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0x90-0x9F
	xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0xA0-0xAF
	xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, xx, // 0xB0-0xBF
	xx, xx, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, s1, // 0xC0-0xCF

	p := curve.Params().P
	_, x, y, _ := GenerateKey(curve, rand.Reader)
	xx, yy := new(big.Int), new(big.Int)

	// Check if the sign is getting dropped.
	xx.Neg(x)
	checkIsOnCurveFalse("-x, y", xx, y)
	yy.Neg(y)
	checkIsOnCurveFalse("x, -y", x, yy)

	// Check if negative values are reduced modulo P.
	xx.Sub(x, p)
	checkIsOnCurveFalse("x-P, y", xx, y)
	yy.Sub(y, p)
	checkIsOnCurveFalse("x, y-P", x, yy)

    assertSame("xx", Strings.padEnd("xx", 0, '-'));
    assertSame("xx", Strings.padEnd("xx", 2, '-'));
  }

  public void testPadEnd_somePadding() {
    assertEquals("-", Strings.padEnd("", 1, '-'));
    assertEquals("--", Strings.padEnd("", 2, '-'));
    assertEquals("x-", Strings.padEnd("x", 2, '-'));
    assertEquals("x--", Strings.padEnd("x", 3, '-'));
    assertEquals("xx-", Strings.padEnd("xx", 3, '-'));
  }

func foo7(xx **int, yy *int) { // ERROR "xx does not escape$" "yy does not escape$"
	**xx = *yy
}

func foo8(xx, yy *int) int { // ERROR "xx does not escape$" "yy does not escape$"
	xx = yy
	return *xx
}

func foo9(xx, yy *int) *int { // ERROR "leaking param: xx to result ~r0 level=0$" "leaking param: yy to result ~r0 level=0$"
	xx = yy
	return xx
}

func foo10(xx, yy *int) { // ERROR "xx does not escape$" "yy does not escape$"

	// x = +√(u/v)
	xx, wasSquare := new(field.Element).SqrtRatio(u, vv)
	if wasSquare == 0 {
		return nil, errors.New("edwards25519: invalid point encoding")
	}

	// Select the negative square root if the sign bit is set.
	xxNeg := new(field.Element).Negate(xx)
	xx = xx.Select(xxNeg, xx, int(x[31]>>7))

	v.x.Set(xx)
	v.y.Set(y)
	v.z.One()
	v.t.Multiply(xx, y) // xy = T / Z

	return v, nil

		var ii int
		ii = i
		_ = ii
		var xx float64
		xx = x /* ERRORx `cannot use .* in assignment` */
		_ = xx
	}
	var ii int
	var xx float32
	for ii, xx = range a {}
	_, _ = ii, xx

	for range b {}
	for i := range b {
		var ii int
		ii = i
		_ = ii
	}
	for i, x := range b {
		var ii int
		ii = i
		_ = ii
		var xx string
		xx = x
		_ = xx
	}

	for range s {}

func foo7(xx **int, yy *int) { // ERROR "xx does not escape$" "yy does not escape$"
	**xx = *yy
}

func foo8(xx, yy *int) int { // ERROR "xx does not escape$" "yy does not escape$"
	xx = yy
	return *xx
}

func foo9(xx, yy *int) *int { // ERROR "leaking param: xx to result ~r0 level=0$" "leaking param: yy to result ~r0 level=0$"
	xx = yy
	return xx
}

func foo10(xx, yy *int) { // ERROR "xx does not escape$" "yy does not escape$"

	//Network Adapter:  Intel Gigabit Network Connection
	//Physical Address: XX-XX-XX-XX-XX-XX
	//Transport Name:   \Device\Tcpip_{XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}
	//
	//Connection Name:  Wireless Network Connection
	//Network Adapter:  Wireles WLAN Card
	//Physical Address: XX-XX-XX-XX-XX-XX
	//Transport Name:   Media disconnected
	//
	//Connection Name:  Bluetooth Network Connection

-server\n\
-Xms128m\n\
-Xmx512m\n\
-XX:MaxMetaspaceSize=128m\n\
-XX:CompressedClassSpaceSize=32m\n\
-XX:-UseGCOverheadLimit\n\
-XX:+UseTLAB\n\
-XX:+DisableExplicitGC\n\
-XX:-HeapDumpOnOutOfMemoryError\n\
-XX:-OmitStackTraceInFastThrow\n\
-XX:+UnlockExperimentalVMOptions\n\
-XX:+UseG1GC\n\
-XX:InitiatingHeapOccupancyPercent=45\n\
-XX:G1HeapRegionSize=1m\n\
-XX:MaxGCPauseMillis=60000\n\

	fmt.Printf("%q\n", re.FindAllStringSubmatch("-ab-axb-", -1))
	fmt.Printf("%q\n", re.FindAllStringSubmatch("-axxb-ab-", -1))
	// Output:
	// [["ab" ""]]
	// [["axxb" "xx"]]
	// [["ab" ""] ["axb" "x"]]
	// [["axxb" "xx"] ["ab" ""]]
}

func ExampleRegexp_FindAllStringSubmatchIndex() {
	re := regexp.MustCompile(`a(x*)b`)
	// Indices:
	//    01234567   012345678
	//    -ab-axb-   -axxb-ab-