func TestScanRune(t *testing.T) {
	for n, test := range scanTests {
		buf := strings.NewReader(test)
		s := NewScanner(buf)
		s.Split(ScanRunes)
		var i, runeCount int
		var expect rune
		// Use a string range loop to validate the sequence of runes.
		for i, expect = range test {
			if !s.Scan() {
				break
			}
			runeCount++
			got, _ := utf8.DecodeRune(s.Bytes())
			if got != expect {

	NGCW R13, R8                               // e8030d5a
	NGC R2, R7                                 // e70302da
	NGCSW R10, R5                              // e5030a7a
	NGCS R24, R16                              // f00318fa
	NOOP                                        // 1f2003d5
	ORNW R4@>11, R16, R3                       // 032ee42a
	ORN R22@>19, R3, R3                        // 634cf6aa
	ORRW $4294443071, R15, R24                 // f8490d32

			if n < 0 {
				panic(errNegativeRead)
			}
			if n > 0 {
				b.lastByte = int(p[n-1])
				b.lastRuneSize = -1
			}
			return n, b.readErr()
		}
		// One read.
		// Do not use b.fill, which will loop.
		b.r = 0
		b.w = 0
		n, b.err = b.rd.Read(b.buf)
		if n < 0 {
			panic(errNegativeRead)
		}
		if n == 0 {
			return 0, b.readErr()
		}
		b.w += n
	}

	// copy as much as we can

	PRFM	48(R6), PSTL2STRM               // d31880f9
	PRFM	8(R12), PLIL3STRM               // 8d0580f9
	PRFM	(R8), $25                       // 190180f9
	PRFM	8(R9), $30                      // 3e0580f9
	NOOP                                    // 1f2003d5
	HINT $0                                 // 1f2003d5
	DMB	$1
	SVC

// encryption
	SHA256H	V9.S4, V3, V2                   // 6240095e

		// the full set of names (below), record only that there were
		// unexported methods. (If the interface shrinks, we will notice
		// because a method signature emitted during the last loop
		// will disappear.)
		w.emitf("unexported methods")
	}

	pop()

	if !complete {
		return
	}

	if len(methodNames) == 0 {
		w.emitf("type %s interface {}", name)