if string(buf2) != "prefix"+string(buf[:n]) {
		t.Errorf("AppendVarint(%d): got %q, want %q", x, buf2, "prefix"+string(buf[:n]))
	}

	y, err := ReadVarint(bytes.NewReader(buf))
	if err != nil {
		t.Errorf("ReadVarint(%d): %s", x, err)
	}
	if x != y {
		t.Errorf("ReadVarint(%d): got %d", x, y)
	}
}

func testUvarint(t *testing.T, x uint64) {
	buf := make([]byte, MaxVarintLen64)
	n := PutUvarint(buf, x)

		}
	}
}

func (n name) name() string {
	if n.bytes == nil {
		return ""
	}
	i, l := n.readVarint(1)
	return unsafe.String(n.data(1+i, "non-empty string"), l)
}

func (n name) tag() string {
	if !n.hasTag() {
		return ""
	}
	i, l := n.readVarint(1)
	i2, l2 := n.readVarint(1 + i + l)
	return unsafe.String(n.data(1+i+l+i2, "non-empty string"), l2)
}

func pkgPath(n abi.Name) string {

		s += 7
	}
	return x, errOverflow
}

// ReadVarint reads an encoded signed integer from r and returns it as an int64.
// The error is [io.EOF] only if no bytes were read.
// If an [io.EOF] happens after reading some but not all the bytes,
// ReadVarint returns [io.ErrUnexpectedEOF].
func ReadVarint(r io.ByteReader) (int64, error) {
	ux, err := ReadUvarint(r) // ok to continue in presence of error
	x := int64(ux >> 1)

	buf := d.buf
	size, buf, err := readVarInt(5, buf)
	if err != nil {
		return err
	}
	if size > uint64(d.dynTab.allowedMaxSize) {
		return DecodingError{errors.New("dynamic table size update too large")}
	}
	d.dynTab.setMaxSize(uint32(size))
	d.buf = buf
	return nil
}

var errVarintOverflow = DecodingError{errors.New("varint integer overflow")}

// readVarInt reads an unsigned variable length integer off the

	uvdelta := readvarint(p)
	if uvdelta == 0 && !first {
		return false
	}
	if uvdelta&1 != 0 {
		uvdelta = ^(uvdelta >> 1)
	} else {
		uvdelta >>= 1
	}
	vdelta := int32(uvdelta)
	pcdelta := readvarint(p) * uint32(arch.MinLC)
	*pc += uint64(pcdelta)
	*val += vdelta
	return true
}

// readvarint reads, removes, and returns a varint from *p.

		}
		nbit := int64(x &^ 0x80)
		if nbit == 0 {
			nbit, p = readvarint(p)
		}
		var count int64
		count, p = readvarint(p)
		n += nbit * count
	}
	if len(p) > 0 {
		println("gcprog: found end instruction after", n, "ptrs, with", len(p), "bytes remaining")
		panic("gcprog: extra data at end of program")
	}
	return n
}

// readvarint reads a varint from p, returning the value and the remainder of p.

func (n Name) Name() string {
	if n.Bytes == nil {
		return ""
	}
	i, l := n.ReadVarint(1)
	return unsafe.String(n.DataChecked(1+i, "non-empty string"), l)
}

// Tag returns the tag string for n, or empty if there is none.
func (n Name) Tag() string {
	if !n.HasTag() {
		return ""
	}
	i, l := n.ReadVarint(1)
	i2, l2 := n.ReadVarint(1 + i + l)
	return unsafe.String(n.DataChecked(1+i+l+i2, "non-empty string"), l2)
}

		return funcData{}
	}
	idx := sort.Search(int(t.nfunctab), func(i int) bool {
		return ft.pc(i) > pc
	})
	idx--
	return t.funcData(uint32(idx))
}

// readvarint reads, removes, and returns a varint from *pp.
func (t *LineTable) readvarint(pp *[]byte) uint32 {
	var v, shift uint32
	p := *pp
	for shift = 0; ; shift += 7 {
		b := p[0]
		p = p[1:]
		v |= (uint32(b) & 0x7F) << shift
		if b&0x80 == 0 {

	return r.uint64() != 0
}

func (r *importReader) int64() int64 {
	n, err := binary.ReadVarint(&r.declReader)
	if err != nil {
		errorf("readVarint: %v", err)
	}
	return n
}

func (r *importReader) uint64() uint64 {
	n, err := binary.ReadUvarint(&r.declReader)
	if err != nil {
		errorf("readUvarint: %v", err)
	}
	return n
}

func (r *importReader) byte() byte {

	uvdelta := uint32(p[0])
	if uvdelta == 0 && !first {
		return nil, false
	}
	n := uint32(1)
	if uvdelta&0x80 != 0 {
		n, uvdelta = readvarint(p)
	}
	*val += int32(-(uvdelta & 1) ^ (uvdelta >> 1))
	p = p[n:]

	pcdelta := uint32(p[0])
	n = 1
	if pcdelta&0x80 != 0 {
		n, pcdelta = readvarint(p)
	}
	p = p[n:]