private static long bytesToLong(byte[] bytes, int offset) {
        return (bytes[offset] & 0xFFL)
            | ((bytes[offset + 1] & 0xFFL) << 8)
            | ((bytes[offset + 2] & 0xFFL) << 16)
            | ((bytes[offset + 3] & 0xFFL) << 24)
            | ((bytes[offset + 4] & 0xFFL) << 32)
            | ((bytes[offset + 5] & 0xFFL) << 40)
            | ((bytes[offset + 6] & 0xFFL) << 48)

type objReader struct {
	a      *Archive
	b      *bio.Reader
	err    error
	offset int64
	limit  int64
	tmp    [256]byte
}

func (r *objReader) init(f *os.File) {
	r.a = &Archive{f, nil}
	r.offset, _ = f.Seek(0, io.SeekCurrent)
	r.limit, _ = f.Seek(0, io.SeekEnd)
	f.Seek(r.offset, io.SeekStart)
	r.b = bio.NewReader(f)
}

// error records that an error occurred.

	d.offset++
	return x
}

func (e *encoder) uint8(x uint8) {
	e.buf[e.offset] = x
	e.offset++
}

func (d *decoder) uint16() uint16 {
	x := d.order.Uint16(d.buf[d.offset : d.offset+2])
	d.offset += 2
	return x
}

func (e *encoder) uint16(x uint16) {
	e.order.PutUint16(e.buf[e.offset:e.offset+2], x)
	e.offset += 2
}

func (d *decoder) uint32() uint32 {

	for _, whence := range []int{SeekStart, SeekCurrent, SeekEnd} {
		for offset := int64(-3); offset <= 4; offset++ {
			brOff, brErr := br.Seek(offset, whence)
			srOff, srErr := sr.Seek(offset, whence)
			if (brErr != nil) != (srErr != nil) || brOff != srOff {
				t.Errorf("For whence %d, offset %d: bytes.Reader.Seek = (%v, %v) != SectionReader.Seek = (%v, %v)",
					whence, offset, brOff, brErr, srErr, srOff)
			}
		}
	}

		return nil, fmt.Errorf("could not identify base for %s: %v", name, err)
	}

	if b.fast || (!b.addr2lineFound && !b.llvmSymbolizerFound) {
		return &fileNM{file: file{
			b:       b,
			name:    name,
			buildID: buildID,
			m:       &elfMapping{start: start, limit: limit, offset: offset, kernelOffset: kernelOffset},
		}}, nil
	}

				sh.Size = sh64.Size
				sh.Offset = sh64.Offset
				sh.Align = sh64.Align
				sh.Reloff = sh64.Reloff
				sh.Nreloc = sh64.Nreloc
				sh.Flags = sh64.Flags
				if err := f.pushSection(sh, r); err != nil {
					return nil, err
				}
			}
		}
		if s != nil {
			if int64(s.Offset) < 0 {
				return nil, &FormatError{offset, "invalid section offset", s.Offset}
			}
			if int64(s.Filesz) < 0 {

}

func (w *writerAt) WriteAt(b []byte, offset int64) (n int, err error) {
	w.m.Lock()
	defer w.m.Unlock()

	if w.nextOffset == offset {
		n, err = w.w.Write(b)
		w.nextOffset += int64(n)
	} else {
		if offset > w.nextOffset+ftpMaxWriteOffset {
			return 0, fmt.Errorf("write offset %d is too far ahead of next offset %d", offset, w.nextOffset)
		}
		w.buffer[offset] = make([]byte, len(b))
		copy(w.buffer[offset], b)

// calculateFunctabSize calculates the size of the pclntab, and the offsets in
// the output buffer for individual func entries.
func (state pclntab) calculateFunctabSize(ctxt *Link, funcs []loader.Sym) (int64, []uint32) {
	ldr := ctxt.loader
	startLocations := make([]uint32, len(funcs))

	// Allocate space for the pc->func table. This structure consists of a pc offset
	// and an offset to the func structure. After that, we have a single pc

		{"/{}", "at offset 1: empty wildcard"},
		{"POST a.com/x/{}/y", "at offset 13: empty wildcard"},
		{"/{...}", "at offset 1: empty wildcard"},
		{"/{$...}", "at offset 1: bad wildcard"},
		{"/{$}/", "at offset 1: {$} not at end"},
		{"/{$}/x", "at offset 1: {$} not at end"},
		{"/abc/{$}/x", "at offset 5: {$} not at end"},
		{"/{a...}/", "at offset 1: {...} wildcard not at end"},

		rsc.offset = rsc.size + offset
	}
	if rsc.offset < 0 {
		return rsc.offset, errors.New("seek to invalid negative offset")
	}
	if rsc.offset >= rsc.size {
		return rsc.offset, errors.New("seek past end of object")
	}
	if rsc.reader != nil {
		_ = rsc.reader.Close()
		rsc.reader = nil
	}
	return rsc.offset, nil
}

// Read call to implement io.Reader