sr := ldr.CreateSymForUpdate("go:buildinfo.ref", 0)
	sr.SetType(sym.SRODATA)
	sr.SetAlign(int32(ctxt.Arch.PtrSize))
	sr.AddAddr(ctxt.Arch, s.Sym())
}

// appendString appends s to data, prefixed by its varint-encoded length.
func appendString(data []byte, s string) []byte {
	var v [binary.MaxVarintLen64]byte
	n := binary.PutUvarint(v[:], uint64(len(s)))
	data = append(data, v[:n]...)
	data = append(data, s...)