ndef := r.NSym()
	nhashed64def := r.NHashed64def()
	nhasheddef := r.NHasheddef()
	or := &oReader{
		Reader:       r,
		unit:         unit,
		version:      localSymVersion,
		pkgprefix:    pkgprefix,
		syms:         make([]Sym, ndef+nhashed64def+nhasheddef+r.NNonpkgdef()+r.NNonpkgref()),
		ndef:         ndef,
		nhasheddef:   nhasheddef,
		nhashed64def: nhashed64def,
		objidx:       uint32(len(l.objs)),