s := sl[i].s
		l.sub[s] = ns
		ns = s
	}

	// Update sub for outer symbol, then return
	l.sub[s] = sl[0].s
	return sl[0].s
}

// SortSyms sorts a list of symbols by their value.
func (l *Loader) SortSyms(ss []Sym) {
	sort.SliceStable(ss, func(i, j int) bool { return l.SymValue(ss[i]) < l.SymValue(ss[j]) })
}

// Insure that reachable bitmap and its siblings have enough size.