}
		if s.Addr == 0 || s.Size == 0 {
			continue
		}
		secs = append(secs, s)
	}

	secOverlaps := func(s1, s2 *elf.Section) bool {
		st1 := s1.Addr
		st2 := s2.Addr
		en1 := s1.Addr + s1.Size
		en2 := s2.Addr + s2.Size
		return max(st1, st2) < min(en1, en2)
	}

	// Sort by address
	sort.SliceStable(secs, func(i, j int) bool {
		return secs[i].Addr < secs[j].Addr
	})

	}
	return nil
}

// equalValueType returns true if the two value types are semantically
// equal. It ignores the internal fields used during encode/decode.
func equalValueType(st1, st2 *ValueType) bool {
	return st1.Type == st2.Type && st1.Unit == st2.Unit
}

// locationIDMap is like a map[uint64]*Location, but provides efficiency for
// ids that are densely numbered, which is often the case.
type locationIDMap struct {