p.Function = append(p.Function, fn)
		}
		loc.Line = []Line{
			{
				Function: fn,
				Line:     lineNo,
			},
		}
		loc.Address = 0
	}

	p.remapLocationIDs()
	p.remapFunctionIDs()
	p.remapMappingIDs()

	return nil

			if seen[l] {
				continue
			}
			l.ID = uint64(len(locs) + 1)
			locs = append(locs, l)
			seen[l] = true
		}
	}
	p.Location = locs
}

func (p *Profile) remapFunctionIDs() {
	seen := make(map[*Function]bool, len(p.Function))
	var fns []*Function

	for _, l := range p.Location {
		for _, ln := range l.Line {
			fn := ln.Function
			if fn == nil || seen[fn] {