fatal("error extracting package %d payload from %s: %v",
					pkgIdx, mm.pod.mdf, err)
			}
		}
		p.ctab = make(map[uint32]decodecounter.FuncPayload)
	}
	mm.p = p
}

func (mm *metaMerge) visitFuncCounterData(data decodecounter.FuncPayload) {
	key := pkfunc{pk: data.PkgIdx, fcn: data.FuncIdx}
	val := mm.pod.pmm[key]
	// FIXME: in theory either A) len(val.Counters) is zero, or B)