// execute write barriers.
		for _, datap := range activeModules() {
			if datap.data <= dst && dst < datap.edata {
				bulkBarrierBitmap(dst, src, size, dst-datap.data, datap.gcdatamask.bytedata)
				return
			}
		}
		for _, datap := range activeModules() {
			if datap.bss <= dst && dst < datap.ebss {
				bulkBarrierBitmap(dst, src, size, dst-datap.bss, datap.gcbssmask.bytedata)
				return
			}
		}

		}

		if oldB >= dst.B { // main bucket bits in dst is less than oldB bits in src
			dstBmap := (*bmap)(add(dst.buckets, (uintptr(i)&bucketMask(dst.B))*uintptr(t.BucketSize)))
			for dstBmap.overflow(t) != nil {
				dstBmap = dstBmap.overflow(t)
			}
			pos := 0
			for srcBmap != nil {
				dstBmap, pos = moveToBmap(t, dst, dstBmap, pos, srcBmap)
				srcBmap = srcBmap.overflow(t)
			}
			continue
		}

	}
	if base, _, _ := findObject(p2, 0, 0); base != 0 {
		return "heap"
	}
	for _, datap := range activeModules() {
		if datap.data <= p2 && p2 < datap.edata || datap.noptrdata <= p2 && p2 < datap.enoptrdata {
			return "data"
		}
		if datap.bss <= p2 && p2 < datap.ebss || datap.noptrbss <= p2 && p2 <= datap.enoptrbss {
			return "bss"
		}
	}
	KeepAlive(p)
	return "other"