fr_dstptr
i = (*fr->fr_dstfunc)(fr->fr_dstptr, fi->fi_v, lip, fin, ifs);
fr->fr_dstptr == NULL) {
fr->fr_dstptr = fr_resolvelookup(fr->fr_dsttype,
fp->fr_dstptr = fr_resolvelookup(fp->fr_dsttype,
ip_lookup_deref(fr->fr_dsttype, fr->fr_dstptr, ifs);