switch (SvTYPE(sv)) {	/* Console ourselves with a new value */
case SVt_PVAV:	*(SV**)ptr = (SV*)newAV();	break;
case SVt_PVHV:	*(SV**)ptr = (SV*)newHV();	break;
default:	*(SV**)ptr = newSV(0);		break;
}