return
	}
	for ; p.next != 0; p = p.next.ptr() {
		if bpn > uintptr(unsafe.Pointer(p)) && bpn < uintptr(unsafe.Pointer(p.next)) {
			break
		}
	}
	if bpn+bp.size == uintptr(unsafe.Pointer(p.next)) {
		bp.size += p.next.ptr().size
		bp.next = p.next.ptr().next
		*p.next.ptr() = memHdr{}
	} else {
		bp.next = p.next
	}
	if uintptr(unsafe.Pointer(p))+p.size == bpn {
		p.size += bp.size
		p.next = bp.next
		*bp = memHdr{}