span class="keyword">in</span>&nbsp;<span class="constructor">Gc</span>.finalise&nbsp;f&nbsp;v&nbsp;</code></li>
</ul>

   The <code class="code">f</code> function can use all features of OCaml, including
   assignments that make the value reachable again.  It can also
   loop forever (in this case, the other
   finalisation functions will not be called during the execution of f,
   unless it calls <code class="code">finalise_release</code>).
   It can call <code class="code">finalise</code> on <code class=