he <code class="function">db_env_set_func_realloc()</code> function may be called at any time
         during the life of the application, it should normally be called
         before making calls to the <a class="xref" href="envcreate.html" title="db_env_create">db_env_create</a> or
         <a class="xref" href="dbcreate.html" title="db_create">db_create</a> methods.
    </p>
      <p>
         The <code class="function">db_env_set_func_realloc()</code> <span>
                  function returns a non-zero