span><span class="identifier">asio</span><span class="special">::</span><span class="identifier">buffer_cast</span></code> function permits violations
        of type safety, so uses of it in application code should be carefully considered.
      </p>
<h5>
<a name="boost_asio.reference.mutable_buffer.h3"></a>
        <span><a name="boost_asio.reference.mutable_buffer.requirements"></a></span><a class="link" href="mutable_buffer.html#boost_asio.reference.mutable_buffer.requirements">Requirements</a>
      </