  <tr class='unstable module-item'>
                        <td><a class='constant' href='constant.EMPTY.html'
                               title='alloc::heap::EMPTY'>EMPTY</a></td>
                        <td class='docblock short'>
                            [<em class='stab unstable'>Unstable</em>] <p>An arbitrary non-null address to represent zero-size allocations.</p>

                        </td>
                    </tr>
                </table><h2 id='functions' class='section-header'><a href="#