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<title>Issue 2400: shared_ptr's get_deleter() should use addressof()</title>
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<p><em>This page is a snapshot from the LWG issues list, see the <a href="lwg-active.html">Library Active Issues List</a> for more information and the meaning of <a href="lwg-active.html#C++17">C++17</a> status.</em></p>
<h3 id="2400"><a href="lwg-defects.html#2400">2400</a>. <code>shared_ptr</code>'s <code>get_deleter()</code> should use <code>addressof()</code></h3>
<p><b>Section:</b> 20.3.2.2.11 <a href="https://wg21.link/util.smartptr.getdeleter">[util.smartptr.getdeleter]</a> <b>Status:</b> <a href="lwg-active.html#C++17">C++17</a>
 <b>Submitter:</b> Stephan T. Lavavej <b>Opened:</b> 2014-06-14 <b>Last modified:</b> 2017-07-30</p>
<p><b>Priority: </b>0
</p>
<p><b>View all other</b> <a href="lwg-index.html#util.smartptr.getdeleter">issues</a> in [util.smartptr.getdeleter].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++17">C++17</a> status.</p>
<p><b>Discussion:</b></p>
<p>
The Standard Library should consistently use <code>addressof()</code> to defend itself against overloaded <code>operator&amp;()</code>.
<p/>
While we're in the neighbourhood, we should editorially change <code>0</code> to <code>nullptr</code>.
</p>

<p><i>[2014-06-16 Rapperswil]</i></p>

<p>
Move to Ready
</p>



<p id="res-2400"><b>Proposed resolution:</b></p>
<p>This wording is relative to N3936.</p>

<ol>
<li><p>Change 20.3.2.2.11 <a href="https://wg21.link/util.smartptr.getdeleter">[util.smartptr.getdeleter]</a> as indicated:</p>

<blockquote>
<pre>
template &lt;class D, class T&gt; get_deleter(const shared_ptr&lt;T&gt;&amp; p) noexcept;
</pre>
<p>
-1- <i>Returns</i>: If <code>p</code> owns a deleter <code>d</code> of type cv-unqualified <code>D</code>, returns 
<code><del>&amp;</del><ins>std::addressof(</ins>d<ins>)</ins></code>; 
otherwise returns <code><del>0</del><ins>nullptr</ins></code>. [&hellip;]
</p>
</blockquote>
</li>
</ol>





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