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<title>Issue 999: Taking the address of a function</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++11">C++11</a> status.</em></p>
<h3 id="999"><a href="lwg-defects.html#999">999</a>. Taking the address of a function</h3>
<p><b>Section:</b> 26.11 <a href="https://wg21.link/specialized.algorithms">[specialized.algorithms]</a> <b>Status:</b> <a href="lwg-active.html#C++11">C++11</a>
 <b>Submitter:</b> Peter Dimov <b>Opened:</b> 2009-03-09 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View other</b> <a href="lwg-index-open.html#specialized.algorithms">active issues</a> in [specialized.algorithms].</p>
<p><b>View all other</b> <a href="lwg-index.html#specialized.algorithms">issues</a> in [specialized.algorithms].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++11">C++11</a> status.</p>
<p><b>Discussion:</b></p>
<p>
The same fix (reference <a href="lwg-defects.html#987" title="reference_wrapper and function types (Status: C++11)">987</a><sup><a href="https://cplusplus.github.io/LWG/issue987" title="Latest snapshot">(i)</a></sup>) may be applied to <code>addressof</code>, which is also constrained to
<code>ObjectType</code>. (That was why <code>boost::ref</code> didn't work with functions - it
tried to apply <code>boost::addressof</code> and the <code>reinterpret_cast&lt;char&amp;&gt;</code>
implementation of <code>addressof</code> failed.)
</p>



<p><i>[
Batavia (2009-05):
]</i></p>

<blockquote>
<p>
We agree.
</p>
<p>
Move to Tentatively Ready.
</p>
</blockquote>

<p><i>[
2009-07 Frankfurt
]</i></p>


<blockquote><p>
Moved from Tentatively Ready to Open only because the wording needs to be
tweaked for concepts removal.
</p></blockquote>

<p><i>[
2009-10-10 Daniel updates wording to concept-free.
]</i></p>


<p><i>[
2009-10 post-Santa Cruz:
]</i></p>


<blockquote><p>
Move to Tentatively Ready.
</p></blockquote>



<p id="res-999"><b>Proposed resolution:</b></p>
<p><i>[
The resolution assumes that <code>addressof</code> is reintroduced as described in
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2946.pdf">n2946</a>
]</i></p>


<p>
In 26.11 <a href="https://wg21.link/specialized.algorithms">[specialized.algorithms]</a> change as described:
</p>

<blockquote><pre>
template &lt;class T&gt; T* addressof(T&amp; r);
</pre>
<blockquote><p>
<i>Returns:</i> The actual address of the object <ins>or function</ins>
referenced by <code>r</code>, even in the presence of an overloaded <code>operator&amp;</code>.
</p></blockquote>
</blockquote>







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