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<title>Issue 3885: 'op' should be in [zombie.names]</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#WP">WP</a> status.</em></p>
<h3 id="3885"><a href="lwg-defects.html#3885">3885</a>. '<code>op</code>' should be in [zombie.names]</h3>
<p><b>Section:</b> 16.4.5.3.2 <a href="https://wg21.link/zombie.names">[zombie.names]</a> <b>Status:</b> <a href="lwg-active.html#WP">WP</a>
 <b>Submitter:</b> Jonathan Wakely <b>Opened:</b> 2023-02-11 <b>Last modified:</b> 2023-11-22</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all issues with</b> <a href="lwg-status.html#WP">WP</a> status.</p>
<p><b>Discussion:</b></p>
<p>
C++98 and C++11 defined a protected member <code>std::bind1st::op</code> so '<code>op</code>' should still be a reserved name, 
just like '<code>bind1st</code>' itself.
</p>

<p><i>[2023-03-22; Reflector poll]</i></p>

<p>
Set status to Tentatively Ready after seven votes in favour during reflector poll.
</p>

<p><i>[2023-06-17 Approved at June 2023 meeting in Varna. Status changed: Voting &rarr; WP.]</i></p>



<p id="res-3885"><b>Proposed resolution:</b></p>
<p>
This wording is relative to <a href="https://wg21.link/N4928" title=" Working Draft, Standard for Programming Language C++">N4928</a>.
</p>

<ol>
<li><p>Modify 16.4.5.3.2 <a href="https://wg21.link/zombie.names">[zombie.names]</a> as indicated:</p>

<blockquote>
<p>
-2- The following names are reserved as members for previous standardization, and may not be used as a name
for object-like macros in portable code:
</p>
<ol style="list-style-type: none">
<li><p>(2.1) &mdash; <code>argument_type</code>,</p></li>
<li><p>[&hellip;]</p></li>
<li><p>(2.3) &mdash; <code>io_state</code>,</p></li>
<li><p><ins>(2.?) &mdash; <code>op</code>,</ins></p></li>
<li><p>(2.4) &mdash; <code>open_mode</code>,</p></li>
<li><p>[&hellip;]</p></li>
</ol>
</blockquote>

</li>

</ol>





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