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<title>Issue 1396: regex should support allocators</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#NAD">NAD</a> status.</em></p>
<h3 id="1396"><a href="lwg-closed.html#1396">1396</a>. <code>regex</code> should support allocators</h3>
<p><b>Section:</b> 28.6.7 <a href="https://wg21.link/re.regex">[re.regex]</a> <b>Status:</b> <a href="lwg-active.html#NAD">NAD</a>
 <b>Submitter:</b> INCITS <b>Opened:</b> 2010-08-25 <b>Last modified:</b> 2020-11-09</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all other</b> <a href="lwg-index.html#re.regex">issues</a> in [re.regex].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#NAD">NAD</a> status.</p>
<p><b>Duplicate of:</b> <a href="lwg-closed.html#1451" title="regex should support allocators (Status: Dup)">1451</a></p>
<p><b>Discussion:</b></p>
<p><b>Addresses US-104, US-141</b></p>
<p>
<code>std::basic_regex</code> should have an allocator for all the
reasons that a <code>std::string</code> does. For example, I can use
<code>boost::interprocess</code> to put a <code>string</code> or <code>vector</code>
in shared memory, but not a <code>regex</code>.
</p>

<p><i>[
Resolution proposed by ballot comment
]</i></p>

<p>
Add allocators to regexes
</p>

<p><i>[
2010-10-24 Daniel adds:
]</i></p>


<blockquote><p>
Accepting <a href="https://wg21.link/n3171.pdf">n3171</a> would solve this issue.
</p></blockquote>

<p><i>[2011-03-22 Madrid]</i></p>

<p>Close 1396 as NAD Future.</p>

<p><i>[LEWG Kona 2017]</i></p>

<p>Recommend Open: Covered in LEWG9, P0269, which is in wording review.</p>

<p><i>[2020-07-17; status changed to Tentatively NAD in issue processing telecon]</i></p>

<p>
P0269R0 has been superseded by P1294R0.
Requested LEWG to confirm which version they forwarded to LWG.
In any case, this is a feature request, not a defect, and will be dealt with as a proposal not an issue.
</p>
<p><i>[2020-11-09 Status changed: Tentatively NAD &rarr; NAD.]</i></p>



<p><b>Rationale:</b></p><p>No consensus for a change at this time</p>

<p id="res-1396"><b>Proposed resolution:</b></p>





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