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<title>Issue 3676: Name of locale composed using std::locale::none</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#Resolved">Resolved</a> status.</em></p>
<h3 id="3676"><a href="lwg-defects.html#3676">3676</a>. Name of locale composed using <code>std::locale::none</code></h3>
<p><b>Section:</b> 28.3.3.1.3 <a href="https://wg21.link/locale.cons">[locale.cons]</a> <b>Status:</b> <a href="lwg-active.html#Resolved">Resolved</a>
 <b>Submitter:</b> Hubert Tong <b>Opened:</b> 2022-02-14 <b>Last modified:</b> 2023-03-22</p>
<p><b>Priority: </b>3
</p>
<p><b>View all other</b> <a href="lwg-index.html#locale.cons">issues</a> in [locale.cons].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#Resolved">Resolved</a> status.</p>
<p><b>Discussion:</b></p>
<p>
For
</p>
<blockquote><pre>
locale(const locale&amp; other, const locale&amp; one, category cats);
</pre></blockquote>
<p>
the <i>Remarks</i> say:
</p>
<blockquote><p>
The resulting locale has a name if and only if the first two arguments have names.
</p></blockquote>
<p>
The case where <code>cats</code> is <code>locale::none</code> seems very similar to the issue that 
LWG <a href="lwg-defects.html#2295" title="Locale name when the provided Facet is a nullptr (Status: C++23)">2295</a><sup><a href="https://cplusplus.github.io/LWG/issue2295" title="Latest snapshot">(i)</a></sup> reports with the case where the provided facet pointer is <code>nullptr</code>.
That is, if no composition is actually occurring, then using the name of <code>other</code> 
seems to be reasonable.
<p/>
It would help consistency if both cases are treated the same way.
<p/>
Note: The <code>locale::all</code> case should not imply using the name of <code>one</code>. 
<code>locale::all</code> does not necessarily cover all of the C locale categories on a platform.
</p>

<p><i>[2022-03-04; Reflector poll]</i></p>

<p>
Set priority to 3 after reflector poll.
</p>

<p><i>[2022-11-01; Jonathan comments]</i></p>

<p>The proposed resolution of <a href="lwg-defects.html#2295" title="Locale name when the provided Facet is a nullptr (Status: C++23)">2295</a><sup><a href="https://cplusplus.github.io/LWG/issue2295" title="Latest snapshot">(i)</a></sup> would resolve this too.</p>

<p><i>[2023-03-22 LWG 2295 was approved in Issaquah. Status changed: New &rarr; Resolved.]</i></p>



<p id="res-3676"><b>Proposed resolution:</b></p>





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