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<title>Issue 831: wrong type for not_eof()</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_Editorial">NAD Editorial</a> status.</em></p>
<h3 id="831"><a href="lwg-closed.html#831">831</a>. wrong type for not_eof()</h3>
<p><b>Section:</b> 27.2.4 <a href="https://wg21.link/char.traits.specializations">[char.traits.specializations]</a> <b>Status:</b> <a href="lwg-active.html#NAD_Editorial">NAD Editorial</a>
 <b>Submitter:</b> Dietmar K&#252;hl <b>Opened:</b> 2008-04-23 <b>Last modified:</b> 2016-01-28</p>
<p><b>Priority: </b>Not Prioritized
</p>
<p><b>View all other</b> <a href="lwg-index.html#char.traits.specializations">issues</a> in [char.traits.specializations].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#NAD Editorial">NAD Editorial</a> status.</p>
<p><b>Discussion:</b></p>
<p>
  In Table 56 (Traits requirements) the <code>not_eof()</code> member function
  is using an argument of type <i>e</i> which denotes an object of
  type <code>X::int_type</code>. However, the specializations in
  27.2.4 <a href="https://wg21.link/char.traits.specializations">[char.traits.specializations]</a> all use <code>char_type</code>.
  This would effectively mean that the argument type actually can't
  represent EOF in the first place. I'm pretty sure that the type used
  to be <code>int_type</code> which is quite obviously the only sensible
  argument.
</p>
<p>
  This issue is close to being editorial. I suspect that the proposal
  changing this section to include the specializations for <code>char16_t</code>
  and <code>char32_t</code> accidentally used the wrong type.
</p>


<p id="res-831"><b>Proposed resolution:</b></p>
<p>
  In 27.2.4.2 <a href="https://wg21.link/char.traits.specializations.char">[char.traits.specializations.char]</a>,
   [char.traits.specializations.char16_t],
   [char.traits.specializations.char32_t], and
   [char.traits.specializations.wchar_t] correct the
  argument type from <code>char_type</code> to <code>int_type</code>.
</p>


<p><b>Rationale:</b></p><p>
Already fixed in WP.
</p>




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