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<title>Issue 163: Return of gcount() after a call to gcount</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#Dup">Dup</a> status.</em></p>
<h3 id="163"><a href="lwg-closed.html#163">163</a>. Return of <code>gcount()</code> after a call to <code>gcount</code></h3>
<p><b>Section:</b> 31.7.5.4 <a href="https://wg21.link/istream.unformatted">[istream.unformatted]</a> <b>Status:</b> <a href="lwg-active.html#Dup">Dup</a>
 <b>Submitter:</b> Dietmar K&uuml;hl <b>Opened:</b> 1999-07-20 <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#istream.unformatted">issues</a> in [istream.unformatted].</p>
<p><b>View all issues with</b> <a href="lwg-status.html#Dup">Dup</a> status.</p>
<p><b>Duplicate of:</b> <a href="lwg-defects.html#60" title="What is a formatted input function? (Status: TC1)">60</a></p>
<p><b>Discussion:</b></p>
<p>It is not clear which functions are to be considered unformatted
input functions. As written, it seems that all functions in 31.7.5.4 <a href="https://wg21.link/istream.unformatted">[istream.unformatted]</a> are unformatted input functions. However, it does not
really make much sense to construct a sentry object for
<code>gcount()</code>, <code>sync()</code>, ... Also it is unclear what
happens to the <code>gcount()</code> if eg. <code>gcount()</code>,
<code>putback()</code>, <code>unget()</code>, or <code>sync()</code> is called:
These functions don't extract characters, some of them even
&quot;unextract&quot; a character. Should this still be reflected in
<code>gcount()</code>? Of course, it could be read as if after a call to
<code>gcount()</code> <code>gcount()</code> return <code>0</code> (the last
unformatted input function, <code>gcount()</code>, didn't extract any
character) and after a call to <code>putback()</code> <code>gcount()</code>
returns <code>-1</code> (the last unformatted input function
<code>putback()</code> did &quot;extract&quot; back into the
stream). Correspondingly for <code>unget()</code>. Is this what is
intended?  If so, this should be clarified. Otherwise, a corresponding
clarification should be used.</p>


<p><b>Rationale:</b></p>





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