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<title>Issue 429: typo in basic_ios::clear(iostate)</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="429"><a href="lwg-closed.html#429">429</a>. typo in basic_ios::clear(iostate)</h3>
<p><b>Section:</b> 31.5.4.4 <a href="https://wg21.link/iostate.flags">[iostate.flags]</a> <b>Status:</b> <a href="lwg-active.html#Dup">Dup</a>
 <b>Submitter:</b> Martin Sebor <b>Opened:</b> 2003-09-18 <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#iostate.flags">issues</a> in [iostate.flags].</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#412" title="Typo in 27.4.4.3 (Status: CD1)">412</a></p>
<p><b>Discussion:</b></p>
        <p>

The Effects clause in 27.4.4.3, p5 describing the effects of a call to
the ios_base member function clear(iostate state) says that the function
only throws if the respective bits are already set prior to the function
call. That's obviously not the intent. If it was, a call to clear(badbit)
on an object for which (rdstate() == goodbit &amp;&amp; exceptions() == badbit)
holds would not result in an exception being thrown.

        </p>
    
    <p id="res-429"><b>Proposed resolution:</b></p>
        <p>

The text ought to be changed from
<br/>

"If (rdstate() &amp; exceptions()) == 0, returns. ..."
<br/>

to
<br/>

"If (state &amp; exceptions()) == 0, returns. ..."
        </p>


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






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