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<title>Issue 2787: &sect;[fs.file_status.cons] doesn't match class definition</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#C++17">C++17</a> status.</em></p>
<h3 id="2787"><a href="lwg-defects.html#2787">2787</a>. &sect;[fs.file_status.cons] doesn't match class definition</h3>
<p><b>Section:</b> 31.12.9 <a href="https://wg21.link/fs.class.file.status">[fs.class.file.status]</a>, 31.12.9.2 <a href="https://wg21.link/fs.file.status.cons">[fs.file.status.cons]</a> <b>Status:</b> <a href="lwg-active.html#C++17">C++17</a>
 <b>Submitter:</b> Tim Song <b>Opened:</b> 2016-10-21 <b>Last modified:</b> 2021-06-06</p>
<p><b>Priority: </b>0
</p>
<p><b>View all issues with</b> <a href="lwg-status.html#C++17">C++17</a> status.</p>
<p><b>Discussion:</b></p>
<p> [fs.class.file_status] depicts:</p>
<blockquote><pre>
explicit file_status(file_type ft = file_type::none, perms prms = perms::unknown) noexcept;
</pre></blockquote>
<p>
while  [fs.file_status.cons] describes two constructors:
</p>
<blockquote><pre>
explicit file_status() noexcept;
explicit file_status(file_type ft, perms prms = perms::unknown) noexcept;
</pre></blockquote>
<p>
It's also not clear why the default constructor needs to be explicit. Unlike tag types, there doesn't seem to be
a compelling reason to disallow constructing a <code>file_status</code> without naming the type.
</p>
<p><i>[2016-11-12, Issaquah]</i></p>

<p>Sat AM: Priority 0; move to Ready</p>


<p id="res-2787"><b>Proposed resolution:</b></p>
<p>This wording is relative to N4606.</p>

<ol>
<li><p>Edit  [fs.class.file_status] as indicated:</p>

<blockquote><pre>
class file_status {
public:
  // 27.10.11.1, constructors and destructor:
  <ins>file_status() noexcept : file_status(file_type::none) {}</ins>
  explicit file_status(file_type ft <del>= file_type::none</del>,
                       perms prms = perms::unknown) noexcept;
  [&hellip;]
};
</pre></blockquote>
</li>

<li><p>Edit  [fs.file_status.cons] as indicated:</p>

<blockquote>
<pre>
<del>explicit file_status() noexcept;</del>
</pre>
<blockquote>
<p>
<del>-1- <i>Postconditions:</i> <code>type() == file_type::none</code> and <code>permissions() == perms::unknown</code>.</del>
</p>
</blockquote>
</blockquote>
</li>
</ol>





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