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    CWG Issue 1035</TITLE>
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<P><EM>This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21
  Core Issues List revision 118b.
  See http://www.open-std.org/jtc1/sc22/wg21/ for the official
  list.</EM></P>
<P>2025-09-28</P>
<HR>
<A NAME="1035"></A><H4>1035.
  
Omitted and required <I>decl-specifier</I>s
</H4>
<B>Section: </B>11.4&#160; [<A href="https://wg21.link/class.mem">class.mem</A>]
 &#160;&#160;&#160;

 <B>Status: </B>C++11
 &#160;&#160;&#160;

 <B>Submitter: </B>Daveed Vandevoorde
 &#160;&#160;&#160;

 <B>Date: </B>2010-02-25<BR>


<P>[Voted into the WP at the March, 2011 meeting as part of paper N3262.]</P>

<P>According to 11.4 [<A href="https://wg21.link/class.mem#6">class.mem</A>] paragraph 6,</P>

<BLOCKQUOTE>

 The <I>decl-specifier-seq</I> is omitted in constructor, destructor,
 and conversion function declarations only.

</BLOCKQUOTE>

<P>This is incorrect, as some <I>decl-specifier</I>s (<TT>explicit</TT>,
<TT>virtual</TT>, <TT>inline</TT>, <TT>constexpr</TT>) are permitted
in these declarations.  Conversely, C.7.6 [<A href="https://wg21.link/diff.dcl">diff.dcl</A>],
&#8220;Banning implicit int,&#8221; says,</P>

<BLOCKQUOTE>

In C++ a <I>decl-specifier-seq</I> must contain a <I>type-specifier</I>.

</BLOCKQUOTE>

<P>This is also incorrect for these declarations.</P>

<P><B>Proposed resolution (February, 2011) [SUPERSEDED]:</B></P>

<OL>
<LI><P>Change 11.4 [<A href="https://wg21.link/class.mem#7">class.mem</A>] paragraph 7 as follows:</P></LI>

<BLOCKQUOTE>

The <I>decl-specifier-seq</I> <DEL>is</DEL> <INS>may be</INS> omitted
in constructor, destructor, and conversion function declarations
only<INS>; when declaring another kind of member the
<I>decl-specifier-seq</I> shall contain a <I>type-specifier</I> that
is not a <I>cv-qualifier</I></INS>.  The <I>member-declarator-list</I>
can be omitted...

</BLOCKQUOTE>

<LI><P>Change C.7.6 [<A href="https://wg21.link/diff.dcl">diff.dcl</A>], &#8220;Banning implicit
int,&#8221; as follows:</P></LI>

<BLOCKQUOTE>

In C++ a <I>decl-specifier-seq</I> must contain a
<I>type-specifier</I><INS>, unless it is followed by a declarator for
a constructor, a destructor, or a conversion function</INS>.  In the
following example...

</BLOCKQUOTE>

</OL>

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