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    CWG Issue 539</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="539"></A><H4>539.
  
Constraints on <I>type-specifier-seq</I>
</H4>
<B>Section: </B>9.2.9&#160; [<A href="https://wg21.link/dcl.type">dcl.type</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD3
 &#160;&#160;&#160;

 <B>Submitter: </B>Mike Miller
 &#160;&#160;&#160;

 <B>Date: </B>5 October 2005<BR>


<P>[Voted into the WP at the February, 2012 meeting;
moved to DR at the October, 2012 meeting.]</P>

<P>The constraints on <I>type-specifier</I>s given in
9.2.9 [<A href="https://wg21.link/dcl.type">dcl.type</A>] paragraphs 2 and 3 (at most one
<I>type-specifier</I> except as specified, at least one
<I>type-specifier</I>, no redundant cv-qualifiers) are couched in
terms of <I>decl-specifier-seq</I>s and <I>declaration</I>s.  However,
they should also apply to constructs that are not syntactically
<I>declaration</I>s and that are defined to use
<I>type-specifier-seq</I>s, including 7.6.2.8 [<A href="https://wg21.link/expr.new">expr.new</A>],
8.8 [<A href="https://wg21.link/stmt.jump">stmt.jump</A>], 9.3.2 [<A href="https://wg21.link/dcl.name">dcl.name</A>], and
11.4.8.3 [<A href="https://wg21.link/class.conv.fct">class.conv.fct</A>].</P>

<P><B>Proposed resolution (August, 2011):</B></P>

<P>Change 9.2.9 [<A href="https://wg21.link/dcl.type#3">dcl.type</A>] paragraph 3 as follows:</P>

<BLOCKQUOTE>

<DEL>At</DEL> <INS>Except in a declaration of a constructor,
destructor, or conversion function, at</INS> least one
<I>type-specifier</I> that is not a <I>cv-qualifier</I> <DEL>is
required in a declaration unless it declares a constructor, destructor
or conversion function</DEL> <INS>shall appear in a complete
<I>type-specifier-seq</I> or a complete
<I>decl-specifier-seq</I></INS>.<SUP>92</SUP> A
<I>type-specifier-seq</I> shall not define...

</BLOCKQUOTE>

<P><I>(Note: paper N2546, voted into the Working Draft in February,
2008, addresses part of this issue.)</I></P>

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