<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<TITLE>
    CWG Issue 2416</TITLE>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<STYLE TYPE="text/css">
  INS { text-decoration:none; font-weight:bold; background-color:#A0FFA0 }
  .INS { text-decoration:none; background-color:#D0FFD0 }
  DEL { text-decoration:line-through; background-color:#FFA0A0 }
  .DEL { text-decoration:line-through; background-color: #FFD0D0 }
  @media (prefers-color-scheme: dark) {
    HTML { background-color:#202020; color:#f0f0f0; }
    A { color:#5bc0ff; }
    A:visited { color:#c6a8ff; }
    A:hover, a:focus { color:#afd7ff; }
    INS { background-color:#033a16; color:#aff5b4; }
    .INS { background-color: #033a16; }
    DEL { background-color:#67060c; color:#ffdcd7; }
    .DEL { background-color:#67060c; }
  }
  SPAN.cmnt { font-family:Times; font-style:italic }
</STYLE>
</HEAD>
<BODY>
<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="2416"></A><H4>2416.
  
Explicit specializations vs <TT>constexpr</TT> and <TT>consteval</TT>
</H4>
<B>Section: </B>13.9.4&#160; [<A href="https://wg21.link/temp.expl.spec">temp.expl.spec</A>]
 &#160;&#160;&#160;

 <B>Status: </B>C++20
 &#160;&#160;&#160;

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

 <B>Date: </B>2019-06-07<BR>


<P>[Accepted as a DR at the November, 2019 meeting.]</P>

<P>According to 13.9.4 [<A href="https://wg21.link/temp.expl.spec#13">temp.expl.spec</A>] paragraph 13,</P>

<BLOCKQUOTE>

An explicit specialization of a function or variable
template is inline only if it is declared with
the <TT>inline</TT> specifier or defined as deleted, and
independently of whether its function or variable template
is inline.

</BLOCKQUOTE>

<P>The current wording does not specify the status of explicit
specializations of <TT>constexpr</TT> and <TT>consteval</TT>
function templates and members of class templates. Should a
similar rule apply in those cases?</P>

<P><B>Proposed resolution (November, 2019):</B></P>

<P>Change 13.9.4 [<A href="https://wg21.link/temp.expl.spec#14">temp.expl.spec</A>] paragraph 14 as follows:</P>

<BLOCKQUOTE>

<DEL>An explicit specialization of a function or variable
template is inline only if it is declared with
the <TT>inline</TT> specifier or defined as deleted, and
independently of whether its function or variable template
is inline.</DEL> <INS>The inline, constexpr, and consteval
properties of an explicit specialization of a function or
variable template are determined by the explicit
specialization and are independent of those properties of
the template.</INS> [<I>Example:</I>...

</BLOCKQUOTE>

<BR><BR>
</BODY>
</HTML>
