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    CWG Issue 2811</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="2811"></A><H4>2811.
  
Clarify "use" of main
</H4>
<B>Section: </B>6.10.3.1&#160; [<A href="https://wg21.link/basic.start.main">basic.start.main</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD7
 &#160;&#160;&#160;

 <B>Submitter: </B>Jan Schultke
 &#160;&#160;&#160;

 <B>Date: </B>2023-10-12<BR>


<P>[Accepted as a DR at the March, 2024 meeting.]</P>

<P>Subclause 6.10.3.1 [<A href="https://wg21.link/basic.start.main#3">basic.start.main</A>] paragraph 3 specifies:</P>

<BLOCKQUOTE>

The function main shall not be used within a program. ...

</BLOCKQUOTE>

<P>It is unclear what "use" means. N3214 excluded this appearance from
the clarifications of "use" that were turned into "odr-use".  For
example, it is unclear whether <TT>decltype(main)</TT> is allowed or
not.</P>

<P><B>CWG 2023-12-01</B></P>

<P>CWG favored to ban any mention of <TT>main</TT>.</P>

<P><B>Proposed resolution (approved by CWG 2023-12-15):</B></P>

<P>Change in 6.10.3.1 [<A href="https://wg21.link/basic.start.main#3">basic.start.main</A>] paragraph 3 as follows:</P>

<BLOCKQUOTE>

The function <TT>main</TT> shall not be <DEL>used within a
program</DEL> <INS>named by an expression</INS>. ...

</BLOCKQUOTE>

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