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    CWG Issue 2824</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="2824"></A><H4>2824.
  
Copy-initialization of arrays
</H4>
<B>Section: </B>9.5.1&#160; [<A href="https://wg21.link/dcl.init.general">dcl.init.general</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>Anoop Rana
 &#160;&#160;&#160;

 <B>Date: </B>2023-11-06<BR>


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

<P>Consider:</P>

<PRE>
  std::string arr[] = "some string";
</PRE>

<P>Prior to the application of paper P0960R3 (Allow initializing
aggregates from a parenthesized list of values), this was ill-formed,
but now it is well-formed.  However, the specification talks about
an <I>expression-list</I> as part of the initializer, which does not
exist in this case.</P>

<P><B>Proposed resolution (approved by CWG 2023-11-07):</B></P>

<P>Change in 9.5.1 [<A href="https://wg21.link/dcl.init.general#16.5">dcl.init.general</A>] bullet 16.5 as follows:</P>

<BLOCKQUOTE>

Otherwise, if the destination type is an array, the object is
initialized as follows. <INS>The <I>initializer</I> shall be of the
form <TT>(</TT> <I>expression-list</I> <TT>)</TT>.</INS> Let x1 , . . . , xk
be the elements of the <I>expression-list</I>. If the destination type
is an array of unknown bound, it is defined as having k elements. Let
n denote the array size after this potential adjustment. If k is
greater than n, the program is ill-formed. Otherwise, ...

</BLOCKQUOTE>
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