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    CWG Issue 2359</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="2359"></A><H4>2359.
  
Unintended copy initialization with designated initializers
</H4>
<B>Section: </B>9.5.2&#160; [<A href="https://wg21.link/dcl.init.aggr">dcl.init.aggr</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD5
 &#160;&#160;&#160;

 <B>Submitter: </B>Zhihao Yuan
 &#160;&#160;&#160;

 <B>Date: </B>2017-10-06<BR>


<P>[Accepted at the June, 2018 (Rapperswil) meeting.]</P>

<P>According to 9.5.2 [<A href="https://wg21.link/dcl.init.aggr#4.2">dcl.init.aggr</A>] bullet 4.2,</P>

<BLOCKQUOTE>

Otherwise, the element is copy-initialized from the
corresponding <I>initializer-clause</I> or
the <I>brace-or-equal-initializer</I> of the
corresponding <I>designated-initializer-clause</I>.

</BLOCKQUOTE>

<P>This sounds as if the initialization performed by a designated
initializer is always copy-initialization. However, it was intended
that the kind of initialization match the form of the initializer,
i.e., a <I>designated-initializer-clause</I> of the form</P>

<PRE>
  { .x{3} }
</PRE>

<P>was intended to perform direct-initialization.</P>

<P><B>Proposed resolution, April, 2018:</B></P>

<P>Change 9.5.2 [<A href="https://wg21.link/dcl.init.aggr#4.2">dcl.init.aggr</A>] bullet 4.2 as follows:</P>

<BLOCKQUOTE>

Otherwise, the element is copy-initialized from the
corresponding <I>initializer-clause</I> or <INS>is initialized with</INS>
the <I>brace-or-equal-initializer</I> of the
corresponding <I>designated-initializer-clause</I>.

</BLOCKQUOTE>

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