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    CWG Issue 1649</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="1649"></A><H4>1649.
  
Error in the syntax of <I>mem-initializer-list</I>
</H4>
<B>Section: </B>11.9.3&#160; [<A href="https://wg21.link/class.base.init">class.base.init</A>]
 &#160;&#160;&#160;

 <B>Status: </B>C++14
 &#160;&#160;&#160;

 <B>Submitter: </B>Daniel Kr&#252;gler
 &#160;&#160;&#160;

 <B>Date: </B>2013-04-13<BR>


<P>[Moved to DR at the September, 2013 meeting.]</P>



<P>The grammar in 11.9.3 [<A href="https://wg21.link/class.base.init#1">class.base.init</A>] paragraph 1
for <I>mem-initializer-list</I> is incorrect:</P>

<UL>
<I>mem-initializer-list:</I>
<UL>
<I>mem-initializer</I> <TT>...</TT><I><SUB>opt</SUB></I><BR>
<I>mem-initializer</I> <TT>,</TT> <I>mem-initializer-list</I> <TT>...</TT><I><SUB>opt</SUB></I>

</UL>

</UL>

<P>The ellipsis in the second production should be on
<I>mem-initializer</I>, not on <I>mem-initializer-list</I>.</P>

<P><B>Proposed resolution (August, 2013):</B></P>

<P>Change the grammar in 11.9.3 [<A href="https://wg21.link/class.base.init#1">class.base.init</A>] paragraph 1 as
follows:</P>

<UL>
<I>mem-initializer-list:</I>
<UL>
<I>mem-initializer</I> <TT>...</TT><SUB><I>opt</I></SUB><BR>
<I>mem-initializer</I> <INS><TT>...</TT><SUB><I>opt</I></SUB></INS> <TT>,</TT> <I>mem-initializer-list</I> <DEL><TT>...</TT><SUB><I>opt</I></SUB></DEL>
</UL>
</UL>

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