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    CWG Issue 1197</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="1197"></A><H4>1197.
  
Constexpr arrays
</H4>
<B>Section: </B>7.7&#160; [<A href="https://wg21.link/expr.const">expr.const</A>]
 &#160;&#160;&#160;

 <B>Status: </B>C++11
 &#160;&#160;&#160;

 <B>Submitter: </B>Jason Merrill
 &#160;&#160;&#160;

 <B>Date: </B>2010-09-08<BR>


<P>[Voted into the WP at the March, 2011 meeting as part of paper N3260.]</P>



<P>The requirement in 7.7 [<A href="https://wg21.link/expr.const">expr.const</A>] that a constant
expression cannot contain</P>

<UL><LI><P>an array-to-pointer conversion (7.3.3 [<A href="https://wg21.link/conv.array">conv.array</A>])
that is applied to a glvalue that does not designate an object with
static storage duration</P></LI></UL>

<P>effectively eliminates the use of automatic constexpr arrays such
as</P>

<PRE>
    void f() {
       constexpr int ar[] = { 1, 2 };
       constexpr int i = ar[1];
    }
</PRE>

<P>There does not seem to be a problem with this kind of usage.</P>

<P><B>Proposed resolution (February, 2011):</B></P>

<P>The proposed resolution will be submitted as a separate document.</P>

<BR><BR>
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