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    CWG Issue 274</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="274"></A><H4>274.
  
Cv-qualification and char-alias access to out-of-lifetime objects
</H4>
<B>Section: </B>6.8.4&#160; [<A href="https://wg21.link/basic.life">basic.life</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD1
 &#160;&#160;&#160;

 <B>Submitter: </B>Mike Miller
 &#160;&#160;&#160;

 <B>Date: </B>14 Mar 2001<BR>


<P>[Voted into WP at April 2003 meeting.]</P>

<P>The wording in 6.8.4 [<A href="https://wg21.link/basic.life#6">basic.life</A>] paragraph 6 allows an
lvalue designating an out-of-lifetime object to be used as the
operand of a <TT>static_cast</TT> only if the conversion is
ultimately to "<TT>char&amp;</TT>" or "<TT>unsigned char&amp;</TT>".
This description excludes the possibility of using a cv-qualified
version of these types for no apparent reason.</P>

<P><B>Notes on 04/01 meeting:</B></P>

<P>The wording should be changed to allow cv-qualified char
types.</P>

<P><B>Proposed resolution (04/01):</B></P>

<P>In 6.8.4 [<A href="https://wg21.link/basic.life#6">basic.life</A>] paragraph 6 change the third bullet:
<UL>
<LI>
the lvalue is used as the operand of a <TT>static_cast</TT>
(7.6.1.9 [<A href="https://wg21.link/expr.static.cast">expr.static.cast</A>])
(except when the conversion is ultimately to <TT>char&amp;</TT> or <TT>unsigned
char&amp;</TT>), or
</LI>
</UL>
to read:
<UL>
<LI>
the lvalue is used as the operand of a <TT>static_cast</TT>
(7.6.1.9 [<A href="https://wg21.link/expr.static.cast">expr.static.cast</A>])
except when the conversion is ultimately to <TT><I>cv</I> char&amp;</TT> or
<TT><I>cv</I> unsigned char&amp;</TT>, or
</LI>
</UL>
</P>

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