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    CWG Issue 2849</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="2849"></A><H4>2849.
  
Parameter objects are not temporary objects
</H4>
<B>Section: </B>6.8.7&#160; [<A href="https://wg21.link/class.temporary">class.temporary</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>Brian Bi
 &#160;&#160;&#160;

 <B>Date: </B>2024-01-20<BR>


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

<P>(From submission
<A HREF="https://github.com/cplusplus/CWG/issues/490">#490</A>.)</P>

<P>Parameter objects are not temporary objects, according to
6.8.7 [<A href="https://wg21.link/class.temporary#1">class.temporary</A>] paragraph 1.  An exception hinting at this in
6.8.7 [<A href="https://wg21.link/class.temporary#7">class.temporary</A>] paragraph 7 should be removed.</P>

<P><B>Proposed resolution (approved by CWG 2024-02-02):</B></P>

<P>Change in 6.8.7 [<A href="https://wg21.link/class.temporary#7">class.temporary</A>] paragraph 7 as follows:</P>

<BLOCKQUOTE>

The fourth context is when a temporary object <DEL>other than a
function parameter object</DEL> is created in
the <I>for-range-initializer</I> of a range-based for statement. If
such a temporary object would otherwise be destroyed at the end of
the <I>for-range-initializer</I> full-expression, the object persists
for the lifetime of the reference initialized by
the <I>for-range-initializer</I>.

</BLOCKQUOTE>

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