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    CWG Issue 2785</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="2785"></A><H4>2785.
  
Type-dependence of <I>requires-expression</I>
</H4>
<B>Section: </B>13.8.3.3&#160; [<A href="https://wg21.link/temp.dep.expr">temp.dep.expr</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>CWG
 &#160;&#160;&#160;

 <B>Date: </B>2023-07-17<BR>


<P>[Accepted as a DR at the November, 2023 meeting.]</P>

<P>(Split off from <A HREF="2774.html">issue 2774</A>.)</P>

<P>Subclause 13.8.3.3 [<A href="https://wg21.link/temp.dep.expr">temp.dep.expr</A>] is lacking specifiation
about the type-dependence of <I>requires-expression</I>s.</P>

<P><B>Proposed resolution (approved by CWG 2023-08-25):</B></P>

<P>Change in 13.8.3.3 [<A href="https://wg21.link/temp.dep.expr#4">temp.dep.expr</A>] paragraph 4 as follows:</P>

<BLOCKQUOTE>

Expressions of the following forms are never type-dependent (because
the type of the expression cannot be dependent):

<PRE>
  ...
  noexcept ( <I>expression</I> )
  <INS><I>requires-expression</I></INS>
</PRE>

</BLOCKQUOTE>

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