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    CWG Issue 1639</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="1639"></A><H4>1639.
  
<I>exception-specification</I>s and pointer/pointer-to-member expressions
</H4>
<B>Section: </B>14.5&#160; [<A href="https://wg21.link/except.spec">except.spec</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD4
 &#160;&#160;&#160;

 <B>Submitter: </B>Steve Adamczyk
 &#160;&#160;&#160;

 <B>Date: </B>2013-02-12<BR>


<P>[Moved to DR at the November, 2014 meeting.]</P>

<P>The current specification is not clear whether the
<I>exception-specification</I> for a function is propagated to the
result of taking its address.  For example:</P>

<PRE>
  template&lt;class T&gt; struct A {
    void f() noexcept(false) {}
    void g() noexcept(true) {}
  };

  int main() {
    if (noexcept((A&lt;short&gt;().*(&amp;A&lt;short&gt;::f))()))
      return 1;

    if (!noexcept((A&lt;long&gt;().*(&amp;A&lt;long&gt;::g))()))
      return 1;

     return 0;
  }
</PRE>

<P>There is implementation variance on whether <TT>main</TT> returns
0 or 1 for this example.  (It also appears that taking the address of
a member function of a class template requires instantiating its
<I>exception-specification</I>, but it is not clear whether the
Standard currently specifies this or not.)</P>

<P>(See also issues <A HREF="92.html">92</A> and
<A HREF="1351.html">1351</A>.)</P>

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

<P>This issue is resolved by the proposed resolution of
<A HREF="1351.html">issue 1351</A>.</P>

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