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    CWG Issue 410</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="410"></A><H4>410.
  
Paragraph missed in changes for issue 166
</H4>
<B>Section: </B>13.7.5&#160; [<A href="https://wg21.link/temp.friend">temp.friend</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>John Spicer
 &#160;&#160;&#160;

 <B>Date: </B>18 Apr 2003<BR>


<P>[Voted into WP at October 2004 meeting.]</P>

<P>13.7.5 [<A href="https://wg21.link/temp.friend#2">temp.friend</A>] paragraph 2 was overlooked when the
changes for <A HREF="166.html">issue 166</A> were made.</P>

<P>The friend declaration of f&lt;&gt;(int) is now valid.</P>

<BLOCKQUOTE>
A  friend  function declaration that is not a template declaration and
in which the name of the friend is an  unqualified <I>template-id</I>  shall
refer  to  a  specialization  of  a  function template declared in the
nearest enclosing namespace scope.  [<I>Example:</I>
<PRE>
  namespace N {
          template &lt;class T&gt; void f(T);
          void g(int);
          namespace M {
                  template &lt;class T&gt; void h(T);
                  template &lt;class T&gt; void i(T);
                  struct A {
                          friend void f&lt;&gt;(int);   // ill-formed - N::f
                          friend void h&lt;&gt;(int);   // OK - M::h
                          friend void g(int);     // OK - new decl of M::g
                          template &lt;class T&gt; void i(T);
                          friend void i&lt;&gt;(int);   // ill-formed - A::i
                  };
          }
  }
</PRE>
<I>--end example</I>]
</BLOCKQUOTE>

<P><B>Proposed Resolution (October 2003):</B></P>

<P> Remove 13.7.5 [<A href="https://wg21.link/temp.friend#2">temp.friend</A>] paragraph 2:</P>

<BLOCKQUOTE>
A  friend  function declaration that is not a template declaration and
in which the name of the friend is an  unqualified <I>template-id</I>  shall
refer  to  a  specialization  of  a  function template declared in the
nearest enclosing namespace scope.  [<I>Example:</I>
<PRE>
  namespace N {
          template &lt;class T&gt; void f(T);
          void g(int);
          namespace M {
                  template &lt;class T&gt; void h(T);
                  template &lt;class T&gt; void i(T);
                  struct A {
                          friend void f&lt;&gt;(int);   // ill-formed - N::f
                          friend void h&lt;&gt;(int);   // OK - M::h
                          friend void g(int);     // OK - new decl of M::g
                          template &lt;class T&gt; void i(T);
                          friend void i&lt;&gt;(int);   // ill-formed - A::i
                  };
          }
  }
</PRE>
<I>--end example</I>]
</BLOCKQUOTE>

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