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    CWG Issue 306</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="306"></A><H4>306.
  
Ambiguity by class name injection
</H4>
<B>Section: </B>6.5.2&#160; [<A href="https://wg21.link/class.member.lookup">class.member.lookup</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>Clark Nelson
 &#160;&#160;&#160;

 <B>Date: </B>19 Jul 2001<BR>


<P>[Voted into WP at April 2005 meeting.]</P>

<P>Is the following well-formed?
<PRE>
    struct A {
        struct B { };
    };
    struct C : public A, public A::B {
        B *p;
    };
</PRE>
The lookup of <TT>B</TT> finds both the struct <TT>B</TT> in <TT>A</TT>
and the injected <TT>B</TT> from the <TT>A::B</TT> base class.
Are they the same thing?  Does the standard say so?</P>

<P>What if a struct is found along one path and a typedef to that
struct is found along another path?  That should probably be valid,
but does the standard say so?</P>

<P>This is resolved by <A HREF="39.html">issue 39</A>
</P>

<P>February 2004: Moved back to "Review" status because
<A HREF="39.html">issue 39</A> was moved back to "Review".</P>
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