[patch] Fix pr16247

[Eli Friedman]

On Tue, Jun 18, 2013 at 6:57 AM, Rafael Espíndola <
rafael.espindola at gmail.com> wrote:

> > Suppose overloading completely ignores whether a declaration is extern
> "C",
> > and suppose you have a hashtable which returns the extern "C" decl for a
> > given identifier.  After you conclude foo(int) overloads foo(), you look
> in
> > the hashtable and say "oops, there was already a declaration with that
> > name".  (I haven't really thought through whether this is a good idea.)
>
> The case I don't understand is
>
>
> extern "C" {
>   static void foo() { }
>   void foo(int x) {}
> }
>
> Overload in this proposal will decide that the second foo is an
> overload, we see that it is extern C, add it to the hash and now,
> where do we find the first foo? Note that it is *not* extern C
> according to the standard and our current implementation.
>

Ah... I see what you mean.  The answer is we don't. :)

-Eli
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