[Bug c++/69020] wrong ADL for attribute cleanup functions

["egallager at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69020

Eric Gallager <egallager at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |diagnostic
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2017-08-25
                 CC|                            |egallager at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #3 from Eric Gallager <egallager at gcc dot gnu.org> ---
(In reply to Martin Sebor from comment #2)
> I agree, but as long as the feature is exposed to users it seems that it
> should work in unsurprising ways (i.e., follow the C++ lookup rules). 
> Otherwise, if we don't want C++ programmers to use it, a possible simple fix
> is to reject the attribute in C++.  Alternatively, we could reject it when
> the referenced function is dependent to keep it working in the cases we know
> work correctly and prevent unexpected results in the others.  Or we can fix
> it and issue a warning suggesting to use a destructor.  I'm fine with any of
> these solutions and I'm happy to work up a patch (in fact, I already started
> working on it hoping for a simple fix).

Confirmed, I'd prefer the solution of issuing a warning