Incorrect (and unnecessary?) fwd declaration in fusion/adapted/std_tuple/tag_of.hpp

[Dave Steffen <dave.steffen@…>]

In fusion/adapted/std_tuple/tag_of.hpp we find:

#include <tuple>

namespace std {

template <typename... Elements> class tuple;

}

Mailing list discussion at gmane.comp.lib.boost.devel/233308

As Mathias Gaunard points out, this could conflict with existing library definitions that are not C++11 aware.

Also, as far as I can tell, it's redundant. I recommend that it just be removed.

[Joel de Guzman]

FYI, this has already been fixed some months ago. Yes, it is wrong and it is redundant.