Re: [boost] [result_of] now uses decltype on release branch

Subject: Re: [boost] [result_of] now uses decltype on release branch
From: Michel Morin (mimomorin_at_[hidden])
Date: 2012-09-04 11:23:09

Joel de Guzman wrote:
> Ok I fixed the fusion::invoke test. Tricky!
>
> That also fixes the first test from Ticket #6915. The second, OTOH,
> I think is an error.

I didn't have a closer look at #6915, so I cannot
answer about the ticket (sorry!).
But the following test case still fails:
(Test case attached.)

Michel Morin wrote:
> Here is a minimal test case:
>
>     #include <boost/fusion/include/invoke.hpp>
>     #include <boost/fusion/include/vector.hpp>
>
>     struct F {
>         typedef void result_type;
>         void operator()(int&) const {}
>     };
>
>     int main (int argc, char* argv[])
>     {
>         boost::fusion::vector<int> v(1);
>         // Error when decltype-based result_of is used;
>         // trying to instantiate result_of<F(const int&)>
>         boost::fusion::invoke(F(), v);
>
>         return 0;
>     }

Regards,
Michel