[Bug c++/61636] generic lambda "cannot call member function without object"

["tower120 at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61636

--- Comment #3 from tower120 <tower120 at gmail dot com> ---
I found that as only I pass *this as parameter and then call functions from it,
it works ok. But it have to be auto:

        /// This work
        std::cout << if_else(do_first,
            *this,
            [&](auto self){ return self.fn1(data); },
            [&](auto self){ return self.fn2(data); }
        ) << '\n';


        /// This not
        std::cout << if_else(do_first,
            *this,
            [&](Test self){ return self.fn1(data); },
            [&](Test self){ return self.fn2(data); }
        ) << '\n';

http://coliru.stacked-crooked.com/a/272a5e0b8089a5c4

And what even more strange, it work if only one lambda is auto:

        std::cout << if_else(do_first,
            *this,
            [&](auto self){ return self.fn1(data); },
            [&](Test self){ return self.fn2(data); }          // ???
        ) << '\n';

http://coliru.stacked-crooked.com/a/ed45a402a6c11d63