https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110824
--- Comment #2 from Denis Yaroshevskiy <denis.yaroshevskij at gmail dot com> ---
FYI, this is my workaround:
```
template<typename Selector> struct just_shuffle_test_selector
{
Selector sel;
template<typename... Args>
auto operator()(Args... args) const
requires(std::invocable<Selector, Args...>)
{
auto r = sel(args...);
if constexpr( !eve::detail::matched_shuffle<decltype(r)> )
{
return kumi::tuple {r, eve::index<-1>};
}
else return kumi::tuple {r, eve::index<0>};
}
};
template<typename Selector>
just_shuffle_test_selector(Selector) -> just_shuffle_test_selector<Selector>;
template<typename WrappedShuffleV2> struct just_shuffle_test_
{
WrappedShuffleV2 sh2;
template<typename... Args>
auto operator()(Args... args) const
requires(std::invocable<WrappedShuffleV2, Args...>)
{
return get<0>(sh2(args...));
}
};
template<typename WrappedShuffleV2>
just_shuffle_test_(WrappedShuffleV2) -> just_shuffle_test_<WrappedShuffleV2>;
template<typename Selector>
constexpr auto
just_shuffle_test(Selector selector)
{
return
just_shuffle_test_{eve::detail::make_shuffle_v2(just_shuffle_test_selector{selector})};
}
```
