https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83856
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
namespace std {
template <typename _Tp> _Tp declval();
template <class _E> class initializer_list {
_E *_M_len;
public:
unsigned long size;
_E begin();
};
template <typename, unsigned> struct array { void operator[](long); };
} // namespace std
template <class> struct simd {
static int size();
template <class F> simd(F, decltype(std::declval<F>()(0)) * = nullptr) {}
};
template <class V, class... F>
void test_tuples(std::initializer_list<std::array<float, 1>> data,
F... fun_pack) {
auto it = data.begin();
const int remaining = V::size();
[](...) {}((fun_pack([&](auto) { it[remaining]; }), 0)...);
}
void f() {
test_tuples<simd<float>>({}, [](simd<float>) {});
}
