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// PR c++/79205
// { dg-do compile { target c++11 } }
// { dg-options "" }
template <unsigned long, typename...> struct B;
template <unsigned long I, typename H> struct B<I, H> { int b; };
template <typename... E> struct C { B<0, E...> c; C (C &) = default; C (C &&); };
template <typename> struct tuple_size;
template <> struct tuple_size<C<int>> { static constexpr int value = 1; };
template <int, typename> struct tuple_element;
template <typename H, typename... T>
struct tuple_element<0, C<H, T...>> { typedef int type; };
template <int, typename... E>
int &&get (C<E...> &&);
int
foo (C<int> t)
{
auto[x0] = t; // { dg-warning "decomposition declaration only available with" "" { target c++14_down } }
return x0;
}
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