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// PR c++/33239
struct null_type;
template<typename T1, typename T2>
struct tuple_impl
{
template<typename U>
struct append
{
typedef tuple_impl<U, null_type> type;
};
int data;
};
template<typename T1>
class tuple
: public tuple_impl<T1, null_type>::template append<T1>::type
{
using tuple_impl<T1, null_type>::template append<T1>::type::data;
};
tuple<int> my_tuple;
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