#include <tuple>                                                                 
 
struct Fixture                                                                   
{                                                                                
    template <typename T>                                                        
    struct Unpack                                                                
    {                                                                            
        static constexpr const int value = 5;                                    
    };                                                                           
 
    template <typename... T>                                                     
    struct Y                                                                     
    {                                                                            
        Y()                                                                      
        :                                                                        
            tup(Unpack<T>::value...)                                             
        {                                                                        
        }                                                                        
 
        std::tuple<T...> tup;                                                    
    };                                                                           
 
    Y<int, int, int> y;                                                          
};
 
int main() { }

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