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template<typename T>
typename std::enable_if<std::is_pointer<T>::value>::type
cuFreeAux(const char* file, int line, const char* func_name, T& ptr)  noexcept {
    using R    = typename xlib::remove_const_ptr<T>::type;
    auto& ptr1 = const_cast<R&>(ptr);
   //Issue: The following two lines need to be switched
    ptr1 = nullptr;
   cudaErrorHandler(cudaFree(ptr1), "cudaFree", file, line, func_name);
}

178 template<typename... TArgs> 
179 void AoS<TArgs...>::initialize(const void* (&array)[sizeof...(TArgs)], 
180                                int num_items) noexcept { 
181     _num_items = num_items; 
182     _h_ptr     = new AoSData<TArgs...>[num_items]; 
183     for (auto i = 0; i < num_items; i++) 
184         _h_ptr[i] = AoSData<TArgs...>(array, i); 
185     cuMalloc(_d_ptr_, num_items); //Issue: _d_ptr_ should have been freed before allocating 
186     cuMemcpyToDevice(_h_ptr, num_items, _d_ptr); 
187 }