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  1. template <typename T>
  2. class A;
  3.  
  4.  
  5. template <class T>
  6. class A
  7. {
  8.    template<typename U>	
  9.    friend A<U> f(A<U> a);
  10. };
  11.  
  12. template <class T>
  13. A<T> f(A<T> a)
  14. {
  15. 	return A<T>();
  16. }
  17.  
  18.  
  19. int main()
  20. {
  21.  
  22.    A<int> a, b;
  23.    b = f(a);
  24.  
  25.    return 0;
  26. }
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https://ideone.com/ohWqhH
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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