fork download
copy 
  1. template <class T> struct B;
  2.  
  3. template <class T> B<T> operator+(const B<T>&);
  4.  
  5. template <class T>
  6. struct A { 
  7.    friend B<T> operator+<T>(const B<T>&);
  8. };
  9.  
  10. template <class T>
  11. struct B
  12. {
  13.    B() {}
  14.    B(const A<T>&) {}
  15.    friend B operator+<T>(const B&);
  16. };
  17.  
  18. template <class T> B<T> operator+(const B<T>&)
  19. {
  20.    return B<T>();
  21. }
  22.  
  23. int main()
  24. {
  25.    A<int> a;
  26.    B<int> b;
  27.    +b;
  28. }
  29.  
  30.  
Success #stdin #stdout 0s 3452KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/WjpxyY
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!