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  1. class Derived;
  2.  
  3. class Base
  4. {
  5. public:
  6.     Base() = default;
  7.  
  8.     Base(const Derived &d) = delete;
  9.     Base& operator=(const Derived& other) = delete;
  10. };
  11.  
  12. class Derived : public Base
  13. {
  14. };
  15.  
  16. int main()
  17. {
  18. 	Derived d;
  19.     Base b = d;
  20. }
  21.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:19:14: error: use of deleted function ‘Base::Base(const Derived&)’
     Base b = d;
              ^
prog.cpp:8:5: error: declared here
     Base(const Derived &d) = delete;
     ^
stdout
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Standard output is empty
https://ideone.com/gM11Hf
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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