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  1. struct B {
  2. };
  3.  
  4. struct Klass : protected B {
  5. 	void foo(void) {
  6. 		static_cast<B*>(this); // Fine
  7. 	}
  8. };
  9.  
  10. struct Derived : public Klass {
  11. 	void bar(void) {
  12. 		static_cast<B*>(this); // Fine
  13. 	}
  14. };
  15.  
  16.  
  17. int main() {
  18. 	Klass k;
  19. 	static_cast<B*>(&k); // nope
  20. 	Derived d;
  21. 	static_cast<B*>(&d); // nope
  22. }
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:19:20: error: ‘B’ is an inaccessible base of ‘Klass’
  static_cast<B*>(&k); // nope
                    ^
prog.cpp:21:20: error: ‘B’ is an inaccessible base of ‘Derived’
  static_cast<B*>(&d); // nope
                    ^
stdout
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Standard output is empty
https://ideone.com/e3KZut
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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