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  1. #include <iostream>
  2.  
  3. struct A { virtual void f() { std::cout << __PRETTY_FUNCTION__ << '\n'; } };
  4. struct B : protected A { void f() override { std::cout << __PRETTY_FUNCTION__ << '\n'; } };
  5.  
  6. int main()
  7. {
  8.     B b;
  9.     A* p = &b;
  10.  
  11.     b.f();
  12.     p->f();
  13.     p->A::f();
  14. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:9:13: error: ‘A’ is an inaccessible base of ‘B’
     A* p = &b;
             ^
stdout
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Standard output is empty
https://ideone.com/XgK4eV
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
secret

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