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  1. #include <iostream>
  2.  
  3. struct Base {
  4.     virtual ~Base() {
  5.         std::cout << "Base destructor\n";
  6.     }
  7.     virtual void sayHi() {
  8.         std::cout << "Base says hi\n";
  9.     }
  10. };
  11.  
  12. struct Derived : Base {
  13.     ~Derived() override {
  14.         std::cout << "Derived destructor\n";
  15.     }
  16.     void sayHi() override {
  17.         std::cout << "Derived says hi\n";
  18.     }
  19. };
  20.  
  21. struct Container {
  22.     Derived derivedMember;
  23.     Base& baseRef;
  24.  
  25.     Container() : baseRef(derivedMember) {}
  26.     ~Container() {
  27.         std::cout << "Container destructor\n";
  28.         // No explicit virtual call here!
  29.     }
  30. };
  31.  
  32. Container globalContainer;
  33.  
  34. int main() {
  35.     std::cout << "Main start\n";
  36.     // No explicit use
  37.     return 0;
  38. }
Success #stdin #stdout 0s 5312KB
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Standard input is empty
stdout
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Main start
Container destructor
Derived destructor
Base destructor
https://ideone.com/1lejTZ
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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