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  1. #include <iostream>
  2.  
  3. class A {
  4.  public:
  5.    A(bool call) __attribute__((optnone)) {
  6.    	std::cout << "A() is constructed (this = " << static_cast<void*>(this) << ")\n";
  7.    	hello();
  8.    }
  9.    ~A() {
  10.    	std::cout << "A() is destructed (this = " << static_cast<void*>(this) << ")\n";
  11.    }
  12.    virtual void hello() = 0;
  13. };
  14.  
  15. void A::hello() {
  16.   std::cout << "Hello from A! (this = " << static_cast<void*>(this) << ")\n";
  17. }
  18.  
  19. class B : public A {
  20.  public:
  21.    B(bool call ) : A(call) {
  22.    	std::cout << "B() is constructed (this = " << static_cast<void*>(this) << ")\n";
  23. 	hello();
  24.    }
  25.    ~B() {
  26.    	std::cout << "B() is destructed (this = " << static_cast<void*>(this) << ")\n";
  27.    }
  28.    virtual void hello();
  29. };
  30.  
  31. void B::hello() {
  32.   std::cout << "Hello from B! (this = " << static_cast<void*>(this) << ")\n";
  33. }
  34.  
  35. int main() {
  36.   //B not_call(false);
  37.   B call(true);
  38. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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A() is constructed (this = 0x7ffdc6730310)
Hello from A! (this = 0x7ffdc6730310)
B() is constructed (this = 0x7ffdc6730310)
Hello from B! (this = 0x7ffdc6730310)
B() is destructed (this = 0x7ffdc6730310)
A() is destructed (this = 0x7ffdc6730310)
https://ideone.com/cSAW2d
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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