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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.    	weird();
  8.    }
  9.    ~A() {
  10.    	std::cout << "A() is destructed (this = " << static_cast<void*>(this) << ")\n";
  11.    }
  12.    void weird() {
  13.      hello();
  14.    }
  15.    virtual void hello() = 0;
  16. };
  17.  
  18. void A::hello() {
  19.   std::cout << "Hello from A! (this = " << static_cast<void*>(this) << ")\n";
  20. }
  21.  
  22. class B : public A {
  23.  public:
  24.    B(bool call ) : A(call) {
  25.    	std::cout << "B() is constructed (this = " << static_cast<void*>(this) << ")\n";
  26. 	hello();
  27.    }
  28.    ~B() {
  29.    	std::cout << "B() is destructed (this = " << static_cast<void*>(this) << ")\n";
  30.    }
  31.    virtual void hello();
  32. };
  33.  
  34. void B::hello() {
  35.   std::cout << "Hello from B! (this = " << static_cast<void*>(this) << ")\n";
  36. }
  37.  
  38. int main() {
  39.   //B not_call(false);
  40.   B call(true);
  41. }
Runtime error #stdin #stdout #stderr 0s 15232KB
comments (?)
stdin
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Standard input is empty
stdout
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A() is constructed (this = 0x7ffec4f45d60)
stderr
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pure virtual method called
terminate called without an active exception
https://ideone.com/l14Vpd
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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