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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int gCnt = 0;
  6.  
  7. struct Ptr {
  8.     int num;
  9. 	Ptr() : num(++gCnt) { cout << "Ptr::Ptr() " << num << endl; }
  10. 	Ptr(Ptr const& o) : num(o.num*10 + 2) { cout << "Ptr::Ptr( " << o.num << " ) " << num << endl; }
  11. 	~Ptr() { cout << "Ptr::~Ptr() " << num << endl; }
  12. };
  13.  
  14. struct Arr {
  15. 	Arr() { cout << "Arr::Arr()" << endl; }
  16. 	~Arr() { cout << "Arr::~Arr()" << endl; }
  17. 	operator Ptr() const { cout << "Arr::operator Ptr()" << endl; return Ptr(); }
  18. private:
  19. 	Arr(Arr const&);
  20. };
  21.  
  22. struct S {
  23. 	static const Arr a;
  24. };
  25. const Arr S::a;
  26.  
  27. Ptr const& foo() { cout << "call" << endl; Ptr const& r = S::a; cout << "return" << endl; return r; }
  28.  
  29. int main()
  30. {
  31.     using namespace std;
  32.  
  33.     cout << "a" << endl;
  34.     {
  35. 		cout << "b" << endl;
  36. 		Ptr const& x = foo();
  37. 		cout << x.num << endl;
  38. 		cout << x.num << endl;
  39. 		cout << "c" << endl;
  40.     }
  41.     cout << "d" << endl;
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0s 2856KB
comments (?)
stdin
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Standard input is empty
stdout
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Arr::Arr()
a
b
call
Arr::operator Ptr()
Ptr::Ptr() 1
return
Ptr::~Ptr() 1
1
1
c
d
Arr::~Arr()
https://ideone.com/SUrFdA
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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