fork download
copy 
  1. #include <iostream>
  2. #include <fstream>
  3. #include <sstream>
  4. #include <vector>
  5. #include <string>
  6. #include <memory>
  7. #include <map>
  8. #include <set>
  9.  
  10. class HasPtr
  11. {
  12. public:
  13. 	HasPtr(std::string const &s = std::string())
  14. 		: ptr(new std::string(s)), use(new std::size_t(1)) {}
  15. 	HasPtr(const HasPtr &p)
  16. 		: ptr(p.ptr), use(p.use)
  17. 	{
  18. 		++*use;
  19. 		std::cout << "copy constructor" << std::endl;
  20. 	}
  21. 	~HasPtr()
  22. 	{
  23. 		if (--*use == 0)
  24. 		{
  25. 			delete ptr;
  26. 			delete use;
  27. 		}
  28. 	}
  29. 	HasPtr& operator=(const HasPtr &rhs)
  30. 	{
  31. 		//++*rhs.use;
  32. 		if (--*use)
  33. 		{
  34. 			delete ptr;
  35. 			delete use;
  36. 		}
  37. 		++*rhs.use;
  38. 		ptr = rhs.ptr;
  39. 		use = rhs.use;
  40.  
  41. 		std::cout << "operaator=" << std::endl;
  42.  
  43. 		return *this;
  44. 	}
  45. private:
  46. 	std::string *ptr;
  47. 	std::size_t *use;
  48. };
  49.  
  50. void f(HasPtr x) {}
  51.  
  52. int main()
  53. {
  54. 	HasPtr h(std::string("xxx"));
  55. 	h = h;
  56. 	f(h);
  57. 	return 0;
  58. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
operaator=
copy constructor
https://ideone.com/dDPxt2
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!