fork(1) download
copy 
  1. #include <iostream>
  2.  
  3. template<typename T>
  4. class ptr {
  5. 	T* m_ptr;
  6.     public:
  7. 		ptr(T* a_ptr) : m_ptr(a_ptr) {}
  8.         T& operator * () const { return *m_ptr; };
  9. };
  10.  
  11. template<>
  12. class ptr<void> {
  13. 	void* m_ptr;
  14.     public:
  15. 		ptr(void* a_ptr) : m_ptr(a_ptr) {}
  16. };
  17.  
  18. int main()
  19. {
  20. 	int i = 12345;
  21. 	ptr<int> ptr_i(&i);
  22. 	std::cout << *ptr_i; // OK
  23.  
  24. 	ptr<void> ptr_i2(&i);
  25. 	std::cout << *ptr_i2; // ERROR
  26.  
  27. 	return 0;
  28. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:25:15: error: no match for ‘operator*’ (operand type is ‘ptr<void>’)
  std::cout << *ptr_i2; // ERROR
               ^~~~~~~
stdout
copy 
Standard output is empty
https://ideone.com/Z5h2di
language:
C++ (gcc 8.3)
created:
5 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!