fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. struct tmp {
  5. 	int i;
  6. 	const int *get_i() const { return &i; }
  7. 	tmp() : i(42) {}
  8. 	~tmp() { cout << "tmp destroyed" << endl; }
  9. };
  10.  
  11. tmp gettmp()
  12. {
  13.   tmp t;
  14.   return t;
  15. }
  16.  
  17. int main() {
  18. 	cout << "Begin" << endl;
  19. 	const int *i = gettmp().get_i();
  20. 	cout << "end" << endl;
  21.  
  22. 	cout << "[Danger] i is dangling here" << endl;
  23.  
  24. 	return 0;
  25. }
Success #stdin #stdout 0s 3340KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Begin
tmp destroyed
end
[Danger] i is dangling here
https://ideone.com/OFCjJt
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
secret

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!