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  1. #include <iostream>
  2. #include <cstring>
  3.  
  4. struct String {
  5. 	char *buf;
  6. 	size_t size;
  7.  
  8. 	String () : buf(0), size(0){}
  9. 	~String () {
  10. 		std::cout << "release " << (void*)buf << std::endl;
  11. 		delete [] buf; 
  12. 	}
  13. 	String (char *s) {
  14. 		size = strlen(s)+1;
  15. 		buf = new char[size];
  16. 		strcpy (buf, s);
  17. 		std::cout << "allocated at " << (void*)buf << std::endl;
  18. 	}
  19. 	String (String&& o) : buf(o.buf), size(o.size) { o.buf = 0; o.size = 0; }
  20. 	String (const String& o) : buf(new char[o.size]), size(o.size) {
  21. 		strcpy (buf, o.buf);
  22. 		std::cout << "allocated at " << (void*)buf << std::endl;
  23. 	}
  24. };
  25.  
  26. void foo (String&& s) {
  27. 	std::cout << s.buf << std::endl;
  28. }
  29.  
  30. int main() {
  31. 	foo (String ("test"));
  32.  
  33. 	String a("test1");
  34. 	String b(std::move(a));
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 3472KB
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stdin
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Standard input is empty
stdout
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allocated at 0x8531008
test
release 0x8531008
allocated at 0x8531008
release 0x8531008
release 0
https://ideone.com/D4m7KI
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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