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  1. #include <iostream>
  2. #include <cstddef>
  3.  
  4. struct Containing {
  5.     struct {
  6.         void* get_containing () {
  7.             return (char*) this - offsetof (Containing, inner);
  8.         }
  9.     } inner;
  10. };
  11.  
  12. int main()
  13. {
  14. 	Containing c;
  15. 	std::cout<<(&(c.inner) == c.inner.get_containing());
  16. }
Success #stdin #stdout 0s 3296KB
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https://ideone.com/csqQ1F
language:
C++ (gcc 8.3)
created:
10 years ago
visibility:
public

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