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  1. #include <iostream>
  2. #include <iostream>
  3. #include <cstdlib>
  4.  
  5. using namespace std;
  6.  
  7. int main()
  8. {
  9. struct X
  10. {
  11. struct
  12. {
  13. mutable int i;
  14. mutable int j;
  15. };
  16. };
  17. X const x{};
  18. x.i = 1;
  19. return EXIT_SUCCESS;
  20. }
  21.  
Success #stdin #stdout 0s 3452KB
stdin
Standard input is empty
stdout
Standard output is empty