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  1. #include <iostream>
  2.  
  3. //
  4. // 危険なコード
  5. // デストラクタが呼ばれた後のオブジェクトを参照している
  6. //
  7.  
  8. struct something
  9. {
  10.   int a = 0;
  11.   int& get() { return ( a ); }
  12.   ~something() { std::cout << "destructor" << std::endl; }
  13. };
  14.  
  15. int main()
  16. {
  17.   int& n = something().get();
  18.   // n is destructed.
  19.   std::cout << n << std::endl; // oops!
  20. }
  21.  
Success #stdin #stdout 0s 3096KB
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stdin
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Standard input is empty
stdout
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destructor
-1219985843
https://ideone.com/kZl61O
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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