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  1. #include <iostream>
  2. #include <ostream>
  3. #include <functional>
  4. #include <exception>
  5. using namespace std;
  6.  
  7. // Wrong scope(failure)
  8. class FailBlockT
  9. {
  10.     typedef function<void()> T;
  11.     public:
  12.     T t;
  13.     FailBlockT(T t)
  14.     {
  15.         this->t=t;
  16.     }
  17.     ~FailBlockT()
  18.     {
  19.         if (std::uncaught_exception())
  20.         {
  21.             t();
  22.         }
  23.     }
  24. };
  25.  
  26. struct Test
  27. {
  28.     ~Test()
  29.     {
  30.         try
  31.         {
  32.             FailBlockT f([]()
  33.             {
  34.                 cout << "failure" << endl;
  35.             });
  36.             // there is no any exception here, but "failure" is printed.
  37.             // See output below
  38.         }
  39.         catch(...)
  40.         {
  41.             cout << "some exception" << endl;
  42.         }
  43.     }
  44. };
  45.  
  46. int main()
  47. {
  48.     try
  49.     {
  50.         Test t;
  51.         throw 1;
  52.     }
  53.     catch(int){}
  54.     return 0;
  55. }
Success #stdin #stdout 0s 3020KB
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stdin
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Standard input is empty
stdout
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failure
https://ideone.com/IcWMEf
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
secret

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