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  1. #include <iostream>
  2. #include <system_error>
  3.  
  4. int main()
  5. {
  6.  
  7.      std::error_condition econd = std::system_category().default_error_condition(EFAULT);
  8.       std::cout << "Category: " << econd.category().name() << '\n'
  9.               << "Value: " << econd.value() << '\n'
  10.               << "Message: " << econd.message() << '\n';
  11.  
  12.     try
  13.     {
  14.         throw std::system_error( std::error_code(EFAULT, std::system_category()) );
  15.     }
  16.     catch (const std::system_error& error)
  17.     {
  18.         std::cout << "Error: " << error.code()
  19.                   << " - " << error.code().message()
  20.                   << ". Category: " << error.code().category().name()
  21.                    << '\n';
  22.     }
  23. }
Success #stdin #stdout 0s 3064KB
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stdin
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Standard input is empty
stdout
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Category: system
Value: 14
Message: Bad address
Error: system:14 - Bad address. Category: system
https://ideone.com/hGCN7
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
secret

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