Class SystemError

ext/include/cppformat/format.h:1384–1411

An error returned by an operating system or a language runtime, for example a file opening error. */

 for example a file opening error.
*/
class SystemError : public internal::RuntimeError {
 private:
  void init(int error_code, StringRef format_str, ArgList args);

 protected:
  int error_code_;

  typedef char Char;  // For FMT_VARIADIC_CTOR.

  SystemError() {}

 public:
  /**
   \rst
   Constructs a :cpp:class:`fmt::SystemError` object with the description
   of the form "*<message>*: *<system-message>*", where *<message>* is the
   formatted message and *<system-message>* is the system message corresponding
   to the error code.
   *error_code* is a system error code as given by ``errno``.
   \endrst
  */
  SystemError(int error_code, StringRef message) {
    init(error_code, message, ArgList());
  }
  FMT_VARIADIC_CTOR(SystemError, init, int, StringRef)

  int error_code() const { return error_code_; }
};

/**
  \rst