Examples of errors detected by the V702 diagnostic

V702. Classes should always be derived from std::exception (and alike) as 'public'.

Celestia

V702 Classes should always be derived from std::exception (and alike) as 'public' (no keyword was specified, so compiler defaults it to 'private'). fs.h 21

 class filesystem_error : std::system_error { public: filesystem_error(std::error_code ec, const char* msg) : std::system_error(ec, msg) { } }; // filesystem_error 

Windows Calculator

V702 Classes should always be derived from std::exception (and alike) as 'public' (no keyword was specified, so compiler defaults it to 'private'). CalcManager CalcException.h 4

 class CalcException : std::exception { public: CalcException(HRESULT hr) { m_hr = hr; } HRESULT GetException() { return m_hr; } private: HRESULT m_hr; };