Class CustomException

tests/SelfTest/UsageTests/Exception.tests.cpp:37–48

    }

    class CustomException {
    public:
        explicit CustomException(const std::string& msg)
            : m_msg(msg) {}

        std::string const& getMessage() const {
            return m_msg;
        }

    private:
        std::string m_msg;
    };

    class CustomStdException : public std::exception {
    public: