C++ 20170807

mesos/3rdparty/stout/include/stout/err.hpp
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struct Exit2
{
    Exit2(int _status) : status(_status) {}

    NORETURN ~Exit2()
    {
        std::cerr << out.str() << std::endl;
        exit(status);
    }

    std::ostream& stream()
    {
        return out;
    }

    std::ostringstream out;
    const int status;
};

int main() {
    Exit2(EXIT_FAILURE).stream() << "qwerer";
    return 0;
}

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#define NORETURN __attribute__((noreturn))           只有析构函数可以用，前边加波浪线的
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#define MyExit(status) Exit2(status).stream()

int main() {
    MyExit(EXIT_FAILURE) << "error---------";
    return 0;
}
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