error C2512: 'std::basic_ostream<_Elem,_Traits>' : no appropriate default constructor available with Visual Studio only

Question

I\'m asking this question because I\'m a bit helpless: this error occurs ONLY with Visual Studio, GCC compiles it without errors or even warnings. Since this is some portable co

Answer 1

std::ostream is a type alias for std::basic_ostream<char>. The constructor of std::basic_ostream<char> expects a pointer to a stream buffer to which the output stream is associated. You must provide one.

The signature of the constructor is the following one:

 explicit basic_ostream( std::basic_streambuf<CharT, Traits>* sb );

Your class constructor should look something like this:

class MyObject : public Socket, public std::ostream
{
    MyObject(/* ... */) 
        : 
        std::ostream(/* provide a ptr to a stream buffer here /*) 
    //  ...
    {
        // ...
    }
};

Also see this for a reference.