Why next code does not compile?

Question

How do i rewrite next sources properly? It is part of GLib-powered IRC-bot. Compiler crashes with the next error:

src/irc.cpp:20:9: error: cannot call member function ‘Glib::ListHandle<Glib::RefPtr<Gio::InetAddress> > Gio::Resolver::lookup_by_name(const Glib::ustring&, const Glib::RefPtr<Gio::Cancellable>&)’ without object
     ),

Sources:

#include "includes.hpp" // Just including all the files

Glib::RefPtr<Gio::Socket> ircSock; // Our socket

void ircInit() { // Init-function
  try {
    ircSock = Gio::Socket::create( // Creating socket
      Gio::SocketFamily::SOCKET_FAMILY_IPV4,
      Gio::SocketType::SOCKET_TYPE_STREAM,
      Gio::SocketProtocol::SOCKET_PROTOCOL_TCP
    );

    ircSock->connect( // Problematic code
      Gio::InetSocketAddress::create(
        Gio::Resolver::lookup_by_name(
          "irc.freenode.net", // For-example
          Gio::Cancellable::create()
        ),
        6667
      ),
      Gio::Cancellable::create()
    );
  } catch(const Glib::Error& e) {
    std::cerr << "IRC: Error: " << e.what() << std::endl; // Error-reporting
  }
}

because it's a member function. You cannot call it like a static function. — Jean-François Fabre, Nov 30 '16 at 15:38

score 3 · Accepted Answer · answered Nov 30 '16 at 15:41

3

According to documentation, this is member function, so, you need constructed object to call it, while you are trying to call it like it is static function.

Correct fix would be to create Gio::Resolver object, and call this method on created object.

answered Nov 30 '16 at 15:41

Starl1ght

4,422
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`src/irc.cpp:19:18: error: request for member ‘lookup_by_name’ in ‘resolver’, which is of non-class type ‘Gio::Resolver()’` (sorry, i am new to C++. Current ver: [here](http://hastebin.com/sasezeroju.php) – handicraftsman Nov 30 '16 at 16:16

Why next code does not compile?

1 Answers1