Re: compiling gtkmm with atkmm support fails in implementor.cc

[codekiddy <codekiddy gmail com>]

codekiddy - can you try the above example and let us know if you also see a hang at that line?  Tomorrow I'll try rebuilding (this time with GTKMM_ATKMM_ENABLED #undef'd) just to confirm that it doesn't then fail.

OK, I've rebuilt the gtkmm with #define GTKMM_ATKMM_ENABLED 1 , compiled the code you provided, set the breakpoints and run the application.

The result is the same as yours:

The code:

 int main (int argc, char *argv[])
    {
        Gtk::Main       *app = new Gtk::Main (&argc, &argv);
        Gtk::Window  *mainWnd = new Gtk::Window;

             delete mainWnd;  // indirectly calls Atk::~implementor and application crashes.

       delete app;
       return 0;
    }

Exception thrown (atkmm.dll) in gtkmm.exe: Access violation writing location

On Tue, Nov 17, 2015 at 7:28 PM, John Emmas <john creativepost co uk> wrote:

On 17/11/2015 15:54, Kjell Ahlstedt wrote:

The question now is: Why is pCppObject_->unreference() called in the RefPtr destructor when gtkmm,
atkmm and glibmm are built with MSVC? Who sets pCppObject_ to something != nullptr? Or isn't RefPtr's default constructor executed when the Gtk::Window is created?

RefPtr is proving tricky to debug into (maybe because it's a template - and inline?)  However while trying it, I discovered something slightly more worrying.  Even this fails when GTKMM_ATKMM_ENABLED is #defined:-

    int main (int argc, char *argv[])
    {
        Gtk::Main       *app = new Gtk::Main (&argc, &argv);
        Gtk::Window  *mainWnd = new Gtk::Window;

        delete mainWnd;  // <-- hangs here !!
        delete app;

        return 0;
    }

codekiddy - can you try the above example and let us know if you also see a hang at that line?  Tomorrow I'll try rebuilding (this time with GTKMM_ATKMM_ENABLED #undef'd) just to confirm that it doesn't then fail.

John

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