Re: SIGSEGV one sample application

[Phil Wolff <adiabat centurylink net>]

Note also that when MainWindow() returns, all of your widgets are 
destroyed since they go out of scope.

Try this instead:

MainWindow::MainWindow() {
    Gtk::HPaned* mainHPaned = new Gtk::HPaned ();
    mainHPaned->set_position(50);

    Gtk::Label* label1 = new Gtk::Label("the first label");
    mainHPaned->add1(*label1);

    Gtk::Label* label2 = new Gtk::Label("that is the second label");
    mainHPaned->add2(*label2);

    this->add(*mainHPaned);
    this->show_all();
}

On 08/13/2015 01:51 PM, Phil Wolff wrote:
> After inventing a MainWindow.h, I compiled and executed your example 
> without any problems. Perhaps you should show us your MainWindow.h.
>
> On 08/13/2015 01:28 PM, Emil Nowak wrote:
> > Hello,
> > I'm having problems running just a simple application. I got 
> > Segmentation
> > fault with almost empty backtrace, so can't find what is wrong.
> > The code looks like this:
> >
> > main.cc file:
> > #include "MainWindow.h"
> > int main(int argc, char **argv) {
> >     Glib::RefPtr<Gtk::Application> app = Gtk::Application::create(argc,
> > argv); MainWindow window;
> >     return app->run(window);
> > }
> >
> > MainWindow.cc file:
> > #include "MainWindow.h"
> >
> > MainWindow::MainWindow() {
> >      Gtk::HPaned mainHPaned;
> >      mainHPaned.set_position(50);
> >
> >      Gtk::Label label1;
> >      label1.set_text("the first label");
> >      mainHPaned.add1(label1);
> >
> >      Gtk::Label label2;
> >      label2.set_text("that is the second label");
> >      mainHPaned.add2(label2);
> >
> >      this->add(mainHPaned);
> >      this->show_all();
> > }
> >
> > When I run it in debugger:
> > Using host libthread_db library
> > "/lib/i386-linux-gnu/i686/cmov/libthread_db.so.1". [New Thread 
> > 0xb5b5db40 (LWP
> > 4799)]
> >
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x006c6562 in ?? ()
> > (gdb) bt
> > #0  0x006c6562 in ?? ()
> > #1  0xbffff54c in ?? ()
> > Backtrace stopped: previous frame inner to this frame (corrupt stack?)
> >
> >
> > My environment is:
> > g++ version is 4.9.3,
> > gtkmm 3.16.0
> >
> > Can you tell me what is wrong with this sample, or how to get more 
> > details in
> > debugging?
> > _______________________________________________
> > gtkmm-list mailing list
> > gtkmm-list gnome org
> > https://mail.gnome.org/mailman/listinfo/gtkmm-list

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