Crash on exit, stack smashing detected

pauledd

Its been a long time since I wrote my last Qt/C++ code but now I encounter a possibly very very stupid error.

I have this simple window that crashes when I click the close button.

*** stack smashing detected ***: terminated
10:17:37: The program has unexpectedly finished.

main.cpp

#include <QApplication>
#include "mainwindow.h"
int main(int argc, char *argv[])
{
    QApplication app(argc,argv);
    Window window;
    window.show();
    return app.exec();
}

mainwindow.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QWidget>
#include <QHBoxLayout>
#include <QLabel>

class Window : public QWidget
{
    Q_OBJECT
public:
    explicit Window(QWidget *parent = 0);
private:
   QHBoxLayout *hboxlayout;
   QLabel *lb_cmref;
};

#endif // MAINWINDOW_H

mainwindow.c

#include "mainwindow.h"

Window::Window(QWidget *parent)
    :QWidget(parent)
{
    hboxlayout = new QHBoxLayout();
    //QHBoxLayout *hboxlayout = new QHBoxLayout();
    lb_cmref = new QLabel("CMREFCTL");
    hboxlayout->addWidget(lb_cmref);
    this->setLayout(hboxlayout);
}

The problem seems the QHboxlayout and its creation/deletion...
if I create it directly in the mainwindow.c file like this:

QHBoxLayout *hboxlayout = new QHBoxLayout();

then the application does exit without error.
Whats the problem here?

KroMignon

@pauledd said in Crash on exit, stack smashing detected:

The problem seems the QHboxlayout and its creation/deletion...
if I create it directly in the mainwindow.c file like this:
QHBoxLayout *hboxlayout = new QHBoxLayout();

then the application does exit without error.
Whats the problem here?

I can't believe the problem is here, were else do you use hboxlayout?

pauledd

@KroMignon said in Crash on exit, stack smashing detected:

I can't believe the problem is here, were else do you use hboxlayout?

There is no more code than in my first post. Except the *.pro file maybe:

CONFIG += core gui debug

SOURCES += \
    main.cpp \
    mainwindow.cpp
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

HEADERS += \
    mainwindow.h

pauledd

Okay, this was really weird. I did a "BUILD->Clean Project "" for all configuration" and rebuild it and the problem is gone...

Maybe I messed with some garbage remnant... never mind!
Marked as Solved.