QT -= gui

CONFIG += c++ console

CONFIG -= app_bundle

# The following define makes your compiler emit warnings if you use

# any feature of Qt which as been marked deprecated (the exact warnings

# depend on your compiler). Please consult the documentation of the

# deprecated API in order to know how to port your code away from it.

DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if you use deprecated APIs.

# In order to do so, uncomment the following line.

# You can also select to disable deprecated APIs only up to a certain version of Qt.

#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.

SOURCES += \

        main.cpp \

    baseclass.cpp \

    subclass.cpp

# Default rules for deployment.

qnx: target.path = /tmp/$${TARGET}/bin

else: unix:!android: target.path = /opt/$${TARGET}/bin

!isEmpty(target.path): INSTALLS += target

HEADERS += \

    baseclass.h \

    subclass.h

#ifndef BASECLASS_H

#define BASECLASS_H

#include "QObject"

class baseClass: public QObject

{

    Q_OBJECT

public:

    baseClass(QObject * p = );

    virtual ~baseClass() {}

signals:

    void signal1();

};

#endif // BASECLASS_H

#include "baseclass.h"

baseClass::baseClass(QObject * p) : QObject(p)

{

}

#ifndef SUBCLASS_H

#define SUBCLASS_H

#include "baseclass.h"

class subClass: public baseClass

{

    Q_OBJECT

public:

    subClass(QObject * p = );

    virtual ~subClass() {};

//signals:

    void signal2();

};

#endif // SUBCLASS_H

#include "subclass.h"

subClass::subClass(QObject * p) : baseClass (p)

{

}

#include <QCoreApplication>

#include "subclass.h"

int main(int argc, char *argv[])

{

    QCoreApplication a(argc, argv);

    subClass * sub = new subClass();

    return a.exec();

}

testQtSignalBug/subclass.cpp:: error: undefined reference to `vtable for subClass'

collect2: error: ld returned  exit status