Getting error: ‘unavailable synchroneous data’ in Qt Creator during debugging

[ahmadka]

Hey guys, I'm getting this strange error in Qt while debugging .. Here's whats happening: I am debugging inside this function/method which is part of a class named Canvas. Now within this function, I should be able to access all of this class's variables, etc .. since the access request is coming from within the same class. However, when I'm halted at a specific line within this function and I look at the Local Watch, I see all the variables of this class object listed, however next to all of them it says: 'unavailable synchroneous data' (spelled exactly like this). When I try to access any such variable within this function, the program crashes ... Can someone tell me what is happening here ?

[tbscope]

Can you post your code?

[krzysiek2805]

I have the same problem as ahmadka. When I try to access any such variable "aktualnyGracz" or another variable within this function, the program crashes.
In the constructor variables are displayed good.
This is my code:

server.h

class Server : public QObject
{
    Q_OBJECT
public:
	...
    Table *zwrocTable()
        { return table; }
    QList<Gracz *> listaGracz;  
    qint16 naszIndex;
	...
 
public slots:
    ...
    void startGame();
    ...
 
private:
    QWidget *parentWindow;
    Table *table;
 
};

class Server : public QObject
{
    Q_OBJECT
public:
	...
    Table *zwrocTable()
        { return table; }
    QList<Gracz *> listaGracz;  
    qint16 naszIndex;
	...

public slots:
    ...
    void startGame();
    ...

private:
    QWidget *parentWindow;
    Table *table;

};

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server.cpp

void Server::startGame()
{
    table = new Table(parentWindow, listaGracz, naszIndex);
    connect(table, SIGNAL(closeTable()), this, SLOT(closeServer()), Qt::DirectConnection);
    connect(table, SIGNAL(podbij(quint16)), this, SLOT(podbij(quint16)), Qt::DirectConnection);
    connect(table, SIGNAL(spasuj()), this, SLOT(spasuj()));
	table->ustawGracza(0);
}

void Server::startGame()
{
    table = new Table(parentWindow, listaGracz, naszIndex);
    connect(table, SIGNAL(closeTable()), this, SLOT(closeServer()), Qt::DirectConnection);
    connect(table, SIGNAL(podbij(quint16)), this, SLOT(podbij(quint16)), Qt::DirectConnection);
    connect(table, SIGNAL(spasuj()), this, SLOT(spasuj()));
	table->ustawGracza(0);
}

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table.h

class Table : public QMainWindow, public  Ui::TableWindow
{
    Q_OBJECT
public:
    Table(QWidget *parent, QList<Gracz *> &l, qint16 &n);
    void ustawGracza(qint16 index);
 
private:
	...
    qint16 naszIndex;
    QList<Gracz *> listaWskaz;
};

class Table : public QMainWindow, public  Ui::TableWindow
{
    Q_OBJECT
public:
    Table(QWidget *parent, QList<Gracz *> &l, qint16 &n);
    void ustawGracza(qint16 index);

private:
	...
    qint16 naszIndex;
    QList<Gracz *> listaWskaz;
};

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table.cpp

Table::Table(QWidget *parent, QList<Gracz *> &l, qint16 &n) :
    QMainWindow(parent), listaWskaz(l), naszIndex(n)
	{}
 
void Table::ustawGracza(qint16 index)
{
 
    qDebug() << "something " << index;
    qDebug() << aktualnyGracz;
    uaktualnij();
}

Table::Table(QWidget *parent, QList<Gracz *> &l, qint16 &n) :
    QMainWindow(parent), listaWskaz(l), naszIndex(n)
	{}
	
void Table::ustawGracza(qint16 index)
{

    qDebug() << "something " << index;
    qDebug() << aktualnyGracz;
    uaktualnij();
}

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Can you help me?

[ChrisW67]

I have the same problem as ahmadka. When I try to access any such variable "aktualnyGracz" or another variable within this function, the program crashes.

This might be of interest:
http://stackoverflow.com/questions/5...-in-qt-creator

[poporacer]

I don't see anywhere in your code where you declare or define aktualnyGracz