Problem in allocating memory for QNetworkAccessManager

[Sitaram]

Hello,
I have created an application in Qt which reads .txt file from url. For reading file from network url, I am using QNetworkAccessManager. I am using visual studio 2008 as development kit and Qt version is 4.8.1. Also If I am run program in debug mode, it is reading file but if I am running program in Release mode, program breaks while creating object of QNetworkAccessManager.

See below code snippet.

QNetworkAccessManager *manager = new QNetworkAccessManager();
    QNetworkRequest request(xmlURL);
    manager->setNetworkAccessible(QNetworkAccessManager::Accessible);
    connect(manager, SIGNAL(finished(QNetworkReply*)),
        this, SLOT(ReplyFinishedCheck(QNetworkReply*)));
    try 
    {
        pReply = manager->get(request);
    }
    catch (...)
    {
        verionLabel->setText("Error in connection with network");
    }
    
    connect(pReply, SIGNAL(error(QNetworkReply::NetworkError)),
        this, SLOT(slotError(QNetworkReply::NetworkError)));
    connect(pReply, SIGNAL(sslErrors(QList<QSslError>)),
        this, SLOT(slotSslErrors(QList<QSslError>)));

[Paul Colby]

Hi @Sitaram, and welcome :)

program breaks while creating object

What exact error message are you getting?

[Sitaram]

@Paul-Colby
I dont get ant error message. Actually program exits. But in debug mode it works.

[Sitaram]

@Paul-Colby

Actually program exits while creating instance of the class for this statement.

QNetworkAccessManager *manager = new QNetworkAccessManager();

[Pradeep Kumar]

Hi,

Welcome to Forum
Can u first check whether you are creating only one instance.
First initialize the variable manager to NULL. Check if its NULL then create the object.

Are u calling in slots?.