Application closed after QNetworkManager::get (Release, after deployment by mingw32)

Hi guys.

I've got issue as in topic, after deployment (I used windeployqt) my application
exits immediately when QNetworkManager::get() method is called.
That problem occurs on only one computer.

Code:

---

this->_versionUrl = url.value(key).toString();
...
this->_versionRequest.setUrl(QUrl(this->_versionUrl));
...
void Patcher::request(const QNetworkRequest &request)
{
    this->log(tr("Starting request: %1").arg(request.url().toString()));
    this->_reply = this->_manager->get(request);
    this->log(tr("After GET"));
 
    this->connect(this->_reply,         SIGNAL(error(QNetworkReply::NetworkError)),
                  this,                 SLOT(error(QNetworkReply::NetworkError)));
 
    this->connect(this->_reply,         SIGNAL(finished()),
                  this,                 SLOT(finished()));
 
    this->connect(this->_reply,         SIGNAL(downloadProgress(qint64,qint64)),
                  this,                 SLOT(updateProgressBar(qint64,qint64)));
}

---

When I run my application directly after compilation, everything works fine.

My deployment folder contains following files:

Code:

---

│   icudt53.dll
│   icuin53.dll
│   icuuc53.dll
│   libgcc_s_dw2-1.dll
│   libstdc++-6.dll
│   libwinpthread-1.dll
│   patcher.ini
│   Qt5Core.dll
│   Qt5Gui.dll
│   Qt5Network.dll
│   Qt5SerialPort.dll
│   Qt5Svg.dll
│   Qt5Widgets.dll
│   qt_ca.qm
│   qt_cs.qm
│   qt_de.qm
│   qt_fi.qm
│   qt_hu.qm
│   qt_it.qm
│   qt_ja.qm
│   qt_lv.qm
│   qt_ru.qm
│   qt_sk.qm
│   qt_uk.qm
│   quazip.dll
│   MyApp.exe
│   updater.log
│   zlib1.dll
│
├───bearer
│       qgenericbearer.dll
│       qnativewifibearer.dll
│
├───iconengines
│       qsvgicon.dll
│
├───imageformats
│       qdds.dll
│       qgif.dll
│       qicns.dll
│       qico.dll
│       qjp2.dll
│       qjpeg.dll
│       qmng.dll
│       qsvg.dll
│       qtga.dll
│       qtiff.dll
│       qwbmp.dll
│       qwebp.dll
│
├───platforms
│       qminimal.dll
│       qoffscreen.dll
│       qwindows.dll

---

What is the contents of the _reply member variable after the get request?

Also:

• Can you show the code for your error, finished, and updateProgressBar slots?
• What is the stack trace after the crash?

Quote:

---

Can you show the code for your error, finished, and updateProgressBar slots?

---

Code:

---

void Patcher::log(const QString &state)
{
    QFile logFile("updater.log");
    QTextStream stream(&logFile);
    if (logFile.open(QIODevice::WriteOnly | QIODevice::Append | QIODevice::Text))
    {
        stream << QDateTime::currentDateTime().toString("dd.MM.yyyy:hh:mm:ss.zzz")
               << " " << state
               << " pId: " << qApp->applicationPid()
               << "\n";
        logFile.close();
    }
}
void Patcher::error(QNetworkReply::NetworkError)
{
    this->log(this->_reply->errorString());
    exit(-2);
}
void Patcher::finished()
{
    this->log(tr("Reply finished. Url: %1").arg(this._reply->url().toString()));
    ...
    QByteArray versionData = this->_reply->readAll();
    // some processing inside
}
void Patcher::updateProgressBar(qint64 read, qint64 total)
{
    this->log(tr("Uptade progress bar %1 / %2")
                      .arg(QString::number(read))
                      .arg(QString::number(total)));
 
    this->ui->progressBar->setMaximum(total);
    this->ui->progressBar->setValue(read);
}

---

Quote:

---

What is the stack trace after the crash?

---

It doesn't crash the application. App simple turns off when QNAM get is requested.
I've added Google Breakpad into my project from following tutorial:
https://github.com/JPNaude/dev_notes...eakpad-with-Qt
And it doesn't create any minidump file.
Last log from "updater.log" is "Starting request: http://url.to.my/web/page.file".

PS. On mine machine and some VMs problem has no occured.