Simplest app with QNetworkAccessManager and First-chance exception

**allexz** · 23rd January 2013, 21:01

Hi all,

I have created the simplest Qt (5.0.0) application using VS Add-in.
Added the simplest network request:

test.h

Qt Code:

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#ifndef TEST_H
#define TEST_H
 
#include <QtWidgets/QMainWindow>
#include <QtNetwork>
#include "ui_test.h"
 
class Test : public QMainWindow
{
	Q_OBJECT
 
public:
	Test(QWidget *parent = 0);
	~Test();
 
public slots:
	void Button_clicked();
	void Request_finished(QNetworkReply *reply);
 
private:
	Ui::TestClass ui;
};
 
#endif // TEST_H

#ifndef TEST_H
#define TEST_H

#include <QtWidgets/QMainWindow>
#include <QtNetwork>
#include "ui_test.h"

class Test : public QMainWindow
{
	Q_OBJECT

public:
	Test(QWidget *parent = 0);
	~Test();

public slots:
	void Button_clicked();
	void Request_finished(QNetworkReply *reply);

private:
	Ui::TestClass ui;
};

#endif // TEST_H

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test.cpp

Qt Code:

Switch view

#include "test.h"
#include <QtWidgets>
 
Test::Test(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);
	QObject::connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(Button_clicked()));
 
}
 
Test::~Test()
{
 
}
 
void Test::Button_clicked()
{
	QNetworkAccessManager* manager = new QNetworkAccessManager(this);
 
	QObject::connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(Request_finished(QNetworkReply *)));
 
	QNetworkRequest request(QUrl("http://www.google.com"));
 
	QNetworkReply *reply = manager->get(request);
}
 
void Test::Request_finished(QNetworkReply *reply)
{
	reply->deleteLater();
}

#include "test.h"
#include <QtWidgets>

Test::Test(QWidget *parent)
	: QMainWindow(parent)
{
	ui.setupUi(this);
	QObject::connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(Button_clicked()));

}

Test::~Test()
{

}

void Test::Button_clicked()
{
	QNetworkAccessManager* manager = new QNetworkAccessManager(this);

	QObject::connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(Request_finished(QNetworkReply *)));

	QNetworkRequest request(QUrl("http://www.google.com"));

	QNetworkReply *reply = manager->get(request);
}

void Test::Request_finished(QNetworkReply *reply)
{
	reply->deleteLater();
}

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main.cpp

Qt Code:

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#include "test.h"
#include "qmyapp.h"
 
int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	Test w;
	w.show();
	return a.exec();
}

#include "test.h"
#include "qmyapp.h"

int main(int argc, char *argv[])
{
	QApplication a(argc, argv);
	Test w;
	w.show();
	return a.exec();
}

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test.ui contains a single QPushButton pushButton.

Now if I start application and press button, then after main window destroyed I receive the following line in VS Output window:

First-chance exception at 0x74e5b9bc in Test.exe: 0x0000000D: The data is invalid.

What's wrong?
Thank you.

**wysota** · 23rd January 2013, 21:19

Show us the debugger backtrace.

**allexz** · 23rd January 2013, 21:46

Originally Posted by wysota

Show us the debugger backtrace.

Qt Code:

Switch view

'Test.exe': Loaded 'W:\BB\Intaview\Test\Win32\Debug\Test.exe', Symbols loaded.
'Test.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Cored.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\user32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\lpk.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\usp10.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcrt.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\advapi32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\sechost.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rpcrt4.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\sspicli.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\cryptbase.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\ole32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\ws2_32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\nsi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icuin49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icuuc49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icudt49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcr100.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcp100.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcp100d.dll', Symbols loaded.
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcr100d.dll', Symbols loaded.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Widgetsd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\shell32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\shlwapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Guid.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\libGLESv2d.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\D3DCompiler_43.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Networkd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dnsapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\crypt32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msasn1.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\imm32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msctf.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimal.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimal.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimald.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimald.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindows.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindows.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\winmm.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\oleaut32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\libEGLd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\d3d9.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\version.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\d3d8thk.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dwmapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\uxtheme.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files (x86)\ABBYY Lingvo x3\LvHook.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\cryptsp.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rsaenh.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\RpcRtRemote.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files\ThinkPad\Bluetooth Software\syswow64\BtMmHook.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\psapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\clbcatq.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearer.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearer.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearer.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearer.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\IPHLPAPI.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\winnsi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dhcpcsvc.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dhcpcsvc6.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wlanapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wlanutil.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\mswsock.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wship6.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files (x86)\Common Files\microsoft shared\Windows Live\WLIDNSP.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rasadhlp.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\FWPUCLNT.DLL', Cannot find or open the PDB file
'Test.exe': Unloaded 'C:\Windows\SysWOW64\wship6.dll'
'Test.exe': Unloaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL'
'Test.exe': Unloaded 'C:\Program Files (x86)\Common Files\microsoft shared\Windows Live\WLIDNSP.DLL'
'Test.exe': Unloaded 'C:\Windows\SysWOW64\FWPUCLNT.DLL'
'Test.exe': Loaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL', Cannot find or open the PDB file
First-chance exception at 0x74e5b9bc in Test.exe: 0x0000000D: The data is invalid.
The thread 'Win32 Thread' (0x1cb4) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xb1d8) has exited with code 0 (0x0).
The thread 'bearerThread' (0xa918) has exited with code 0 (0x0).
The thread 'Thread (pooled)' (0x8248) has exited with code 0 (0x0).
'Test.exe': Unloaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL'
The thread 'Win32 Thread' (0xb164) has exited with code 0 (0x0).
The thread 'httpThread' (0x90cc) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xa3a0) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xabe8) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xad20) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x22a4) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xac68) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xb3a8) has exited with code 0 (0x0).
The program '[39824] Test.exe: Native' has exited with code 0 (0x0).

'Test.exe': Loaded 'W:\BB\Intaview\Test\Win32\Debug\Test.exe', Symbols loaded.
'Test.exe': Loaded 'C:\Windows\SysWOW64\ntdll.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\kernel32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\KernelBase.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Cored.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\user32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\gdi32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\lpk.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\usp10.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcrt.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\advapi32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\sechost.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rpcrt4.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\sspicli.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\cryptbase.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\ole32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\ws2_32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\nsi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icuin49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icuuc49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\icudt49.dll', Binary was not built with debug information.
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcr100.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcp100.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcp100d.dll', Symbols loaded.
'Test.exe': Loaded 'C:\Windows\SysWOW64\msvcr100d.dll', Symbols loaded.
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Widgetsd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\shell32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\shlwapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Guid.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\libGLESv2d.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\D3DCompiler_43.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\Qt5Networkd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dnsapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\crypt32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msasn1.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\imm32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\msctf.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimal.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimal.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimald.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qminimald.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindows.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindows.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\platforms\qwindowsd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\winmm.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\oleaut32.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\bin\libEGLd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\d3d9.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\version.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\d3d8thk.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dwmapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\uxtheme.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files (x86)\ABBYY Lingvo x3\LvHook.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\cryptsp.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rsaenh.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\RpcRtRemote.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files\ThinkPad\Bluetooth Software\syswow64\BtMmHook.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\psapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\clbcatq.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearer.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearer.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearer.dll', Binary was not built with debug information.
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearer.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll', Cannot find or open the PDB file
'Test.exe': Unloaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll'
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qgenericbearerd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\IPHLPAPI.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\winnsi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dhcpcsvc.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\dhcpcsvc6.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'W:\Qt\5.0.0\msvc2010\plugins\bearer\qnativewifibearerd.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wlanapi.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wlanutil.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\mswsock.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\wship6.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Program Files (x86)\Common Files\microsoft shared\Windows Live\WLIDNSP.DLL', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\rasadhlp.dll', Cannot find or open the PDB file
'Test.exe': Loaded 'C:\Windows\SysWOW64\FWPUCLNT.DLL', Cannot find or open the PDB file
'Test.exe': Unloaded 'C:\Windows\SysWOW64\wship6.dll'
'Test.exe': Unloaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL'
'Test.exe': Unloaded 'C:\Program Files (x86)\Common Files\microsoft shared\Windows Live\WLIDNSP.DLL'
'Test.exe': Unloaded 'C:\Windows\SysWOW64\FWPUCLNT.DLL'
'Test.exe': Loaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL', Cannot find or open the PDB file
First-chance exception at 0x74e5b9bc in Test.exe: 0x0000000D: The data is invalid.
The thread 'Win32 Thread' (0x1cb4) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xb1d8) has exited with code 0 (0x0).
The thread 'bearerThread' (0xa918) has exited with code 0 (0x0).
The thread 'Thread (pooled)' (0x8248) has exited with code 0 (0x0).
'Test.exe': Unloaded 'C:\Windows\SysWOW64\WSHTCPIP.DLL'
The thread 'Win32 Thread' (0xb164) has exited with code 0 (0x0).
The thread 'httpThread' (0x90cc) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xa3a0) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xabe8) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xad20) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0x22a4) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xac68) has exited with code 0 (0x0).
The thread 'Win32 Thread' (0xb3a8) has exited with code 0 (0x0).
The program '[39824] Test.exe: Native' has exited with code 0 (0x0).

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P.S. I'm running under Windows 7 Pro x64.

**wysota** · 23rd January 2013, 22:19

That's not a backtrace.

**allexz** · 23rd January 2013, 22:29

Originally Posted by wysota

That's not a backtrace.

I'm sorry.
Do you mean the call stack?
But it is not very informative since it happens in some system thread...

Qt Code:

Switch view

KernelBase.dll!74e5b9bc() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for KernelBase.dll]	
 	KernelBase.dll!74e5b9bc() 	
>	rpcrt4.dll!74b60e0b() 	
 	rpcrt4.dll!74b60d9a() 	
 	wlanapi.dll!6af34ed7() 	
 	rpcrt4.dll!74b2feac() 	
 	ntdll.dll!7710004d() 	
 	ntdll.dll!7710f8b1() 	
 	ntdll.dll!7710fee2() 	
 	ntdll.dll!77129e83() 	
 	ntdll.dll!7710f8b1() 	
 	KernelBase.dll!74e60a91() 	
 	KernelBase.dll!74e60a2f() 	
 	kernel32.dll!74c61194() 	
 	wlanapi.dll!6af3531d() 	
 	kernel32.dll!74c6339a() 	
 	ntdll.dll!77129ef2() 	
 	ntdll.dll!77129ec5()

KernelBase.dll!74e5b9bc() 	
 	[Frames below may be incorrect and/or missing, no symbols loaded for KernelBase.dll]	
 	KernelBase.dll!74e5b9bc() 	
>	rpcrt4.dll!74b60e0b() 	
 	rpcrt4.dll!74b60d9a() 	
 	wlanapi.dll!6af34ed7() 	
 	rpcrt4.dll!74b2feac() 	
 	ntdll.dll!7710004d() 	
 	ntdll.dll!7710f8b1() 	
 	ntdll.dll!7710fee2() 	
 	ntdll.dll!77129e83() 	
 	ntdll.dll!7710f8b1() 	
 	KernelBase.dll!74e60a91() 	
 	KernelBase.dll!74e60a2f() 	
 	kernel32.dll!74c61194() 	
 	wlanapi.dll!6af3531d() 	
 	kernel32.dll!74c6339a() 	
 	ntdll.dll!77129ef2() 	
 	ntdll.dll!77129ec5()

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Qt Code:

Switch view

Unflagged		46700	0	Main Thread	Main Thread	Test::~Test	Normal
Unflagged		46620	0	Worker Thread	Win32 Thread	7711013d	Normal
Unflagged		7204	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		7908	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		47004	0	RPC Thread	RPC Callback Thread	7710fd71	Normal
Unflagged		24856	0	Worker Thread	Win32 Thread	7711013d	Time Critical
Unflagged		47056	0	Worker Thread	bearerThread	_free_base	Normal
Unflagged	>	44604	0	Worker Thread	Win32 Thread	74e5b9bc	Normal
Unflagged		43628	0	Worker Thread	httpThread	7711013d	Normal
Unflagged		46252	0	Worker Thread	Thread (pooled)	__set_flsgetvalue	Normal
Unflagged		47028	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		46980	0	Worker Thread	Win32 Thread	7710f939	Above Normal

Unflagged		46700	0	Main Thread	Main Thread	Test::~Test	Normal
Unflagged		46620	0	Worker Thread	Win32 Thread	7711013d	Normal
Unflagged		7204	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		7908	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		47004	0	RPC Thread	RPC Callback Thread	7710fd71	Normal
Unflagged		24856	0	Worker Thread	Win32 Thread	7711013d	Time Critical
Unflagged		47056	0	Worker Thread	bearerThread	_free_base	Normal
Unflagged	>	44604	0	Worker Thread	Win32 Thread	74e5b9bc	Normal
Unflagged		43628	0	Worker Thread	httpThread	7711013d	Normal
Unflagged		46252	0	Worker Thread	Thread (pooled)	__set_flsgetvalue	Normal
Unflagged		47028	0	Worker Thread	Win32 Thread	77111f26	Normal
Unflagged		46980	0	Worker Thread	Win32 Thread	7710f939	Above Normal

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**wysota** · 23rd January 2013, 23:01

First of all build your app in debug mode. Second of all it seems your app reaches the destructor of Test but we have no idea what happens next. If I were to guess, I'd say you have a corrupt stack there.

**allexz** · 24th January 2013, 00:55

Originally Posted by wysota

First of all build your app in debug mode.

It was in debug mode... OK, I've loaded system debug symbols but it did not clear anything.
I just can't understand why it happens if I almost do not add any custom code - only a few lines of code from documentation... Something wrong with my system?
Btw, I tried to switch to Qt 4.8.4 - the same story.

Call stack:

Qt Code:

Switch view

>	KernelBase.dll!_RaiseException@16()  + 0x58 bytes	
 	rpcrt4.dll!_RpcpRaiseException@4()  + 0x2f bytes	
 	rpcrt4.dll!NdrpRaisePipeException()  + 0x16 bytes	
 	rpcrt4.dll!NdrReceive()  + 0x1e55 bytes	
 	rpcrt4.dll!NdrLastAsyncReceive()  + 0x2c bytes	
 	rpcrt4.dll!NdrpCompleteAsyncClientCall()  + 0x85 bytes	
 	rpcrt4.dll!Ndr64pCompleteAsyncCall()  + 0x67 bytes	
 	rpcrt4.dll!_RpcAsyncCompleteCall@8()  + 0x1e bytes	
 	wlanapi.dll!_ClientRpcCallback@12()  + 0xa0 bytes	
 	rpcrt4.dll!I_RpcAPCRoutine()  + 0x2c bytes	
 	ntdll.dll!_KiUserApcDispatcher@16()  + 0x25 bytes	
 	kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes	
 	wlanapi.dll!_NotificationApcThreadProc@4()  + 0x54 bytes	
 	kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes	
 	ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes	
 	ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes

>	KernelBase.dll!_RaiseException@16()  + 0x58 bytes	
 	rpcrt4.dll!_RpcpRaiseException@4()  + 0x2f bytes	
 	rpcrt4.dll!NdrpRaisePipeException()  + 0x16 bytes	
 	rpcrt4.dll!NdrReceive()  + 0x1e55 bytes	
 	rpcrt4.dll!NdrLastAsyncReceive()  + 0x2c bytes	
 	rpcrt4.dll!NdrpCompleteAsyncClientCall()  + 0x85 bytes	
 	rpcrt4.dll!Ndr64pCompleteAsyncCall()  + 0x67 bytes	
 	rpcrt4.dll!_RpcAsyncCompleteCall@8()  + 0x1e bytes	
 	wlanapi.dll!_ClientRpcCallback@12()  + 0xa0 bytes	
 	rpcrt4.dll!I_RpcAPCRoutine()  + 0x2c bytes	
 	ntdll.dll!_KiUserApcDispatcher@16()  + 0x25 bytes	
 	kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes	
 	wlanapi.dll!_NotificationApcThreadProc@4()  + 0x54 bytes	
 	kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes	
 	ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes	
 	ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes

To copy to clipboard, switch view to plain text mode

Threads:

Qt Code:

Switch view

Unflagged		47848	0	Main Thread	Main Thread	QPushButton::`scalar deleting destructor'	Normal
Unflagged		48388	0	Worker Thread	_TppWaiterpThread@4	_ZwWaitForMultipleObjects@20	Normal
Unflagged		47932	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		48856	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		31392	0	RPC Thread	RPC Callback Thread	CROIDTable::WorkerThreadLoop	Normal
Unflagged		48988	0	Worker Thread	_timeThread@4	_ZwWaitForMultipleObjects@20	Time Critical
Unflagged		43132	0	Worker Thread	bearerThread	_NtWaitForSingleObject@12	Normal
Unflagged	>	45812	0	Worker Thread	_NotificationApcThreadProc@4	_RaiseException@16	Normal
Unflagged		49048	0	Worker Thread	httpThread	_ZwWaitForMultipleObjects@20	Normal
Unflagged		48496	0	Worker Thread	Thread (pooled)	_NtWaitForSingleObject@12	Normal
Unflagged		49036	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		48080	0	Worker Thread	_SockAsyncThread@4	_ZwRemoveIoCompletion@20	Above Normal
Unflagged		48172	0	Worker Thread	Win32 Thread	_ZwWaitForMultipleObjects@20	Normal
Unflagged		48000	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal

Unflagged		47848	0	Main Thread	Main Thread	QPushButton::`scalar deleting destructor'	Normal
Unflagged		48388	0	Worker Thread	_TppWaiterpThread@4	_ZwWaitForMultipleObjects@20	Normal
Unflagged		47932	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		48856	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		31392	0	RPC Thread	RPC Callback Thread	CROIDTable::WorkerThreadLoop	Normal
Unflagged		48988	0	Worker Thread	_timeThread@4	_ZwWaitForMultipleObjects@20	Time Critical
Unflagged		43132	0	Worker Thread	bearerThread	_NtWaitForSingleObject@12	Normal
Unflagged	>	45812	0	Worker Thread	_NotificationApcThreadProc@4	_RaiseException@16	Normal
Unflagged		49048	0	Worker Thread	httpThread	_ZwWaitForMultipleObjects@20	Normal
Unflagged		48496	0	Worker Thread	Thread (pooled)	_NtWaitForSingleObject@12	Normal
Unflagged		49036	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal
Unflagged		48080	0	Worker Thread	_SockAsyncThread@4	_ZwRemoveIoCompletion@20	Above Normal
Unflagged		48172	0	Worker Thread	Win32 Thread	_ZwWaitForMultipleObjects@20	Normal
Unflagged		48000	0	Worker Thread	_TppWorkerThread@4	_NtWaitForWorkViaWorkerFactory@8	Normal

To copy to clipboard, switch view to plain text mode

**wysota** · 24th January 2013, 01:36

Is what you posted earlier a complete app you're testing on right now?

**allexz** · 24th January 2013, 02:49

Originally Posted by wysota

Is what you posted earlier a complete app you're testing on right now?

Yes! Nothing more! Just a clear project with one button and simple network request.

**wysota** · 24th January 2013, 06:22

Try setting a breakpoint in destructor of Test and step through the code to see when it crashes.

**allexz** · 24th January 2013, 12:54

I found one interesting thing. If I set breakpoint in the destructor of Test class, wait few seconds and continue execution - the exception is not raised.
Looks like some resources don't have time to be freed...

**wysota** · 24th January 2013, 15:17

Since the very beginning I was suspecting some problem with threads which could explain what is going on. However you said the code you posted was a complete testbed so the only threads running are those related to QNetworkAccessManager. Or at least that should be the case. On the other hand we can see around 10 threads in your app. Where are they coming from? Are you sure there is no additional code involved? Are you linking with some external libraries or something like that? Where does qmyapp.h come from?

**allexz** · 24th January 2013, 18:40

Originally Posted by wysota

On the other hand we can see around 10 threads in your app. Where are they coming from?

I wonder myself...

Originally Posted by wysota

Are you sure there is no additional code involved? Are you linking with some external libraries or something like that? Where does qmyapp.h come from?

Yes, I'm sure. qmyapp.h - it contained custom QApplication derived class, but now I don't use it. I even removed it from the project - nothing changed.
Input libraries: qtmaind.lib;QtCored4.lib;QtGuid4.lib;QtNetworkd4.l ib;

OK, thank you anyway!

**pke** · 30th August 2013, 13:26

Did you solve this? I am running into the exact same problem in my code. Same stacktrace, same simple code, just a get() call with the QNAM. And its 100% reproducible.

**crioux** · 30th August 2013, 15:58

I get this error as well, without even using the QNAM. It's loading 'qnativewifibearerd' and then crapping out in it after it tries to to call 'closeHandle'.
My stack trace looks nearly the same.

--chris

**ChrisW67** · 30th August 2013, 20:59

@pke: Are you using exactly the posted code without the customised QApplication, VS2010, and Qt 5.0.0? If so, upgrade your Qt and do a clean build.

@crioux: So you are crashing in this fashion with a program that contains nothing except a QApplication instantiation and Designer Ui. Forgive me if I do not trust that assertion. Do a complete rebuild. Post a single file example and complete version details if the problem persists.

**abc100m** · 5th September 2013, 16:11

I have the same issue, QNetworkAccessManager cause a debug output like :
test.exe .. 0x74fcb727 .....: 0x0000000D: The data is invalid

my test environment is :

window 7 64 bit
visual studio 2008
Qt 5.1

**wysota** · 5th September 2013, 16:30

Originally Posted by abc100m

I have the same issue,

How do you know it is the same issue?

**abc100m** · 5th September 2013, 17:13

I want to reproduce this issue, but same character is Chinese.

Ok, I change a bit code that provide by #1. I create a new Qt project, and have two button:

void Test::Request_finished(QNetworkReply *reply)
{
//reply->deleteLater();
}

void Test::Button_clicked()
{
manager = new QNetworkAccessManager(this);

QObject::connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(Request_finished(QNetworkReply *)));
QNetworkRequest request(QUrl("http://www.google.com"));
reply = manager->get(request);
}

void Test::destroy_clicked()
{
qDebug() << "to delete reply...";
if (reply)
{
reply->abort();
delete reply;//->deleteLater();
reply = NULL;
}

qDebug() << "to delete manager...";
if (manager)
{
delete manager;
manager = NULL;
}

qDebug() << "reply, manager destroyed...";
}

now, I begin to debug my test program in visual studio IDE(just F5).

after the program is run, I break it to see how many threads, and now just have 6 threads:
--------
0 > 3012 ä¸»çº¿ç¨‹ ä¸»çº¿ç¨‹ _free_base æ*£å¸¸ 0
0 1228 RPC çº¿ç¨‹ RPC å›žè°ƒçº¿ç¨‹ 7739fd81 æ*£å¸¸ 0
0 6636 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a014d æ*£å¸¸ 0
0 5628 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 5948 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 6696 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
------------------

now I click button1 to execute void Test::Button_clicked(), after executed I see there 14 threads:
---------------------
0 > 3012 ä¸»çº¿ç¨‹ ä¸»çº¿ç¨‹ _free_base æ*£å¸¸ 0
0 1228 RPC çº¿ç¨‹ RPC å›žè°ƒçº¿ç¨‹ 7739f8c1 æ*£å¸¸ 0
0 5928 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 7739f8c1 æ*£å¸¸ 0
0 7972 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 7739f949 é«˜äºŽæ*£å¸¸ 0
0 5632 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a014d æ—¶é—´å…³é”® 0
0 6636 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a014d æ*£å¸¸ 0
0 4404 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 5528 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 5628 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 6260 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 6696 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 6640 è¾…åŠ©çº¿ç¨‹ Qt HTTP thread QMetaObject::activate æ*£å¸¸ 0
0 8092 è¾…åŠ©çº¿ç¨‹ Qt bearer thread QMetaObject::activate æ*£å¸¸ 0
0 4496 è¾…åŠ©çº¿ç¨‹ Thread (pooled) QWaitConditionPrivate::wait æ*£å¸¸ 0
---------------------

and these time I click button2 to execute void Test::destroy_clicked(), after execute I see there 10 threads left:
---------------------
0 > 3012 ä¸»çº¿ç¨‹ ä¸»çº¿ç¨‹ _free_base æ*£å¸¸ 0
0 5928 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 7739f8c1 æ*£å¸¸ 0
0 5632 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a014d æ—¶é—´å…³é”® 0
0 6636 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a014d æ*£å¸¸ 0
0 3092 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 4060 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 5528 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 5628 è¾…åŠ©çº¿ç¨‹ Win32 çº¿ç¨‹ 773a1f36 æ*£å¸¸ 0
0 4912 è¾…åŠ©çº¿ç¨‹ qt_adopted_thread_watcher_function QArrayData::data æ*£å¸¸ 0
0 8092 è¾…åŠ©çº¿ç¨‹ Qt bearer thread QMetaObject::activate æ*£å¸¸ 0
---------------------------

after about 1 minute, I close the test program, and the visual studio debug window shows:
--------------------------
to delete reply...
to delete manager...
çº¿ç¨‹ 'Qt HTTP thread' (0x19f0) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
reply, manager destroyed...
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0xc14) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x15fc) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
test.exe ä¸*çš„ 0x74fcb727 å¤„æœ€å¯èƒ½çš„å¼‚å¸¸: 0x0000000D: The data is invalid
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x1728) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'qt_adopted_thread_watcher_function' (0x1330) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Qt bearer thread' (0x1f9c) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x1600) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x1338) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x1598) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0xfdc) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0x19ec) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
çº¿ç¨‹ 'Win32 çº¿ç¨‹' (0xe9c) å·²é€€å‡ºï¼Œè¿”å›žå€¼ä ¸º 0 (0x0)ã€‚
ç¨‹åºâ€œ[4784] test.exe: æœ¬æœºâ€å·²é€€å‡ºï¼Œè¿ ”å›žå€¼ä¸º 0 (0x0)ã€‚
------------------------------------------------

**wysota** · 5th September 2013, 17:17

Your code goes way past an empty project with an instance of QNetworkAccessManager that does nothing.

If your back trace is different than OP's then please start your own thread instead of hijacking this one.

Thread: Simplest app with QNetworkAccessManager and First-chance exception

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