[solved] Unusual segmentation error?

IanBorn

Adding more variables to Tutor class solved this unusual segmentation error. Thanks.

The application is running correctly. Here is the code to initialize audio output :
@
void Tutor::init_audio_output()
{
has_audio_flag=true;
QList<QAudioDeviceInfo> devices = QAudioDeviceInfo::availableDevices(QAudio::AudioOutput);
if (devices.size()<1)
{
has_audio_flag=false;
return;
}
format.setFrequency(11025);
format.setChannels(1);
format.setSampleSize(8);
format.setSampleType(QAudioFormat::UnSignedInt);
format.setByteOrder(QAudioFormat::LittleEndian);
format.setCodec("audio/pcm");

audioOutput = new QAudioOutput(format,this);
if (audioOutput==NULL) 
{
   has_audio_flag=false;
   return;
}
audioOutput->setBufferSize (MAX_BUFFER_SIZE);
audioOutput->reset();

}
@

But, when I cloase it, it give me this error :
@
QAudioOutputPrivate::~QAudioOutputPrivate()
{
EnterCriticalSection(&waveOutCriticalSection);
finished = true;
LeaveCriticalSection(&waveOutCriticalSection);

close();
DeleteCriticalSection(&waveOutCriticalSection);

}
0 ntdll!EtwEventWriteTransfer C:\Windows\system32\ntdll.dll 0 0x7772308e
1 ntdll!EtwEventWriteTransfer C:\Windows\system32\ntdll.dll 0 0x77722f4c
2 ~QAudioOutputPrivate qaudiooutput_win32_p.cpp 83 0x64dc5799
3 ~QAudioOutput qaudiooutput.cpp 176 0x64dc2117
4 QObjectPrivate::deleteChildren qobject.cpp 1978 0x6a20e234
5 ~QWidget qwidget.cpp 1459 0x017ebec2
6 ~QMainWindow qmainwindow.cpp 342 0x01b7df60
7 ~Tutor tutor.cpp 299 0x0040a2f8
8 qMain main.cpp 9 0x0040141d
9 WinMain@16 qtmain_win.cpp 131 0x0050bb02
10 main 0 0x0050b828

@

tobias.hunger

That section of the code is not even mentioned in the output you provided, so why did you post it?

IanBorn

The last code is what the Debugger said after I close the application.

deimos

2 cents for the close(); statement in ~QAudioOutputPrivate(). Try to remove it

IanBorn

I did not close it. I let the c++ to do garbage collection. In ~Tutor(), I did not fo anything,
not even delete ui.