Hi,
I’m having a problem with a random crash that not always happens. I would like
to have your advice on how to find the origin of it.
This crash always happens on program exit and the stack trace is the following:
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 org.qt-project.QtCore 0x0000000109a03549
QMutexPrivate::allocate() + 105
1 org.qt-project.QtCore 0x0000000109a02d1c
QBasicMutex::lockInternal(int) + 92
2 org.qt-project.QtCore 0x0000000109a02c64 QMutex::lock() + 52
3 org.qt-project.QtCore 0x0000000109a0b6fd
QWaitCondition::wait(QMutex*, unsigned long) + 173
4 org.qt-project.QtCore 0x0000000109a0aeae
QThread::wait(unsigned long) + 110
5 org.qt-project.QtNetwork 0x000000010a4870da
QNetworkAccessManagerPrivate::~QNetworkAccessManagerPrivate() + 58
6 org.qt-project.QtNetwork 0x000000010a48722e
QNetworkAccessManagerPrivate::~QNetworkAccessManagerPrivate() + 14
7 org.qt-project.QtCore 0x0000000109c3e7c7 QObject::~QObject()
+ 1879
8 org.qt-project.QtNetwork 0x000000010a483c16
QNetworkAccessManager::~QNetworkAccessManager() + 262
The only particularity of this QNetworkAccessManager is the fact that it is
instantiated on a class that is a singleton:
class Manager : public QObject
{
public:
static Manager* sharedManager();
...
QNetworkAccessManager* networkAccessManager();
...
protected:
Manager();
~Manager();
...
QNetworkAccessManager _networkAccessManager;
};
Manager* Manager::sharedManager()
{
QMutexLocker lock(&managerMutex);
static Manager manager;
return &manager;
}
Manager::Manager() :
_networkAccessManager()
{
...
}
Manager::~Manager()
{
}
Is there any obvious reason for this crash to happen randomly at program
termination?
Thanks,
Regards,
Nuno Santos
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