Details
P1: Critical Description
QByteDataBuffer::read() should check buffers.isEmpty() before using buffers.first(). In the case where the buffer is empty (which seems to happen sometimes when disconnectiong), this leads to triggering a fatal assertion.
See following stack trace:
QtCored4.dll!qt_message_output(QtMsgType msgType=QtFatalMsg, const char * buf=0x0a199b00) Zeile 2195 C++ QtCored4.dll!qt_message(QtMsgType msgType=QtFatalMsg, const char * msg=0x67292060, char * ap=0x00e4e76c) Zeile 2296 + 0x12 Bytes C++ QtCored4.dll!qFatal(const char * msg=0x67292060, ...) Zeile 2479 + 0xf Bytes C++ QtCored4.dll!qt_assert(const char * assertion=0x640f44a8, const char * file=0x640f44b8, int line=263) Zeile 2013 + 0x16 Bytes C++ QtNetworkd4.dll!QList<QByteArray>::first() Zeile 263 + 0x2d Bytes C++ > QtNetworkd4.dll!QByteDataBuffer::read() Zeile 109 + 0x8 Bytes C++ QtNetworkd4.dll!QHttpNetworkReply::readAny() Zeile 185 + 0x12 Bytes C++ QtNetworkd4.dll!QNetworkAccessHttpBackend::readFromHttp() Zeile 683 + 0xf Bytes C++ QtNetworkd4.dll!QNetworkAccessHttpBackend::replyReadyRead() Zeile 669 C++ QtNetworkd4.dll!QNetworkAccessHttpBackend::qt_metacall(QMetaObject::Call _c=InvokeMetaMethod, int _id=0, void * * _a=0x00e4e8ec) Zeile 85 + 0x8 Bytes C++ QtCored4.dll!QMetaObject::metacall(QObject * object=0x0468ce10, QMetaObject::Call cl=InvokeMetaMethod, int idx=13, void * * argv=0x00e4e8ec) Zeile 238 C++ QtCored4.dll!QMetaObject::activate(QObject * sender=0x084e7c28, const QMetaObject * m=0x6415cfac, int local_signal_index=1, void * * argv=0x00000000) Zeile 3285 + 0x27 Bytes C++ QtNetworkd4.dll!QHttpNetworkReply::readyRead() Zeile 113 + 0x13 Bytes C++ QtNetworkd4.dll!QHttpNetworkConnectionChannel::expand(bool dataComplete=true) Zeile 528 C++ QtNetworkd4.dll!QHttpNetworkConnectionChannel::allDone() Zeile 555 C++ QtNetworkd4.dll!QHttpNetworkConnectionChannel::_q_receiveReply() Zeile 291 C++ QtNetworkd4.dll!QHttpNetworkConnectionChannel::_q_disconnected() Zeile 793 C++ QtNetworkd4.dll!QHttpNetworkConnectionChannel::qt_metacall(QMetaObject::Call _c=InvokeMetaMethod, int _id=3, void * * _a=0x00e4ed00) Zeile 93 + 0x8 Bytes C++ QtCored4.dll!QMetaObject::metacall(QObject * object=0x099f822c, QMetaObject::Call cl=InvokeMetaMethod, int idx=7, void * * argv=0x00e4ed00) Zeile 238 C++ QtCored4.dll!QMetaObject::activate(QObject * sender=0x0dd133a0, const QMetaObject * m=0x6415a6b4, int local_signal_index=2, void * * argv=0x00000000) Zeile 3285 + 0x27 Bytes C++ QtNetworkd4.dll!QAbstractSocket::disconnected() Zeile 142 + 0x13 Bytes C++ QtNetworkd4.dll!QAbstractSocket::disconnectFromHostImplementation() Zeile 2414 C++ QtNetworkd4.dll!QAbstractSocket::qt_metacall(QMetaObject::Call _c=InvokeMetaMethod, int _id=10, void * * _a=0x00e4ee4c) Zeile 114 + 0x8 Bytes C++ QtNetworkd4.dll!QTcpSocket::qt_metacall(QMetaObject::Call _c=InvokeMetaMethod, int _id=18, void * * _a=0x00e4ee4c) Zeile 64 + 0x14 Bytes C++ QtCored4.dll!QMetaObject::metacall(QObject * object=0x0dd133a0, QMetaObject::Call cl=InvokeMetaMethod, int idx=18, void * * argv=0x00e4ee4c) Zeile 238 C++ QtCored4.dll!QMetaMethod::invoke(QObject * object=0x0dd133a0, Qt::ConnectionType connectionType=DirectConnection, QGenericReturnArgument returnValue={...}, QGenericArgument val0={...}, QGenericArgument val1={...}, QGenericArgument val2={...}, QGenericArgument val3={...}, QGenericArgument val4={...}, QGenericArgument val5={...}, QGenericArgument val6={...}, QGenericArgument val7={...}, QGenericArgument val8={...}, QGenericArgument val9={...}) Zeile 1533 + 0x13 Bytes C++ QtCored4.dll!QMetaObject::invokeMethod(QObject * obj=0x0dd133a0, const char * member=0x6410022c, Qt::ConnectionType type=DirectConnection, QGenericReturnArgument ret={...}, QGenericArgument val0={...}, QGenericArgument val1={...}, QGenericArgument val2={...}, QGenericArgument val3={...}, QGenericArgument val4={...}, QGenericArgument val5={...}, QGenericArgument val6={...}, QGenericArgument val7={...}, QGenericArgument val8={...}, QGenericArgument val9={...}) Zeile 1113 + 0x68 Bytes C++ QtCored4.dll!QMetaObject::invokeMethod(QObject * obj=0x0dd133a0, const char * member=0x6410022c, Qt::ConnectionType type=DirectConnection, QGenericArgument val0={...}, QGenericArgument val1={...}, QGenericArgument val2={...}, QGenericArgument val3={...}, QGenericArgument val4={...}, QGenericArgument val5={...}, QGenericArgument val6={...}, QGenericArgument val7={...}, QGenericArgument val8={...}, QGenericArgument val9={...}) Zeile 398 + 0x74 Bytes C++ QtNetworkd4.dll!QAbstractSocket::disconnectFromHost() Zeile 2315 + 0xd9 Bytes C++ QtNetworkd4.dll!QAbstractSocket::close() Zeile 2296 C++ QtNetworkd4.dll!QHttpNetworkConnectionPrivate::~QHttpNetworkConnectionPrivate() Zeile 108 C++ QtNetworkd4.dll!QHttpNetworkConnectionPrivate::`scalar deleting destructor'() + 0xf Bytes C++ QtCored4.dll!QScopedPointerDeleter<QObjectData>::cleanup(QObjectData * pointer=0x08bac480) Zeile 62 + 0x20 Bytes C++ QtCored4.dll!QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >::~QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >() Zeile 100 + 0x9 Bytes C++ QtCored4.dll!QObject::~QObject() Zeile 992 + 0x12 Bytes C++ QtNetworkd4.dll!QHttpNetworkConnection::~QHttpNetworkConnection() Zeile 774 + 0x9 Bytes C++ QtNetworkd4.dll!QNetworkAccessCachedHttpConnection::~QNetworkAccessCachedHttpConnection() + 0x47 Bytes C++ QtNetworkd4.dll!QNetworkAccessCachedHttpConnection::`scalar deleting destructor'() + 0xf Bytes C++ QtNetworkd4.dll!QNetworkAccessCachedHttpConnection::dispose() Zeile 290 + 0x24 Bytes C++ QtNetworkd4.dll!QNetworkAccessCache::clear() Zeile 127 C++ QtNetworkd4.dll!QNetworkAccessCache::~QNetworkAccessCache() Zeile 114 C++ QtNetworkd4.dll!QNetworkAccessManagerPrivate::~QNetworkAccessManagerPrivate() Zeile 999 + 0xb Bytes C++ QtNetworkd4.dll!QNetworkAccessManagerPrivate::`scalar deleting destructor'() + 0xf Bytes C++ QtCored4.dll!QScopedPointerDeleter<QObjectData>::cleanup(QObjectData * pointer=0x0e388dd0) Zeile 62 + 0x20 Bytes C++ QtCored4.dll!QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >::~QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >() Zeile 100 + 0x9 Bytes C++ QtCored4.dll!QObject::~QObject() Zeile 992 + 0x12 Bytes C++ QtNetworkd4.dll!QNetworkAccessManager::~QNetworkAccessManager() Zeile 363 + 0x10 Bytes C++ QtWebKitd4.dll!QNetworkAccessManager::`scalar deleting destructor'() + 0x10 Bytes C++ QtCored4.dll!QObjectPrivate::deleteChildren() Zeile 1978 + 0x24 Bytes C++ QtCored4.dll!QObject::~QObject() Zeile 977 C++ QtWebKitd4.dll!QWebPage::~QWebPage() Zeile 1720 + 0x10 Bytes C++