Hi all,
In a bit of pickle here with app segfaulting whenever I use either prepare() or exec() methods of QSqlQuery .. :S
My app creates a unique database connection for each thread it spawns (working for everything else...)
The problematic code:
QSqlQuery query ( this->connAvl->db );
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db is a pointer to the database object from another class so it should be passing the correct connection... As a matter of fact on another method of the class I use the exact same code with no problems! :S
whenever I use:
query.prepare("INSERT INTO garmin_packets (zulu_timestamp, unit_imei, packet_id, fmi_packet_id, unique_id, driver_idx, driver_status) "
"VALUES (?, ?, ?, ?, ?, ?, ?)");
query.prepare("INSERT INTO garmin_packets (zulu_timestamp, unit_imei, packet_id, fmi_packet_id, unique_id, driver_idx, driver_status) "
"VALUES (?, ?, ?, ?, ?, ?, ?)");
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Application segfaults with
==26283== Invalid read of size 8
==26283== at 0x4C288A0
: QSqlResult::isForwardOnly() const (qsqlresult.
cpp:551) ==26283== by 0x4C1A94F
: QSqlQuery::isForwardOnly() const (qsqlquery.
cpp:803) ==26283== by 0x41D105: GarminFmi::d607_driver_status_update(QDataStream&) (garminfmi.cpp:613)
==26283== by 0x41F89D: GarminFmi::parseFmiPacket() (garminfmi.cpp:162)
==26283== by 0x418B6B: TeltonikaUnit::parseDataField(unsigned char, QDataStream&) (teltonikaunit.cpp:467)
==26283== by 0x418FA2: TeltonikaUnit::parseData(QByteArray&) (teltonikaunit.cpp:408)
==26283== by 0x419AE7: TeltonikaUnit::incomingData() (teltonikaunit.cpp:277)
==26283== by 0x420B58
: TeltonikaUnit
::qt_metacall(QMetaObject::Call,
int,
void**) (moc_teltonikaunit.
cpp:86) ==26283== by 0x4EF7D37: QAbstractSocketPrivate::canReadNotification() (qabstractsocket.cpp:626)
==26283== by 0x4EE6540
: QReadNotifier
::event(QEvent*) (qnativesocketengine.
cpp:1094) ==26283== Address 0x8 is not stack'd, malloc'd or (recently) free'd
==26283==
==26283== Process terminating with default action of signal 11 (SIGSEGV)
==26283== Access not within mapped region at address 0x8
==26283== at 0x4C288A0: QSqlResult::isForwardOnly() const (qsqlresult.cpp:551)
==26283== by 0x4C1A94F: QSqlQuery::isForwardOnly() const (qsqlquery.cpp:803)
==26283== by 0x4C1BC02: QSqlQuery::prepare(QString const&) (qsqlquery.cpp:895)
==26283== by 0x41D105: GarminFmi::d607_driver_status_update(QDataStream&) (garminfmi.cpp:613)
==26283== by 0x41F89D: GarminFmi::parseFmiPacket() (garminfmi.cpp:162)
==26283== by 0x418B6B: TeltonikaUnit::parseDataField(unsigned char, QDataStream&) (teltonikaunit.cpp:467)
==26283== by 0x418FA2: TeltonikaUnit::parseData(QByteArray&) (teltonikaunit.cpp:408)
==26283== by 0x419AE7: TeltonikaUnit::incomingData() (teltonikaunit.cpp:277)
==26283== by 0x420B58: TeltonikaUnit::qt_metacall(QMetaObject::Call, int, void**) (moc_teltonikaunit.cpp:86)
==26283== by 0x53089C9: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject.cpp:3285)
==26283== by 0x4EF7D37: QAbstractSocketPrivate::canReadNotification() (qabstractsocket.cpp:626)
==26283== by 0x4EE6540: QReadNotifier::event(QEvent*) (qnativesocketengine.cpp:1094)
==26283== Invalid read of size 8
==26283== at 0x4C288A0: QSqlResult::isForwardOnly() const (qsqlresult.cpp:551)
==26283== by 0x4C1A94F: QSqlQuery::isForwardOnly() const (qsqlquery.cpp:803)
==26283== by 0x4C1BC02: QSqlQuery::prepare(QString const&) (qsqlquery.cpp:895)
==26283== by 0x41D105: GarminFmi::d607_driver_status_update(QDataStream&) (garminfmi.cpp:613)
==26283== by 0x41F89D: GarminFmi::parseFmiPacket() (garminfmi.cpp:162)
==26283== by 0x418B6B: TeltonikaUnit::parseDataField(unsigned char, QDataStream&) (teltonikaunit.cpp:467)
==26283== by 0x418FA2: TeltonikaUnit::parseData(QByteArray&) (teltonikaunit.cpp:408)
==26283== by 0x419AE7: TeltonikaUnit::incomingData() (teltonikaunit.cpp:277)
==26283== by 0x420B58: TeltonikaUnit::qt_metacall(QMetaObject::Call, int, void**) (moc_teltonikaunit.cpp:86)
==26283== by 0x53089C9: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject.cpp:3285)
==26283== by 0x4EF7D37: QAbstractSocketPrivate::canReadNotification() (qabstractsocket.cpp:626)
==26283== by 0x4EE6540: QReadNotifier::event(QEvent*) (qnativesocketengine.cpp:1094)
==26283== Address 0x8 is not stack'd, malloc'd or (recently) free'd
==26283==
==26283== Process terminating with default action of signal 11 (SIGSEGV)
==26283== Access not within mapped region at address 0x8
==26283== at 0x4C288A0: QSqlResult::isForwardOnly() const (qsqlresult.cpp:551)
==26283== by 0x4C1A94F: QSqlQuery::isForwardOnly() const (qsqlquery.cpp:803)
==26283== by 0x4C1BC02: QSqlQuery::prepare(QString const&) (qsqlquery.cpp:895)
==26283== by 0x41D105: GarminFmi::d607_driver_status_update(QDataStream&) (garminfmi.cpp:613)
==26283== by 0x41F89D: GarminFmi::parseFmiPacket() (garminfmi.cpp:162)
==26283== by 0x418B6B: TeltonikaUnit::parseDataField(unsigned char, QDataStream&) (teltonikaunit.cpp:467)
==26283== by 0x418FA2: TeltonikaUnit::parseData(QByteArray&) (teltonikaunit.cpp:408)
==26283== by 0x419AE7: TeltonikaUnit::incomingData() (teltonikaunit.cpp:277)
==26283== by 0x420B58: TeltonikaUnit::qt_metacall(QMetaObject::Call, int, void**) (moc_teltonikaunit.cpp:86)
==26283== by 0x53089C9: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject.cpp:3285)
==26283== by 0x4EF7D37: QAbstractSocketPrivate::canReadNotification() (qabstractsocket.cpp:626)
==26283== by 0x4EE6540: QReadNotifier::event(QEvent*) (qnativesocketengine.cpp:1094)
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Sorry for the long dump... 
Now I've tested if the database was open ... no problems there...
Am I missing something altogether obvious?!
Any help appreciated 
QSqlQuery segfault
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