==23988== Thread 3:
==23988== Invalid read of size 4
==23988==    at 0x9C07F7A: QBasicAtomicInteger<int>::load() const (qgenericatomic.h:98)
==23988==    by 0x9E5EDF6: QQmlDataBlob::ThreadData::setProgress(unsigned char) (qqmltypeloader.cpp:730)
==23988==    by 0x9E54589: QQmlDataLoader::loadThread(QQmlDataBlob*) (qqmltypeloader.cpp:1077)
==23988==    by 0x9E53CBA: QQmlDataLoader::load(QQmlDataBlob*, QQmlDataLoader::Mode) (qqmltypeloader.cpp:939)
==23988==    by 0x9E56FC2: QQmlTypeLoader::getType(QUrl const&, QQmlDataLoader::Mode) (qqmltypeloader.cpp:1619)
==23988==    by 0x9E5C39C: QQmlTypeData::resolveTypes() (qqmltypeloader.cpp:2465)
==23988==    by 0x9E5B493: QQmlTypeData::allDependenciesDone() (qqmltypeloader.cpp:2325)
==23988==    by 0x9E54ED4: QQmlDataLoader::setData(QQmlDataBlob*, QQmlDataBlob::Data const&) (qqmltypeloader.cpp:1214)
==23988==    by 0x9E54E07: QQmlDataLoader::setData(QQmlDataBlob*, QQmlFile*) (qqmltypeloader.cpp:1203)
==23988==    by 0x9E545E5: QQmlDataLoader::loadThread(QQmlDataBlob*) (qqmltypeloader.cpp:1081)
==23988==    by 0x9E53CBA: QQmlDataLoader::load(QQmlDataBlob*, QQmlDataLoader::Mode) (qqmltypeloader.cpp:939)
==23988==    by 0x9E56FC2: QQmlTypeLoader::getType(QUrl const&, QQmlDataLoader::Mode) (qqmltypeloader.cpp:1619)
==23988==    by 0x9E5C39C: QQmlTypeData::resolveTypes() (qqmltypeloader.cpp:2465)
==23988==    by 0x9E5B493: QQmlTypeData::allDependenciesDone() (qqmltypeloader.cpp:2325)
==23988==    by 0x9E54ED4: QQmlDataLoader::setData(QQmlDataBlob*, QQmlDataBlob::Data const&) (qqmltypeloader.cpp:1214)
==23988==    by 0x9E54E07: QQmlDataLoader::setData(QQmlDataBlob*, QQmlFile*) (qqmltypeloader.cpp:1203)
==23988==    by 0x9E545E5: QQmlDataLoader::loadThread(QQmlDataBlob*) (qqmltypeloader.cpp:1081)
==23988==    by 0x9E53CBA: QQmlDataLoader::load(QQmlDataBlob*, QQmlDataLoader::Mode) (qqmltypeloader.cpp:939)
==23988==    by 0x9E56FC2: QQmlTypeLoader::getType(QUrl const&, QQmlDataLoader::Mode) (qqmltypeloader.cpp:1619)
==23988==    by 0x9E5C39C: QQmlTypeData::resolveTypes() (qqmltypeloader.cpp:2465)
==23988==  Address 0x2abf86ec is 12 bytes inside a block of size 208 free'd
==23988==    at 0x4C28FAC: operator delete(void*) (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==23988==    by 0x9E59797: QQmlTypeData::~QQmlTypeData() (qqmltypeloader.cpp:2073)
==23988==    by 0x9C1B1A7: QQmlRefCount::destroy() (qqmlrefcount_p.h:133)
==23988==    by 0x9C1B17A: QQmlRefCount::release() (qqmlrefcount_p.h:123)
==23988==    by 0x9E590BE: QQmlTypeLoader::clearCache() (qqmltypeloader.cpp:1992)
==23988==    by 0x9E1677B: QQmlEngine::clearComponentCache() (qqmlengine.cpp:952)
==23988==    by 0x43B2C8: SlideDeckController::reloadSlides(QQuickWindow*) (SlideDeckController.cpp:434)
==23988==    by 0x46DDB4: SlideDeckController::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (moc_SlideDeckController.cpp:209)
==23988==    by 0x46E05C: SlideDeckController::qt_metacall(QMetaObject::Call, int, void**) (moc_SlideDeckController.cpp:286)
==23988==    by 0xBC00EF6: QMetaObject::metacall(QObject*, QMetaObject::Call, int, void**) (qmetaobject.cpp:308)
==23988==    by 0x9DE1C67: CallMethod(QObject*, int, int, int, int*, QV8Engine*, QV4::CallData*) (qv4qobjectwrapper.cpp:1133)
==23988==    by 0x9DE2778: CallPrecise(QObject*, QQmlPropertyData const&, QV8Engine*, QV4::CallData*) (qv4qobjectwrapper.cpp:1385)
==23988==    by 0x9DE4DFB: QV4::QObjectMethod::callInternal(QV4::CallData*) (qv4qobjectwrapper.cpp:1874)
==23988==    by 0x9DE48BA: QV4::QObjectMethod::call(QV4::Managed*, QV4::CallData*) (qv4qobjectwrapper.cpp:1803)
==23988==    by 0x9CE11FD: QV4::Object::call(QV4::CallData*) (qv4object_p.h:270)
==23988==    by 0x9DF6E33: QV4::Runtime::callProperty(QV4::ExecutionContext*, QV4::StringRef, QV4::CallDataRef) (qv4runtime.cpp:938)
==23988==    by 0x9DECBE5: QV4::Moth::VME::run(QV4::ExecutionContext*, unsigned char const*, void***) (qv4vme_moth.cpp:369)
==23988==    by 0x9DF08C9: QV4::Moth::VME::exec(QV4::ExecutionContext*, unsigned char const*) (qv4vme_moth.cpp:738)
==23988==    by 0x9D8CA84: QV4::SimpleScriptFunction::call(QV4::Managed*, QV4::CallData*) (qv4functionobject.cpp:529)
==23988==    by 0x9CE11FD: QV4::Object::call(QV4::CallData*) (qv4object_p.h:270)