Another round of 0->nullptr cleanup

Change-Id: Ic8db7dc252f8fea46eb5a4f334726d6c7f4645a6
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>

src/concurrent/qtconcurrentthreadengine.cpp

@@ -161,7 +161,7 @@ bool ThreadEngineBarrier::releaseUnlessLast()
 }
 
 ThreadEngineBase::ThreadEngineBase(QThreadPool *pool)
-    : futureInterface(0), threadPool(pool)
+    : futureInterface(nullptr), threadPool(pool)
 {
     setAutoDelete(false);
 }
@@ -242,7 +242,7 @@ void ThreadEngineBase::waitForResume()
 bool ThreadEngineBase::isProgressReportingEnabled()
 {
     // If we don't have a QFuture, there is no-one to report the progress to.
-    return (futureInterface != 0);
+    return (futureInterface != nullptr);
 }
 
 void ThreadEngineBase::setProgressValue(int progress)
@@ -278,7 +278,7 @@ void ThreadEngineBase::startThreads()
 
 void ThreadEngineBase::threadExit()
 {
-    const bool asynchronous = futureInterface != 0;
+    const bool asynchronous = (futureInterface != nullptr);
     const int lastThread = (barrier.release() == 0);
 
     if (lastThread && asynchronous)

src/corelib/animation/qabstractanimation.cpp

@@ -235,7 +235,7 @@ QUnifiedTimer *QUnifiedTimer::instance(bool create)
         inst = new QUnifiedTimer;
         unifiedTimer()->setLocalData(inst);
     } else {
-        inst = unifiedTimer() ? unifiedTimer()->localData() : 0;
+        inst = unifiedTimer() ? unifiedTimer()->localData() : nullptr;
     }
     return inst;
 }
@@ -565,7 +565,7 @@ QAnimationTimer *QAnimationTimer::instance(bool create)
         inst = new QAnimationTimer;
         animationTimer()->setLocalData(inst);
     } else {
-        inst = animationTimer() ? animationTimer()->localData() : 0;
+        inst = animationTimer() ? animationTimer()->localData() : nullptr;
     }
 #else
     Q_UNUSED(create);

src/corelib/animation/qpropertyanimation.cpp

@@ -271,7 +271,7 @@ void QPropertyAnimation::updateState(QAbstractAnimation::State newState,
         QPropertyAnimationPair key(d->targetValue, d->propertyName);
         if (newState == Running) {
             d->updateMetaProperty();
-            animToStop = hash.value(key, 0);
+            animToStop = hash.value(key, nullptr);
             hash.insert(key, this);
             locker.unlock();
             // update the default start value

src/corelib/kernel/qabstracteventdispatcher.cpp

@@ -429,7 +429,7 @@ void QAbstractEventDispatcher::installNativeEventFilter(QAbstractNativeEventFilt
     Q_D(QAbstractEventDispatcher);
 
     // clean up unused items in the list
-    d->eventFilters.removeAll(0);
+    d->eventFilters.removeAll(nullptr);
     d->eventFilters.removeAll(filterObj);
     d->eventFilters.prepend(filterObj);
 }
@@ -452,7 +452,7 @@ void QAbstractEventDispatcher::removeNativeEventFilter(QAbstractNativeEventFilte
     Q_D(QAbstractEventDispatcher);
     for (int i = 0; i < d->eventFilters.count(); ++i) {
         if (d->eventFilters.at(i) == filter) {
-            d->eventFilters[i] = 0;
+            d->eventFilters[i] = nullptr;
             break;
         }
     }

src/corelib/kernel/qmetaobjectbuilder.cpp

@@ -1669,7 +1669,7 @@ static const QMetaObject *resolveClassName
     if (name == QByteArray("QObject"))
         return &QObject::staticMetaObject;
     else
-        return references.value(name, 0);
+        return references.value(name, nullptr);
 }
 
 /*!

src/corelib/kernel/qobject.cpp

@@ -2035,7 +2035,7 @@ void QObjectPrivate::deleteChildren()
     // delete siblings
     for (int i = 0; i < children.count(); ++i) {
         currentChildBeingDeleted = children.at(i);
-        children[i] = 0;
+        children[i] = nullptr;
         delete currentChildBeingDeleted;
     }
     children.clear();
@@ -2076,7 +2076,7 @@ void QObjectPrivate::setParent_helper(QObject *o)
             if (index < 0) {
                 // we're probably recursing into setParent() from a ChildRemoved event, don't do anything
             } else if (parentD->isDeletingChildren) {
-                parentD->children[index] = 0;
+                parentD->children[index] = nullptr;
             } else {
                 parentD->children.removeAt(index);
                 if (sendChildEvents && parentD->receiveChildEvents) {

src/corelib/plugin/qlibrary.cpp

@@ -419,7 +419,7 @@ inline void QLibraryStore::cleanup()
 #endif
             }
             delete lib;
-            it.value() = 0;
+            it.value() = nullptr;
         }
     }
 

src/corelib/text/qunicodetools.cpp

@@ -1323,8 +1323,8 @@ typedef int (*th_brk_def) (const unsigned char*, int*, size_t);
 typedef size_t (*th_next_cell_def) (const unsigned char *, size_t, struct thcell_t *, int);
 
 /* libthai related function handles */
-static th_brk_def th_brk = 0;
+static th_brk_def th_brk = nullptr;
-static th_next_cell_def th_next_cell = 0;
+static th_next_cell_def th_next_cell = nullptr;
 
 static int init_libthai() {
     static bool initialized = false;
@@ -1363,7 +1363,7 @@ static void thaiAssignAttributes(const ushort *string, uint len, QCharAttributes
 {
     char s[128];
     char *cstr = s;
-    int *break_positions = 0;
+    int *break_positions = nullptr;
     int brp[128];
     int brp_size = 0;
     uint numbreaks, i, j, cell_length;

src/corelib/thread/qthreadstorage.cpp

@@ -92,7 +92,7 @@ QThreadStorageData::QThreadStorageData(void (*func)(void *))
         return;
     }
     for (id = 0; id < destr->count(); id++) {
-        if (destr->at(id) == 0)
+        if (destr->at(id) == nullptr)
             break;
     }
     if (id == destr->count()) {
@@ -108,7 +108,7 @@ QThreadStorageData::~QThreadStorageData()
     DEBUG_MSG("QThreadStorageData: Released id %d", id);
     QMutexLocker locker(&destructorsMutex);
     if (destructors())
-        (*destructors())[id] = 0;
+        (*destructors())[id] = nullptr;
 }
 
 void **QThreadStorageData::get() const
@@ -152,7 +152,7 @@ void **QThreadStorageData::set(void *p)
 
         QMutexLocker locker(&destructorsMutex);
         DestructorMap *destr = destructors();
-        void (*destructor)(void *) = destr ? destr->value(id) : 0;
+        void (*destructor)(void *) = destr ? destr->value(id) : nullptr;
         locker.unlock();
 
         void *q = value;
@@ -201,7 +201,7 @@ void QThreadStorageData::finish(void **p)
 
         if (tls->size() > i) {
             //re reset the tls in case it has been recreated by its own destructor.
-            (*tls)[i] = 0;
+            (*tls)[i] = nullptr;
         }
     }
     tls->clear();

src/corelib/tools/qsharedpointer.cpp

@@ -1567,7 +1567,7 @@ void QtSharedPointer::internalSafetyCheckAdd(const void *d_ptr, const volatile v
 
     //qDebug("Adding d=%p value=%p", d_ptr, ptr);
 
-    const void *other_d_ptr = kp->dataPointers.value(ptr, 0);
+    const void *other_d_ptr = kp->dataPointers.value(ptr, nullptr);
     if (Q_UNLIKELY(other_d_ptr)) {
 #  ifdef BACKTRACE_SUPPORTED
         printBacktrace(knownPointers()->dPointers.value(other_d_ptr).backtrace);

src/dbus/qdbus_symbols.cpp

@@ -133,7 +133,7 @@ void (*qdbus_resolve_conditionally(const char *name))()
 #else
     Q_UNUSED(name);
 #endif
-    return 0;
+    return nullptr;
 }
 
 void (*qdbus_resolve_me(const char *name))()
@@ -149,7 +149,7 @@ void (*qdbus_resolve_me(const char *name))()
     return ptr;
 #else
     Q_UNUSED(name);
-    return 0;
+    return nullptr;
 #endif
 }
 

src/dbus/qdbusconnection.cpp

@@ -99,7 +99,7 @@ QDBusConnectionPrivate *QDBusConnectionManager::busConnection(QDBusConnection::B
 
 QDBusConnectionPrivate *QDBusConnectionManager::connection(const QString &name) const
 {
-    return connectionHash.value(name, 0);
+    return connectionHash.value(name, nullptr);
 }
 
 void QDBusConnectionManager::removeConnection(const QString &name)

src/dbus/qdbusintegrator.cpp

@@ -930,7 +930,7 @@ void QDBusConnectionPrivate::deliverCall(QObject *object, int /*flags*/, const Q
     // let's create the parameter list
 
     // first one is the return type -- add it below
-    params.append(0);
+    params.append(nullptr);
 
     // add the input parameters
     int i;
@@ -1186,7 +1186,7 @@ bool QDBusConnectionPrivate::handleError(const QDBusErrorInternal &error)
 void QDBusConnectionPrivate::timerEvent(QTimerEvent *e)
 {
     {
-        DBusTimeout *timeout = timeouts.value(e->timerId(), 0);
+        DBusTimeout *timeout = timeouts.value(e->timerId(), nullptr);
         if (timeout)
             q_dbus_timeout_handle(timeout);
     }
@@ -2582,7 +2582,7 @@ QDBusConnectionPrivate::findMetaObject(const QString &service, const QString &pa
     // service must be a unique connection name
     if (!interface.isEmpty()) {
         QDBusReadLocker locker(FindMetaObject1Action, this);
-        QDBusMetaObject *mo = cachedMetaObjects.value(interface, 0);
+        QDBusMetaObject *mo = cachedMetaObjects.value(interface, nullptr);
         if (mo)
             return mo;
     }
@@ -2599,7 +2599,7 @@ QDBusConnectionPrivate::findMetaObject(const QString &service, const QString &pa
     QDBusWriteLocker locker(FindMetaObject2Action, this);
     QDBusMetaObject *mo = nullptr;
     if (!interface.isEmpty())
-        mo = cachedMetaObjects.value(interface, 0);
+        mo = cachedMetaObjects.value(interface, nullptr);
     if (mo)
         // maybe it got created when we switched from read to write lock
         return mo;

src/gui/accessible/linux/atspiadaptor.cpp

@@ -858,7 +858,7 @@ QAccessibleInterface *AtSpiAdaptor::interfaceFromPath(const QString& dbusPath) c
     QStringList parts = dbusPath.split(QLatin1Char('/'));
     if (parts.size() != 6) {
         qCDebug(lcAccessibilityAtspi) << "invalid path: " << dbusPath;
-        return 0;
+        return nullptr;
     }
 
     QString objectString = parts.at(5);
@@ -1613,7 +1613,7 @@ bool AtSpiAdaptor::componentInterface(QAccessibleInterface *interface, const QSt
         }
 
         QAccessibleInterface * childInterface(interface->childAt(x, y));
-        QAccessibleInterface * iface = 0;
+        QAccessibleInterface * iface = nullptr;
         while (childInterface) {
             iface = childInterface;
             childInterface = iface->childAt(x, y);
@@ -2301,7 +2301,7 @@ bool AtSpiAdaptor::tableInterface(QAccessibleInterface *interface, const QString
         connection.send(message.createReply(QVariant::fromValue(QDBusVariant(
             QVariant::fromValue(interface->tableInterface()->selectedRowCount())))));
     } else if (function == QLatin1String("GetSummary")) {
-        QAccessibleInterface * summary = interface->tableInterface() ? interface->tableInterface()->summary() : 0;
+        QAccessibleInterface *summary = interface->tableInterface() ? interface->tableInterface()->summary() : nullptr;
         QSpiObjectReference ref(connection, QDBusObjectPath(pathForInterface(summary)));
         connection.send(message.createReply(QVariant::fromValue(QDBusVariant(QVariant::fromValue(ref)))));
     } else if (function == QLatin1String("GetAccessibleAt")) {

src/gui/accessible/linux/qspiaccessiblebridge.cpp

@@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE
 */
 
 QSpiAccessibleBridge::QSpiAccessibleBridge()
-    : cache(0), dec(0), dbusAdaptor(0)
+    : cache(nullptr), dec(nullptr), dbusAdaptor(nullptr)
 {
     dbusConnection = new DBusConnection();
     connect(dbusConnection, SIGNAL(enabledChanged(bool)), this, SLOT(enabledChanged(bool)));

src/gui/image/qimage_conversions.cpp

@@ -224,8 +224,8 @@ void convert_generic(QImageData *dest, const QImageData *src, Qt::ImageConversio
                     buffer = reinterpret_cast<uint *>(destData) + x;
                 else
                     l = qMin(l, BufferSize);
-                const uint *ptr = fetch(buffer, srcData, x, l, 0, ditherPtr);
+                const uint *ptr = fetch(buffer, srcData, x, l, nullptr, ditherPtr);
-                store(destData, ptr, x, l, 0, ditherPtr);
+                store(destData, ptr, x, l, nullptr, ditherPtr);
                 x += l;
             }
             srcData += src->bytes_per_line;

src/gui/image/qimagereader.cpp

@@ -538,7 +538,7 @@ bool QImageReaderPrivate::initHandler()
 
     // probe the file extension
     if (deleteDevice && !device->isOpen() && !device->open(QIODevice::ReadOnly) && autoDetectImageFormat) {
-        Q_ASSERT(qobject_cast<QFile*>(device) != 0); // future-proofing; for now this should always be the case, so...
+        Q_ASSERT(qobject_cast<QFile*>(device) != nullptr); // future-proofing; for now this should always be the case, so...
         QFile *file = static_cast<QFile *>(device);
 
         if (file->error() == QFileDevice::ResourceError) {

src/gui/itemmodels/qstandarditemmodel.cpp

@@ -189,7 +189,7 @@ void QStandardItemPrivate::childDeleted(QStandardItem *child)
     int index = childIndex(child);
     Q_ASSERT(index != -1);
     const auto modelIndex = child->index();
-    children.replace(index, 0);
+    children.replace(index, nullptr);
     emit model->dataChanged(modelIndex, modelIndex);
 }
 
@@ -481,7 +481,7 @@ bool QStandardItemPrivate::insertRows(int row, const QList<QStandardItem*> &item
         rows += count;
         int index = childIndex(row, 0);
         if (index != -1)
-            children.insert(index, columnCount() * count, 0);
+            children.insert(index, columnCount() * count, nullptr);
     }
     for (int i = 0; i < items.count(); ++i) {
         QStandardItem *item = items.at(i);
@@ -511,7 +511,7 @@ bool QStandardItemPrivate::insertRows(int row, int count, const QList<QStandardI
         rows += count;
         int index = childIndex(row, 0);
         if (index != -1)
-            children.insert(index, columnCount() * count, 0);
+            children.insert(index, columnCount() * count, nullptr);
     }
     if (!items.isEmpty()) {
         int index = childIndex(row, 0);
@@ -555,7 +555,7 @@ bool QStandardItemPrivate::insertColumns(int column, int count, const QList<QSta
         columns += count;
         int index = childIndex(0, column);
         for (int row = 0; row < rowCount(); ++row) {
-            children.insert(index, count, 0);
+            children.insert(index, count, nullptr);
             index += columnCount();
         }
     }
@@ -661,7 +661,7 @@ void QStandardItemModelPrivate::rowsInserted(QStandardItem *parent,
 {
     Q_Q(QStandardItemModel);
     if (parent == root.data())
-        rowHeaderItems.insert(row, count, 0);
+        rowHeaderItems.insert(row, count, nullptr);
     q->endInsertRows();
 }
 
@@ -673,7 +673,7 @@ void QStandardItemModelPrivate::columnsInserted(QStandardItem *parent,
 {
     Q_Q(QStandardItemModel);
     if (parent == root.data())
-        columnHeaderItems.insert(column, count, 0);
+        columnHeaderItems.insert(column, count, nullptr);
     q->endInsertColumns();
 }
 
@@ -1881,7 +1881,7 @@ QStandardItem *QStandardItem::takeChild(int row, int column)
         item = d->children.at(index);
         if (item)
             item->d_func()->setParentAndModel(nullptr, nullptr);
-        d->children.replace(index, 0);
+        d->children.replace(index, nullptr);
     }
     return item;
 }
@@ -2195,9 +2195,9 @@ QStandardItemModel::QStandardItemModel(int rows, int columns, QObject *parent)
     Q_D(QStandardItemModel);
     d->init();
     d->root->insertColumns(0, columns);
-    d->columnHeaderItems.insert(0, columns, 0);
+    d->columnHeaderItems.insert(0, columns, nullptr);
     d->root->insertRows(0, rows);
-    d->rowHeaderItems.insert(0, rows, 0);
+    d->rowHeaderItems.insert(0, rows, nullptr);
     d->root->d_func()->setModel(this);
 }
 
@@ -2754,7 +2754,7 @@ QStandardItem *QStandardItemModel::takeHorizontalHeaderItem(int column)
     QStandardItem *headerItem = d->columnHeaderItems.at(column);
     if (headerItem) {
         headerItem->d_func()->setParentAndModel(nullptr, nullptr);
-        d->columnHeaderItems.replace(column, 0);
+        d->columnHeaderItems.replace(column, nullptr);
     }
     return headerItem;
 }
@@ -2776,7 +2776,7 @@ QStandardItem *QStandardItemModel::takeVerticalHeaderItem(int row)
     QStandardItem *headerItem = d->rowHeaderItems.at(row);
     if (headerItem) {
         headerItem->d_func()->setParentAndModel(nullptr, nullptr);
-        d->rowHeaderItems.replace(row, 0);
+        d->rowHeaderItems.replace(row, nullptr);
     }
     return headerItem;
 }

src/gui/kernel/qopenglcontext.cpp

@@ -1247,14 +1247,14 @@ void QOpenGLMultiGroupSharedResource::insert(QOpenGLContext *context, QOpenGLSha
 QOpenGLSharedResource *QOpenGLMultiGroupSharedResource::value(QOpenGLContext *context)
 {
     QOpenGLContextGroup *group = context->shareGroup();
-    return group->d_func()->m_resources.value(this, 0);
+    return group->d_func()->m_resources.value(this, nullptr);
 }
 
 QList<QOpenGLSharedResource *> QOpenGLMultiGroupSharedResource::resources() const
 {
     QList<QOpenGLSharedResource *> result;
     for (QList<QOpenGLContextGroup *>::const_iterator it = m_groups.constBegin(); it != m_groups.constEnd(); ++it) {
-        QOpenGLSharedResource *resource = (*it)->d_func()->m_resources.value(const_cast<QOpenGLMultiGroupSharedResource *>(this), 0);
+        QOpenGLSharedResource *resource = (*it)->d_func()->m_resources.value(const_cast<QOpenGLMultiGroupSharedResource *>(this), nullptr);
         if (resource)
             result << resource;
     }

src/gui/kernel/qopenglcontext_p.h

@@ -174,7 +174,7 @@ public:
         // Have to use our own mutex here, not the group's, since
         // m_groups has to be protected too against any concurrent access.
         QMutexLocker locker(&m_mutex);
-        T *resource = static_cast<T *>(group->d_func()->m_resources.value(this, 0));
+        T *resource = static_cast<T *>(group->d_func()->m_resources.value(this, nullptr));
         if (!resource) {
             resource = new T(context);
             insert(context, resource);

src/gui/kernel/qwindowsysteminterface_p.h

@@ -471,7 +471,7 @@ public:
         void prepend(WindowSystemEvent *e)
         { const QMutexLocker locker(&mutex); impl.prepend(e); }
         WindowSystemEvent *takeFirstOrReturnNull()
-        { const QMutexLocker locker(&mutex); return impl.empty() ? 0 : impl.takeFirst(); }
+        { const QMutexLocker locker(&mutex); return impl.empty() ? nullptr : impl.takeFirst(); }
         WindowSystemEvent *takeFirstNonUserInputOrReturnNull()
         {
             const QMutexLocker locker(&mutex);

src/gui/painting/qcompositionfunctions.cpp

@@ -3089,11 +3089,12 @@ CompositionFunctionSolid64 qt_functionForModeSolid64_C[] = {
         comp_func_solid_Difference_rgb64,
         comp_func_solid_Exclusion_rgb64,
 #else
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
 #endif
-        0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-        0, 0, 0, 0, 0, 0, 0, 0
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr
 };
 
 CompositionFunction qt_functionForMode_C[] = {
@@ -3164,11 +3165,12 @@ CompositionFunction64 qt_functionForMode64_C[] = {
         comp_func_Difference_rgb64,
         comp_func_Exclusion_rgb64,
 #else
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
 #endif
-        0, 0, 0, 0, 0, 0,
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr,
-        0, 0, 0, 0, 0, 0, 0, 0
+        nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr
 };
 
 QT_END_NAMESPACE

src/gui/painting/qpathsimplifier.cpp

@@ -880,9 +880,9 @@ void PathSimplifier::connectElements()
 #ifndef QT_NO_DEBUG
     for (int i = 0; i < m_elements.size(); ++i) {
         const Element *element = m_elements.at(i);
-        Q_ASSERT(element->next == 0 || element->next->previous == element);
+        Q_ASSERT(element->next == nullptr || element->next->previous == element);
-        Q_ASSERT(element->previous == 0 || element->previous->next == element);
+        Q_ASSERT(element->previous == nullptr || element->previous->next == element);
-        Q_ASSERT((element->next == 0) == (element->previous == 0));
+        Q_ASSERT((element->next == nullptr) == (element->previous == nullptr));
     }
 #endif
 }
@@ -1442,7 +1442,7 @@ bool PathSimplifier::elementIsLeftOf(const Element *left, const Element *right)
 QPair<PathSimplifier::RBNode *, PathSimplifier::RBNode *> PathSimplifier::outerBounds(const QPoint &point)
 {
     RBNode *current = m_elementList.root;
-    QPair<RBNode *, RBNode *> result(0, 0);
+    QPair<RBNode *, RBNode *> result(nullptr, nullptr);
 
     while (current) {
         const Element *element = current->data;

src/gui/painting/qpdf.cpp

@@ -3038,7 +3038,7 @@ void QPdfEnginePrivate::drawTextItem(const QPointF &p, const QTextItemInt &ti)
         noEmbed = true;
     }
 
-    QFontSubset *font = fonts.value(face_id, 0);
+    QFontSubset *font = fonts.value(face_id, nullptr);
     if (!font) {
         font = new QFontSubset(fe, requestObject());
         font->noEmbed = noEmbed;

src/gui/painting/qtriangulator.cpp

@@ -1061,7 +1061,7 @@ template <typename T>
 QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator<T>::ComplexToSimple::bounds(const QPodPoint &point) const
 {
     QRBTree<int>::Node *current = m_edgeList.root;
-    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(nullptr, nullptr);
     while (current) {
         const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
         const QPodPoint &v2 = m_parent->m_vertices.at(m_edges.at(current->data).upper());
@@ -1110,7 +1110,7 @@ template <typename T>
 QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> QTriangulator<T>::ComplexToSimple::outerBounds(const QPodPoint &point) const
 {
     QRBTree<int>::Node *current = m_edgeList.root;
-    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(0, 0);
+    QPair<QRBTree<int>::Node *, QRBTree<int>::Node *> result(nullptr, nullptr);
 
     while (current) {
         const QPodPoint &v1 = m_parent->m_vertices.at(m_edges.at(current->data).lower());
@@ -1309,7 +1309,7 @@ void QTriangulator<T>::ComplexToSimple::calculateIntersections()
         int vertex = (event.type == Event::Upper ? m_edges.at(event.edge).upper() : m_edges.at(event.edge).lower());
         QIntersectionPoint eventPoint = QT_PREPEND_NAMESPACE(qIntersectionPoint)(event.point);
 
-        if (range.first != 0) {
+        if (range.first != nullptr) {
             splitEdgeListRange(range.first, range.second, vertex, eventPoint);
             reorderEdgeListRange(range.first, range.second);
         }

src/gui/painting/webgradients.cpp

@@ -572,7 +572,7 @@ static Q_CONSTEXPR QGradient::QGradientData qt_preset_gradient_data[] = {
 static void *qt_preset_gradient_dummy()
 {
     union {void *p; uint i;};
-    p = 0;
+    p = nullptr;
     i |= uint(QGradient::ObjectMode);
     return p;
 }

src/gui/platform/unix/qeventdispatcher_glib.cpp

@@ -64,7 +64,7 @@ static gboolean userEventSourcePrepare(GSource *source, gint *timeout)
 
 static gboolean userEventSourceCheck(GSource *source)
 {
-    return userEventSourcePrepare(source, 0);
+    return userEventSourcePrepare(source, nullptr);
 }
 
 static gboolean userEventSourceDispatch(GSource *source, GSourceFunc, gpointer)
@@ -111,7 +111,7 @@ QPAEventDispatcherGlib::~QPAEventDispatcherGlib()
 
     g_source_destroy(&d->userEventSource->source);
     g_source_unref(&d->userEventSource->source);
-    d->userEventSource = 0;
+    d->userEventSource = nullptr;
 }
 
 bool QPAEventDispatcherGlib::processEvents(QEventLoop::ProcessEventsFlags flags)

src/gui/platform/unix/qgenericunixthemes.cpp

@@ -80,16 +80,16 @@ Q_DECLARE_LOGGING_CATEGORY(qLcTray)
 
 ResourceHelper::ResourceHelper()
 {
-    std::fill(palettes, palettes + QPlatformTheme::NPalettes, static_cast<QPalette *>(0));
+    std::fill(palettes, palettes + QPlatformTheme::NPalettes, static_cast<QPalette *>(nullptr));
-    std::fill(fonts, fonts + QPlatformTheme::NFonts, static_cast<QFont *>(0));
+    std::fill(fonts, fonts + QPlatformTheme::NFonts, static_cast<QFont *>(nullptr));
 }
 
 void ResourceHelper::clear()
 {
     qDeleteAll(palettes, palettes + QPlatformTheme::NPalettes);
     qDeleteAll(fonts, fonts + QPlatformTheme::NFonts);
-    std::fill(palettes, palettes + QPlatformTheme::NPalettes, static_cast<QPalette *>(0));
+    std::fill(palettes, palettes + QPlatformTheme::NPalettes, static_cast<QPalette *>(nullptr));
-    std::fill(fonts, fonts + QPlatformTheme::NFonts, static_cast<QFont *>(0));
+    std::fill(fonts, fonts + QPlatformTheme::NFonts, static_cast<QFont *>(nullptr));
 }
 
 const char *QGenericUnixTheme::name = "generic";
@@ -162,7 +162,7 @@ const QFont *QGenericUnixTheme::font(Font type) const
     case QPlatformTheme::FixedFont:
         return &d->fixedFont;
     default:
-        return 0;
+        return nullptr;
     }
 }
 
@@ -532,7 +532,7 @@ QFont *QKdeThemePrivate::kdeFont(const QVariant &fontValue)
                 return new QFont(font);
         }
     }
-    return 0;
+    return nullptr;
 }
 
 
@@ -621,7 +621,7 @@ QPlatformTheme *QKdeTheme::createKdeTheme()
     const QByteArray kdeVersionBA = qgetenv("KDE_SESSION_VERSION");
     const int kdeVersion = kdeVersionBA.toInt();
     if (kdeVersion < 4)
-        return 0;
+        return nullptr;
 
     if (kdeVersion > 4)
         // Plasma 5 follows XDG spec
@@ -665,7 +665,7 @@ QPlatformTheme *QKdeTheme::createKdeTheme()
     kdeDirs.removeDuplicates();
     if (kdeDirs.isEmpty()) {
         qWarning("Unable to determine KDE dirs");
-        return 0;
+        return nullptr;
     }
 
     return new QKdeTheme(kdeDirs, kdeVersion);
@@ -782,7 +782,7 @@ const QFont *QGnomeTheme::font(Font type) const
     case QPlatformTheme::FixedFont:
         return d->fixedFont;
     default:
-        return 0;
+        return nullptr;
     }
 }
 

src/gui/text/freetype/qfontengine_ft.cpp

@@ -220,7 +220,7 @@ QFreetypeFace *QFreetypeFace::getFace(const QFontEngine::FaceId &face_id,
 
     QtFreetypeData *freetypeData = qt_getFreetypeData();
 
-    QFreetypeFace *freetype = freetypeData->faces.value(face_id, 0);
+    QFreetypeFace *freetype = freetypeData->faces.value(face_id, nullptr);
     if (freetype) {
         freetype->ref.ref();
     } else {
@@ -1396,7 +1396,7 @@ void QFontEngineFT::TransformedGlyphSets::moveToFront(int i)
 QFontEngineFT::QGlyphSet *QFontEngineFT::loadGlyphSet(const QTransform &matrix)
 {
     if (matrix.type() > QTransform::TxShear || !cacheEnabled)
-        return 0;
+        return nullptr;
 
     // FT_Set_Transform only supports scalable fonts
     if (!FT_IS_SCALABLE(freetype->face))

src/gui/text/qfont.cpp

@@ -2667,7 +2667,7 @@ void QFontCache::cleanup()
         // no cache - just ignore
     }
     if (cache && cache->hasLocalData())
-        cache->setLocalData(0);
+        cache->setLocalData(nullptr);
 }
 
 static QBasicAtomicInt font_cache_id = Q_BASIC_ATOMIC_INITIALIZER(0);

src/gui/text/qfontengine.cpp

@@ -230,7 +230,7 @@ bool QFontEngine::supportsScript(QChar::Script script) const
     if (qt_useHarfbuzzNG()) {
         // in AAT fonts, 'gsub' table is effectively replaced by 'mort'/'morx' table
         uint len;
-        if (getSfntTableData(MAKE_TAG('m','o','r','t'), 0, &len) || getSfntTableData(MAKE_TAG('m','o','r','x'), 0, &len))
+        if (getSfntTableData(MAKE_TAG('m','o','r','t'), nullptr, &len) || getSfntTableData(MAKE_TAG('m','o','r','x'), nullptr, &len))
             return true;
 
         if (hb_face_t *face = hb_qt_face_get_for_engine(const_cast<QFontEngine *>(this))) {

src/gui/text/qfontengine_qpf2.cpp

@@ -90,7 +90,7 @@ static const QFontEngineQPF2::TagType tagTypes[QFontEngineQPF2::NumTags] = {
 #define READ_VERIFY(type, variable) \
     if (tagPtr + sizeof(type) > endPtr) { \
         DEBUG_VERIFY() << "read verify failed in line" << __LINE__; \
-        return 0; \
+        return nullptr; \
     } \
     variable = qFromBigEndian<type>(tagPtr); \
     DEBUG_VERIFY() << "read value" << variable << "of type " #type; \
@@ -113,7 +113,7 @@ T readValue(const uchar *&data)
 #define VERIFY_TAG(condition) \
     if (!(condition)) { \
         DEBUG_VERIFY() << "verifying tag condition " #condition " failed in line" << __LINE__ << "with tag" << tag; \
-        return 0; \
+        return nullptr; \
     }
 
 static inline const uchar *verifyTag(const uchar *tagPtr, const uchar *endPtr)

src/gui/text/qtextdocument_p.cpp

@@ -1601,7 +1601,7 @@ QTextObject *QTextDocumentPrivate::objectForIndex(int objectIndex) const
     if (objectIndex < 0)
         return nullptr;
 
-    QTextObject *object = objects.value(objectIndex, 0);
+    QTextObject *object = objects.value(objectIndex, nullptr);
     if (!object) {
         QTextDocumentPrivate *that = const_cast<QTextDocumentPrivate *>(this);
         QTextFormat fmt = formats.objectFormat(objectIndex);

src/gui/text/qtextdocumentlayout.cpp

@@ -2909,7 +2909,7 @@ void QTextDocumentLayoutPrivate::positionFloat(QTextFrame *frame, QTextLine *cur
 
     // If the frame is a table, then positioning it will affect the size if it covers more than
     // one page, because of page breaks and repeating the header.
-    if (qobject_cast<QTextTable *>(frame) != 0)
+    if (qobject_cast<QTextTable *>(frame) != nullptr)
         fd->sizeDirty = frameSpansIntoNextPage;
 }
 

src/gui/text/qtextodfwriter.cpp

@@ -312,7 +312,7 @@ void QTextOdfWriter::writeBlock(QXmlStreamWriter &writer, const QTextBlock &bloc
                             .arg(block.textList()->formatIndex()));
                 }
                 else {
-                    m_listStack.push(0);
+                    m_listStack.push(nullptr);
                 }
             }
         }

src/gui/util/qgridlayoutengine.cpp

@@ -1255,7 +1255,7 @@ void QGridLayoutEngine::maybeExpandGrid(int row, int column, Qt::Orientation ori
 
                     Q_ASSERT(newIndex > oldIndex);
                     q_grid[newIndex] = q_grid[oldIndex];
-                    q_grid[oldIndex] = 0;
+                    q_grid[oldIndex] = nullptr;
                 }
             }
         }
@@ -1264,7 +1264,7 @@ void QGridLayoutEngine::maybeExpandGrid(int row, int column, Qt::Orientation ori
 
 void QGridLayoutEngine::regenerateGrid()
 {
-    q_grid.fill(0);
+    q_grid.fill(nullptr);
 
     for (int i = q_items.count() - 1; i >= 0; --i) {
         QGridLayoutItem *item = q_items.at(i);

src/gui/vulkan/qbasicvulkanplatforminstance.cpp

@@ -66,7 +66,7 @@ QBasicPlatformVulkanInstance::QBasicPlatformVulkanInstance()
       m_vkGetInstanceProcAddr(nullptr),
       m_ownsVkInst(false),
       m_errorCode(VK_SUCCESS),
-      m_debugCallback(0)
+      m_debugCallback(VK_NULL_HANDLE)
 {
 }
 

src/network/access/qhttpnetworkconnection_p.h

@@ -101,9 +101,9 @@ public:
 
     explicit QHttpNetworkConnection(const QString &hostName, quint16 port = 80, bool encrypt = false,
                                     ConnectionType connectionType = ConnectionTypeHTTP,
-                                    QObject *parent = 0);
+                                    QObject *parent = nullptr);
     QHttpNetworkConnection(quint16 channelCount, const QString &hostName, quint16 port = 80,
-                           bool encrypt = false, QObject *parent = 0,
+                           bool encrypt = false, QObject *parent = nullptr,
                            ConnectionType connectionType = ConnectionTypeHTTP);
     ~QHttpNetworkConnection();
 

src/network/access/qhttpthreaddelegate.cpp

@@ -257,7 +257,7 @@ void QHttpThreadDelegate::startRequestSynchronously()
     synchronousRequestLoop.exec();
 
     connections.localData()->releaseEntry(cacheKey);
-    connections.setLocalData(0);
+    connections.setLocalData(nullptr);
 
 #ifdef QHTTPTHREADDELEGATE_DEBUG
     qDebug() << "QHttpThreadDelegate::startRequestSynchronously() thread=" << QThread::currentThreadId() << "finished";

src/network/ssl/qsslsocket_openssl_symbols_p.h

@@ -86,7 +86,7 @@ QT_BEGIN_NAMESPACE
 
 #  define DEFINEFUNC(ret, func, arg, a, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg); \
-    static _q_PTR_##func _q_##func = 0; \
+    static _q_PTR_##func _q_##func = nullptr; \
     ret q_##func(arg) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \
@@ -98,7 +98,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2)
 #  define DEFINEFUNC2(ret, func, arg1, a, arg2, b, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2);         \
-    static _q_PTR_##func _q_##func = 0;               \
+    static _q_PTR_##func _q_##func = nullptr;         \
     ret q_##func(arg1, arg2) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func);\
@@ -110,7 +110,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3)
 #  define DEFINEFUNC3(ret, func, arg1, a, arg2, b, arg3, c, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3);            \
-    static _q_PTR_##func _q_##func = 0;                        \
+    static _q_PTR_##func _q_##func = nullptr;                  \
     ret q_##func(arg1, arg2, arg3) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \
@@ -122,7 +122,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3, arg4)
 #  define DEFINEFUNC4(ret, func, arg1, a, arg2, b, arg3, c, arg4, d, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3, arg4);               \
-    static _q_PTR_##func _q_##func = 0;                                 \
+    static _q_PTR_##func _q_##func = nullptr;                           \
     ret q_##func(arg1, arg2, arg3, arg4) { \
          if (Q_UNLIKELY(!_q_##func)) { \
              qsslSocketUnresolvedSymbolWarning(#func); \
@@ -134,7 +134,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3, arg4, arg5)
 #  define DEFINEFUNC5(ret, func, arg1, a, arg2, b, arg3, c, arg4, d, arg5, e, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3, arg4, arg5);         \
-    static _q_PTR_##func _q_##func = 0;                                 \
+    static _q_PTR_##func _q_##func = nullptr;                           \
     ret q_##func(arg1, arg2, arg3, arg4, arg5) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \
@@ -146,7 +146,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3, arg4, arg6)
 #  define DEFINEFUNC6(ret, func, arg1, a, arg2, b, arg3, c, arg4, d, arg5, e, arg6, f, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3, arg4, arg5, arg6);   \
-    static _q_PTR_##func _q_##func = 0;                                 \
+    static _q_PTR_##func _q_##func = nullptr;                           \
     ret q_##func(arg1, arg2, arg3, arg4, arg5, arg6) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \
@@ -158,7 +158,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3, arg4, arg6, arg7)
 #  define DEFINEFUNC7(ret, func, arg1, a, arg2, b, arg3, c, arg4, d, arg5, e, arg6, f, arg7, g, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3, arg4, arg5, arg6, arg7);   \
-    static _q_PTR_##func _q_##func = 0;                                       \
+    static _q_PTR_##func _q_##func = nullptr;                                 \
     ret q_##func(arg1, arg2, arg3, arg4, arg5, arg6, arg7) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \
@@ -170,7 +170,7 @@ QT_BEGIN_NAMESPACE
 // ret func(arg1, arg2, arg3, arg4, arg6, arg7, arg8, arg9)
 #  define DEFINEFUNC9(ret, func, arg1, a, arg2, b, arg3, c, arg4, d, arg5, e, arg6, f, arg7, g, arg8, h, arg9, i, err, funcret) \
     typedef ret (*_q_PTR_##func)(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9);   \
-    static _q_PTR_##func _q_##func = 0;                                                   \
+    static _q_PTR_##func _q_##func = nullptr;                                             \
     ret q_##func(arg1, arg2, arg3, arg4, arg5, arg6, arg7, arg8, arg9) { \
         if (Q_UNLIKELY(!_q_##func)) { \
             qsslSocketUnresolvedSymbolWarning(#func); \

src/sql/kernel/qsqlquery.cpp

@@ -64,7 +64,7 @@ public:
     static QSqlQueryPrivate* shared_null();
 };
 
-Q_GLOBAL_STATIC_WITH_ARGS(QSqlQueryPrivate, nullQueryPrivate, (0))
+Q_GLOBAL_STATIC_WITH_ARGS(QSqlQueryPrivate, nullQueryPrivate, (nullptr))
 Q_GLOBAL_STATIC(QSqlNullDriver, nullDriver)
 Q_GLOBAL_STATIC_WITH_ARGS(QSqlNullResult, nullResult, (nullDriver()))
 

src/tools/moc/main.cpp

@@ -242,7 +242,7 @@ int runMoc(int argc, char **argv)
     QString filename;
     QString output;
     QFile in;
-    FILE *out = 0;
+    FILE *out = nullptr;
 
     // Note that moc isn't translated.
     // If you use this code as an example for a translated app, make sure to translate the strings.

src/tools/qdbuscpp2xml/qdbuscpp2xml.cpp

@@ -196,7 +196,7 @@ static QString generateInterfaceXml(const ClassDef *mo)
     // start with properties:
     if (flags & (QDBusConnection::ExportScriptableProperties |
                  QDBusConnection::ExportNonScriptableProperties)) {
-        static const char *accessvalues[] = {0, "read", "write", "readwrite"};
+        static const char *accessvalues[] = {nullptr, "read", "write", "readwrite"};
         for (const PropertyDef &mp : mo->propertyList) {
             if (!((!mp.scriptable.isEmpty() && (flags & QDBusConnection::ExportScriptableProperties)) ||
                   (!mp.scriptable.isEmpty() && (flags & QDBusConnection::ExportNonScriptableProperties))))

src/tools/qlalr/compress.cpp

@@ -74,10 +74,10 @@ public:
 public:
   inline UncompressedRow ():
     _M_index (0),
-    _M_begin (0),
+    _M_begin (nullptr),
-    _M_end (0),
+    _M_end (nullptr),
-    _M_beginNonZeros (0),
+    _M_beginNonZeros (nullptr),
-    _M_endNonZeros (0) {}
+    _M_endNonZeros (nullptr) {}
 
   inline UncompressedRow (int index, const_iterator begin, const_iterator end)
   { assign (index, begin, end); }

src/tools/qlalr/cppgenerator.cpp

@@ -325,10 +325,10 @@ void CppGenerator::operator () ()
   compressed_goto (pgoto, state_count, non_terminal_count);
 
   delete[] table;
-  table = 0;
+  table = nullptr;
 
   delete[] pgoto;
-  pgoto = 0;
+  pgoto = nullptr;
 
 #undef ACTION
 #undef GOTO

src/tools/qlalr/grammar.cpp

@@ -33,8 +33,8 @@ QT_BEGIN_NAMESPACE
 
 const char *const grammar::spell [] = {
     "end of file", "identifier", "string literal", "%decl", "%expect", "%expect-lr", "%impl", "%left", "%merged_output", "%nonassoc",
-    "%parser", "%prec", "%right", "%start", "%token", "%token_prefix", ":", "|", ";", 0,
+    "%parser", "%prec", "%right", "%start", "%token", "%token_prefix", ":", "|", ";", nullptr,
-    0, 0
+    nullptr, nullptr
 };
 
 const short grammar::lhs [] = {

src/tools/qlalr/recognizer.cpp

@@ -37,7 +37,7 @@
 Recognizer::Recognizer (Grammar *grammar, bool no_lines):
   tos(0),
   stack_size(0),
-  state_stack(0),
+  state_stack(nullptr),
   _M_line(1),
   _M_action_line(0),
   _M_grammar(grammar),

src/tools/rcc/rcc.cpp

@@ -150,7 +150,7 @@ RCCFileInfo::RCCFileInfo(const QString &name, const QFileInfo &fileInfo,
     m_language = language;
     m_country = country;
     m_flags = flags;
-    m_parent = 0;
+    m_parent = nullptr;
     m_nameOffset = 0;
     m_dataOffset = 0;
     m_childOffset = 0;
@@ -461,7 +461,7 @@ RCCResourceLibrary::Strings::Strings() :
 }
 
 RCCResourceLibrary::RCCResourceLibrary(quint8 formatVersion)
-  : m_root(0),
+  : m_root(nullptr),
     m_format(C_Code),
     m_verbose(false),
     m_compressionAlgo(CONSTANT_COMPRESSALGO_DEFAULT),
@@ -472,8 +472,8 @@ RCCResourceLibrary::RCCResourceLibrary(quint8 formatVersion)
     m_dataOffset(0),
     m_overallFlags(0),
     m_useNameSpace(CONSTANT_USENAMESPACE),
-    m_errorDevice(0),
+    m_errorDevice(nullptr),
-    m_outDevice(0),
+    m_outDevice(nullptr),
     m_formatVersion(formatVersion),
     m_noZstd(false)
 {
@@ -707,7 +707,7 @@ bool RCCResourceLibrary::interpretResourceFile(QIODevice *inputDevice,
         return false;
     }
 
-    if (m_root == 0) {
+    if (m_root == nullptr) {
         const QString msg = QString::fromLatin1("RCC: Warning: No resources in '%1'.\n").arg(fname);
         m_errorDevice->write(msg.toUtf8());
         if (!listMode && m_format == Binary) {
@@ -770,9 +770,9 @@ void RCCResourceLibrary::reset()
 {
      if (m_root) {
         delete m_root;
-        m_root = 0;
+        m_root = nullptr;
     }
-    m_errorDevice = 0;
+    m_errorDevice = nullptr;
     m_failedResources.clear();
 }
 

src/tools/uic/cpp/cppwriteinitialization.cpp

@@ -649,7 +649,7 @@ void WriteInitialization::acceptWidget(DomWidget *node)
     }
 
     if (node->elementLayout().isEmpty())
-        m_layoutChain.push(0);
+        m_layoutChain.push(nullptr);
 
     m_layoutWidget = false;
     if (className == QLatin1String("QWidget") && !node->hasAttributeNative()) {
@@ -662,7 +662,7 @@ void WriteInitialization::acceptWidget(DomWidget *node)
         }
     }
     m_widgetChain.push(node);
-    m_layoutChain.push(0);
+    m_layoutChain.push(nullptr);
     TreeWalker::acceptWidget(node);
     m_layoutChain.pop();
     m_widgetChain.pop();