Merge remote-tracking branch 'origin/5.14' into 5.15

Change-Id: I9953c1ca16862184c2373027e946c482ce8e6f0e
author: Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org> 2019-10-13 01:00:43 +0200
committer: Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org> 2019-10-13 01:00:43 +0200
commit: 8d8140dffa9aa680a519b501fc5bdf08c91dd735 (patch)
tree: 346d255ca98fd79aaef9db84eac724a49285da1c
parent: e55a79b022e542a482177c2f34140c23b100b708 (diff)
parent: a90899df4330afccd8299fa81754f369e6d12344 (diff)
100 files changed, 481 insertions, 340 deletions
diff --git a/examples/widgets/dialogs/classwizard/classwizard.cpp b/examples/widgets/dialogs/classwizard/classwizard.cpp
index 81adf85b0d..8421289eab 100644
--- a/examples/widgets/dialogs/classwizard/classwizard.cpp
+++ b/examples/widgets/dialogs/classwizard/classwizard.cpp
@@ -118,9 +118,9 @@ void ClassWizard::accept()
     block += "public:\n";
 
     if (field("qobjectCtor").toBool()) {
-        block += "    " + className + "(QObject *parent = 0);\n";
+        block += "    " + className + "(QObject *parent = nullptr);\n";
     } else if (field("qwidgetCtor").toBool()) {
-        block += "    " + className + "(QWidget *parent = 0);\n";
+        block += "    " + className + "(QWidget *parent = nullptr);\n";
     } else if (field("defaultCtor").toBool()) {
         block += "    " + className + "();\n";
         if (field("copyCtor").toBool()) {
diff --git a/examples/widgets/dialogs/classwizard/classwizard.h b/examples/widgets/dialogs/classwizard/classwizard.h
index fee0f6df66..0c386f0553 100644
--- a/examples/widgets/dialogs/classwizard/classwizard.h
+++ b/examples/widgets/dialogs/classwizard/classwizard.h
@@ -67,7 +67,7 @@ class ClassWizard : public QWizard
     Q_OBJECT
 
 public:
-    ClassWizard(QWidget *parent = 0);
+    ClassWizard(QWidget *parent = nullptr);
 
     void accept() override;
 };
@@ -79,7 +79,7 @@ class IntroPage : public QWizardPage
     Q_OBJECT
 
 public:
-    IntroPage(QWidget *parent = 0);
+    IntroPage(QWidget *parent = nullptr);
 
 private:
     QLabel *label;
@@ -92,7 +92,7 @@ class ClassInfoPage : public QWizardPage
     Q_OBJECT
 
 public:
-    ClassInfoPage(QWidget *parent = 0);
+    ClassInfoPage(QWidget *parent = nullptr);
 
 private:
     QLabel *classNameLabel;
@@ -114,7 +114,7 @@ class CodeStylePage : public QWizardPage
     Q_OBJECT
 
 public:
-    CodeStylePage(QWidget *parent = 0);
+    CodeStylePage(QWidget *parent = nullptr);
 
 protected:
     void initializePage() override;
@@ -135,7 +135,7 @@ class OutputFilesPage : public QWizardPage
     Q_OBJECT
 
 public:
-    OutputFilesPage(QWidget *parent = 0);
+    OutputFilesPage(QWidget *parent = nullptr);
 
 protected:
     void initializePage() override;
@@ -154,7 +154,7 @@ class ConclusionPage : public QWizardPage
     Q_OBJECT
 
 public:
-    ConclusionPage(QWidget *parent = 0);
+    ConclusionPage(QWidget *parent = nullptr);
 
 protected:
     void initializePage() override;
diff --git a/examples/widgets/dialogs/extension/finddialog.h b/examples/widgets/dialogs/extension/finddialog.h
index 858e1c929b..9b4b5b5f3d 100644
--- a/examples/widgets/dialogs/extension/finddialog.h
+++ b/examples/widgets/dialogs/extension/finddialog.h
@@ -68,7 +68,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
 
 private:
     QLabel *label;
diff --git a/examples/widgets/dialogs/findfiles/window.h b/examples/widgets/dialogs/findfiles/window.h
index 949df704bb..b74ba5e70c 100644
--- a/examples/widgets/dialogs/findfiles/window.h
+++ b/examples/widgets/dialogs/findfiles/window.h
@@ -68,7 +68,7 @@ class Window : public QWidget
     Q_OBJECT
 
 public:
-    Window(QWidget *parent = 0);
+    Window(QWidget *parent = nullptr);
 
 private slots:
     void browse();
diff --git a/examples/widgets/dialogs/licensewizard/licensewizard.h b/examples/widgets/dialogs/licensewizard/licensewizard.h
index c7709d88b3..e2890e484f 100644
--- a/examples/widgets/dialogs/licensewizard/licensewizard.h
+++ b/examples/widgets/dialogs/licensewizard/licensewizard.h
@@ -72,7 +72,7 @@ public:
            Page_Conclusion };
 //! [2]
 
-    LicenseWizard(QWidget *parent = 0);
+    LicenseWizard(QWidget *parent = nullptr);
 
 private slots:
     void showHelp();
@@ -86,7 +86,7 @@ class IntroPage : public QWizardPage
     Q_OBJECT
 
 public:
-    IntroPage(QWidget *parent = 0);
+    IntroPage(QWidget *parent = nullptr);
 
     int nextId() const override;
 
@@ -103,7 +103,7 @@ class EvaluatePage : public QWizardPage
     Q_OBJECT
 
 public:
-    EvaluatePage(QWidget *parent = 0);
+    EvaluatePage(QWidget *parent = nullptr);
 
     int nextId() const override;
 
@@ -120,7 +120,7 @@ class RegisterPage : public QWizardPage
     Q_OBJECT
 
 public:
-    RegisterPage(QWidget *parent = 0);
+    RegisterPage(QWidget *parent = nullptr);
 
     int nextId() const override;
 
@@ -136,7 +136,7 @@ class DetailsPage : public QWizardPage
     Q_OBJECT
 
 public:
-    DetailsPage(QWidget *parent = 0);
+    DetailsPage(QWidget *parent = nullptr);
 
     int nextId() const override;
 
@@ -155,7 +155,7 @@ class ConclusionPage : public QWizardPage
     Q_OBJECT
 
 public:
-    ConclusionPage(QWidget *parent = 0);
+    ConclusionPage(QWidget *parent = nullptr);
 
     void initializePage() override;
     int nextId() const override;
diff --git a/examples/widgets/dialogs/standarddialogs/dialog.h b/examples/widgets/dialogs/standarddialogs/dialog.h
index 0d1c8d3e54..6d9cbdc07a 100644
--- a/examples/widgets/dialogs/standarddialogs/dialog.h
+++ b/examples/widgets/dialogs/standarddialogs/dialog.h
@@ -66,7 +66,7 @@ class Dialog : public QWidget
     Q_OBJECT
 
 public:
-    Dialog(QWidget *parent = 0);
+    Dialog(QWidget *parent = nullptr);
 
 private slots:
     void setInteger();
diff --git a/examples/widgets/dialogs/tabdialog/tabdialog.h b/examples/widgets/dialogs/tabdialog/tabdialog.h
index 2db47c9ddd..b7c6c5b8da 100644
--- a/examples/widgets/dialogs/tabdialog/tabdialog.h
+++ b/examples/widgets/dialogs/tabdialog/tabdialog.h
@@ -65,7 +65,7 @@ class GeneralTab : public QWidget
     Q_OBJECT
 
 public:
-    explicit GeneralTab(const QFileInfo &fileInfo, QWidget *parent = 0);
+    explicit GeneralTab(const QFileInfo &fileInfo, QWidget *parent = nullptr);
 };
 //! [0]
 
@@ -76,7 +76,7 @@ class PermissionsTab : public QWidget
     Q_OBJECT
 
 public:
-    explicit PermissionsTab(const QFileInfo &fileInfo, QWidget *parent = 0);
+    explicit PermissionsTab(const QFileInfo &fileInfo, QWidget *parent = nullptr);
 };
 //! [1]
 
@@ -87,7 +87,7 @@ class ApplicationsTab : public QWidget
     Q_OBJECT
 
 public:
-    explicit ApplicationsTab(const QFileInfo &fileInfo, QWidget *parent = 0);
+    explicit ApplicationsTab(const QFileInfo &fileInfo, QWidget *parent = nullptr);
 };
 //! [2]
 
@@ -98,7 +98,7 @@ class TabDialog : public QDialog
     Q_OBJECT
 
 public:
-    explicit TabDialog(const QString &fileName, QWidget *parent = 0);
+    explicit TabDialog(const QString &fileName, QWidget *parent = nullptr);
 
 private:
     QTabWidget *tabWidget;
diff --git a/examples/widgets/effects/blurpicker/blurpicker.h b/examples/widgets/effects/blurpicker/blurpicker.h
index 3f444419a8..dc7fc4dabb 100644
--- a/examples/widgets/effects/blurpicker/blurpicker.h
+++ b/examples/widgets/effects/blurpicker/blurpicker.h
@@ -63,7 +63,7 @@ class BlurPicker: public QGraphicsView
     Q_PROPERTY(qreal index READ index WRITE setIndex)
 
 public:
-    BlurPicker(QWidget *parent = 0);
+    BlurPicker(QWidget *parent = nullptr);
 
     qreal index() const;
     void setIndex(qreal);
diff --git a/examples/widgets/effects/fademessage/fademessage.h b/examples/widgets/effects/fademessage/fademessage.h
index d17a1616ce..4d84c4ed21 100644
--- a/examples/widgets/effects/fademessage/fademessage.h
+++ b/examples/widgets/effects/fademessage/fademessage.h
@@ -62,7 +62,7 @@ class FadeMessage: public QGraphicsView
     Q_OBJECT
 
 public:
-    FadeMessage(QWidget *parent = 0);
+    FadeMessage(QWidget *parent = nullptr);
 
 private:
     void setupScene();
diff --git a/examples/widgets/gestures/imagegestures/imagewidget.cpp b/examples/widgets/gestures/imagegestures/imagewidget.cpp
index 0a6b963559..fb5351f949 100644
--- a/examples/widgets/gestures/imagegestures/imagewidget.cpp
+++ b/examples/widgets/gestures/imagegestures/imagewidget.cpp
@@ -50,26 +50,23 @@
 
 #include "imagewidget.h"
 
-#include <QtWidgets>
+#include <QDir>
+#include <QImageReader>
+#include <QGestureEvent>
+#include <QPainter>
 
 Q_LOGGING_CATEGORY(lcExample, "qt.examples.imagegestures")
 
 //! [constructor]
 ImageWidget::ImageWidget(QWidget *parent)
-    : QWidget(parent),
-    position(0),
-    horizontalOffset(0),
-    verticalOffset(0),
-    rotationAngle(0),
-    scaleFactor(1),
-    currentStepScaleFactor(1)
-
+    : QWidget(parent), position(0), horizontalOffset(0), verticalOffset(0)
+    , rotationAngle(0), scaleFactor(1), currentStepScaleFactor(1)
 {
-    setMinimumSize(QSize(100,100));
+    setMinimumSize(QSize(100, 100));
 }
 //! [constructor]
 
-void ImageWidget::grabGestures(const QList<Qt::GestureType> &gestures)
+void ImageWidget::grabGestures(const QVector<Qt::GestureType> &gestures)
 {
     //! [enable gestures]
     for (Qt::GestureType gesture : gestures)
@@ -96,11 +93,11 @@ void ImageWidget::paintEvent(QPaintEvent*)
     const qreal wh = height();
     const qreal ww = width();
 
-    p.translate(ww/2, wh/2);
+    p.translate(ww / 2, wh / 2);
     p.translate(horizontalOffset, verticalOffset);
     p.rotate(rotationAngle);
     p.scale(currentStepScaleFactor * scaleFactor, currentStepScaleFactor * scaleFactor);
-    p.translate(-iw/2, -ih/2);
+    p.translate(-iw / 2, -ih / 2);
     p.drawImage(0, 0, currentImage);
 }
 //! [paint method]
@@ -198,8 +195,7 @@ void ImageWidget::openDirectory(const QString &path)
 {
     this->path = path;
     QDir dir(path);
-    QStringList nameFilters;
-    nameFilters << "*.jpg" << "*.png";
+    const QStringList nameFilters{"*.jpg", "*.png"};
     files = dir.entryList(nameFilters, QDir::Files|QDir::Readable, QDir::Name);
 
     position = 0;
@@ -207,7 +203,7 @@ void ImageWidget::openDirectory(const QString &path)
     update();
 }
 
-QImage ImageWidget::loadImage(const QString &fileName)
+QImage ImageWidget::loadImage(const QString &fileName) const
 {
     QImageReader reader(fileName);
     reader.setAutoTransform(true);
diff --git a/examples/widgets/gestures/imagegestures/imagewidget.h b/examples/widgets/gestures/imagegestures/imagewidget.h
index 5e92541067..ae5eb7bc2b 100644
--- a/examples/widgets/gestures/imagegestures/imagewidget.h
+++ b/examples/widgets/gestures/imagegestures/imagewidget.h
@@ -51,9 +51,9 @@
 #ifndef IMAGEWIDGET_H
 #define IMAGEWIDGET_H
 
-#include <QWidget>
 #include <QImage>
-#include <QtWidgets>
+#include <QLoggingCategory>
+#include <QWidget>
 
 QT_BEGIN_NAMESPACE
 class QGestureEvent;
@@ -70,9 +70,9 @@ class ImageWidget : public QWidget
     Q_OBJECT
 
 public:
-    ImageWidget(QWidget *parent = 0);
+    ImageWidget(QWidget *parent = nullptr);
     void openDirectory(const QString &path);
-    void grabGestures(const QList<Qt::GestureType> &gestures);
+    void grabGestures(const QVector<Qt::GestureType> &gestures);
 
 protected:
     bool event(QEvent *event) override;
@@ -87,7 +87,7 @@ private:
     void swipeTriggered(QSwipeGesture*);
 //! [class definition begin]
 
-    QImage loadImage(const QString &fileName);
+    QImage loadImage(const QString &fileName) const;
     void loadImage();
     void goNextImage();
     void goPrevImage();
diff --git a/examples/widgets/gestures/imagegestures/main.cpp b/examples/widgets/gestures/imagegestures/main.cpp
index ecd7462bd3..4f8d4ec15e 100644
--- a/examples/widgets/gestures/imagegestures/main.cpp
+++ b/examples/widgets/gestures/imagegestures/main.cpp
@@ -102,7 +102,7 @@ int main(int argc, char *argv[])
         return -1;
     }
 
-    QList<Qt::GestureType> gestures;
+    QVector<Qt::GestureType> gestures;
     if (!commandLineParser.isSet(disablePanOption))
         gestures << Qt::PanGesture;
     if (!commandLineParser.isSet(disablePinchOption))
diff --git a/examples/widgets/gestures/imagegestures/mainwidget.cpp b/examples/widgets/gestures/imagegestures/mainwidget.cpp
index c4e63e9e7d..d1c786a93a 100644
--- a/examples/widgets/gestures/imagegestures/mainwidget.cpp
+++ b/examples/widgets/gestures/imagegestures/mainwidget.cpp
@@ -72,7 +72,7 @@ void MainWidget::openDirectory(const QString &path)
     imageWidget->openDirectory(path);
 }
 
-void MainWidget::grabGestures(const QList<Qt::GestureType> &gestures)
+void MainWidget::grabGestures(const QVector<Qt::GestureType> &gestures)
 {
     imageWidget->grabGestures(gestures);
 }
diff --git a/examples/widgets/gestures/imagegestures/mainwidget.h b/examples/widgets/gestures/imagegestures/mainwidget.h
index f3763ffffc..1600597251 100644
--- a/examples/widgets/gestures/imagegestures/mainwidget.h
+++ b/examples/widgets/gestures/imagegestures/mainwidget.h
@@ -60,8 +60,8 @@ class MainWidget : public QMainWindow
     Q_OBJECT
 
 public:
-    MainWidget(QWidget *parent = 0);
-    void grabGestures(const QList<Qt::GestureType> &gestures);
+    MainWidget(QWidget *parent = nullptr);
+    void grabGestures(const QVector<Qt::GestureType> &gestures);
 
 public slots:
     void openDirectory(const QString &path);
diff --git a/examples/widgets/graphicsview/collidingmice/mouse.cpp b/examples/widgets/graphicsview/collidingmice/mouse.cpp
index 556e58d19b..8375092c39 100644
--- a/examples/widgets/graphicsview/collidingmice/mouse.cpp
+++ b/examples/widgets/graphicsview/collidingmice/mouse.cpp
@@ -69,8 +69,9 @@ static qreal normalizeAngle(qreal angle)
 }
 
 //! [0]
-Mouse::Mouse()
-    : color(QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256))
+Mouse::Mouse() : color(QRandomGenerator::global()->bounded(256),
+                       QRandomGenerator::global()->bounded(256),
+                       QRandomGenerator::global()->bounded(256))
 {
     setRotation(QRandomGenerator::global()->bounded(360 * 16));
 }
diff --git a/examples/widgets/itemviews/frozencolumn/main.cpp b/examples/widgets/itemviews/frozencolumn/main.cpp
index 6f2b4a8d71..2965617ba1 100644
--- a/examples/widgets/itemviews/frozencolumn/main.cpp
+++ b/examples/widgets/itemviews/frozencolumn/main.cpp
@@ -71,7 +71,7 @@ int main(int argc, char* argv[])
         model->setHorizontalHeaderLabels(list);
 
         int row = 0;
-        QStandardItem *newItem = 0;
+        QStandardItem *newItem = nullptr;
         while (!stream.atEnd()) {
             line = stream.readLine();
             if (!line.startsWith('#') && line.contains(',')) {
diff --git a/examples/widgets/itemviews/interview/model.cpp b/examples/widgets/itemviews/interview/model.cpp
index feaf8bb98c..519164999d 100644
--- a/examples/widgets/itemviews/interview/model.cpp
+++ b/examples/widgets/itemviews/interview/model.cpp
@@ -132,7 +132,7 @@ bool Model::hasChildren(const QModelIndex &parent) const
 Qt::ItemFlags Model::flags(const QModelIndex &index) const
 {
     if (!index.isValid())
-        return 0;
+        return {};
     return Qt::ItemIsDragEnabled|QAbstractItemModel::flags(index);
 }
 
@@ -146,7 +146,7 @@ Model::Node *Model::node(int row, Node *parent) const
 
 Model::Node *Model::parent(Node *child) const
 {
-    return child ? child->parent : 0;
+    return child ? child->parent : nullptr;
 }
 
 int Model::row(Node *node) const
diff --git a/examples/widgets/itemviews/stardelegate/main.cpp b/examples/widgets/itemviews/stardelegate/main.cpp
index 452976bba0..5ca85a6151 100644
--- a/examples/widgets/itemviews/stardelegate/main.cpp
+++ b/examples/widgets/itemviews/stardelegate/main.cpp
@@ -48,7 +48,8 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
+#include <QApplication>
+#include <QTableWidget>
 
 #include "stardelegate.h"
 #include "stareditor.h"
@@ -57,7 +58,7 @@
 //! [0]
 void populateTableWidget(QTableWidget *tableWidget)
 {
-    static const struct {
+    static constexpr struct {
         const char *title;
         const char *genre;
         const char *artist;
@@ -70,12 +71,12 @@ void populateTableWidget(QTableWidget *tableWidget)
         { "Sex Bomb", "Pop", "Tom Jones", 3 },
         { "Barbie Girl", "Pop", "Aqua", 5 },
 //! [2]
-        { 0, 0, 0, 0 }
+        { nullptr, nullptr, nullptr, 0 }
 //! [2] //! [3]
     };
 //! [3] //! [4]
 
-    for (int row = 0; staticData[row].title != 0; ++row) {
+    for (int row = 0; staticData[row].title != nullptr; ++row) {
         QTableWidgetItem *item0 = new QTableWidgetItem(staticData[row].title);
         QTableWidgetItem *item1 = new QTableWidgetItem(staticData[row].genre);
         QTableWidgetItem *item2 = new QTableWidgetItem(staticData[row].artist);
diff --git a/examples/widgets/painting/deform/pathdeform.cpp b/examples/widgets/painting/deform/pathdeform.cpp
index 64e81f8cab..d5c8746247 100644
--- a/examples/widgets/painting/deform/pathdeform.cpp
+++ b/examples/widgets/painting/deform/pathdeform.cpp
@@ -262,7 +262,7 @@ PathDeformWidget::PathDeformWidget(QWidget *parent, bool smallScreen)
     QHBoxLayout *mainLayout = new QHBoxLayout(this);
     mainLayout->addWidget(m_renderer);
 
-    m_controls = new PathDeformControls(0, m_renderer, smallScreen);
+    m_controls = new PathDeformControls(nullptr, m_renderer, smallScreen);
     m_controls->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Minimum);
 
     if (!smallScreen)
diff --git a/examples/widgets/painting/fontsampler/mainwindow.h b/examples/widgets/painting/fontsampler/mainwindow.h
index ffb2839ffa..34e54440d4 100644
--- a/examples/widgets/painting/fontsampler/mainwindow.h
+++ b/examples/widgets/painting/fontsampler/mainwindow.h
@@ -70,7 +70,7 @@ class MainWindow : public QMainWindow, private Ui::MainWindowBase
     Q_OBJECT
 
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 
 public slots:
     void on_clearAction_triggered();
diff --git a/examples/widgets/painting/gradients/gradients.cpp b/examples/widgets/painting/gradients/gradients.cpp
index a4528ce06f..d62ae93a15 100644
--- a/examples/widgets/painting/gradients/gradients.cpp
+++ b/examples/widgets/painting/gradients/gradients.cpp
@@ -102,9 +102,9 @@ uint ShadeWidget::colorAt(int x)
     generateShade();
 
     QPolygonF pts = m_hoverPoints->points();
-    for (int i=1; i < pts.size(); ++i) {
-        if (pts.at(i-1).x() <= x && pts.at(i).x() >= x) {
-            QLineF l(pts.at(i-1), pts.at(i));
+    for (int i = 1; i < pts.size(); ++i) {
+        if (pts.at(i - 1).x() <= x && pts.at(i).x() >= x) {
+            QLineF l(pts.at(i - 1), pts.at(i));
             l.setLength(l.length() * ((x - l.x1()) / l.dx()));
             return m_shade.pixel(qRound(qMin(l.x2(), (qreal(m_shade.width() - 1)))),
                                  qRound(qMin(l.y2(), qreal(m_shade.height() - 1))));
@@ -118,9 +118,9 @@ void ShadeWidget::setGradientStops(const QGradientStops &stops)
     if (m_shade_type == ARGBShade) {
         m_alpha_gradient = QLinearGradient(0, 0, width(), 0);
 
-        for (int i=0; i<stops.size(); ++i) {
-            QColor c = stops.at(i).second;
-            m_alpha_gradient.setColorAt(stops.at(i).first, QColor(c.red(), c.green(), c.blue()));
+        for (const auto &stop : stops) {
+            QColor c = stop.second;
+            m_alpha_gradient.setColorAt(stop.first, QColor(c.red(), c.green(), c.blue()));
         }
 
         m_shade = QImage();
@@ -223,13 +223,13 @@ void GradientEditor::pointsUpdated()
     std::sort(points.begin(), points.end(), x_less_than);
 
     for (int i = 0; i < points.size(); ++i) {
-        qreal x = int(points.at(i).x());
-        if (i + 1 < points.size() && x == points.at(i + 1).x())
+        const int x = int(points.at(i).x());
+        if (i + 1 < points.size() && x == int(points.at(i + 1).x()))
             continue;
-        QColor color((0x00ff0000 & m_red_shade->colorAt(int(x))) >> 16,
-                     (0x0000ff00 & m_green_shade->colorAt(int(x))) >> 8,
-                     (0x000000ff & m_blue_shade->colorAt(int(x))),
-                     (0xff000000 & m_alpha_shade->colorAt(int(x))) >> 24);
+        QColor color((0x00ff0000 & m_red_shade->colorAt(x)) >> 16,
+                     (0x0000ff00 & m_green_shade->colorAt(x)) >> 8,
+                     (0x000000ff & m_blue_shade->colorAt(x)),
+                     (0xff000000 & m_alpha_shade->colorAt(x)) >> 24);
 
         if (x / w > 1)
             return;
@@ -568,8 +568,8 @@ void GradientRenderer::paint(QPainter *p)
         g = QConicalGradient(pts.at(0), angle);
     }
 
-    for (int i = 0; i < m_stops.size(); ++i)
-        g.setColorAt(m_stops.at(i).first, m_stops.at(i).second);
+    for (const auto &stop : qAsConst(m_stops))
+        g.setColorAt(stop.first, stop.second);
 
     g.setSpread(m_spread);
 
diff --git a/examples/widgets/painting/gradients/gradients.h b/examples/widgets/painting/gradients/gradients.h
index c6525d18f8..45ef5d0f93 100644
--- a/examples/widgets/painting/gradients/gradients.h
+++ b/examples/widgets/painting/gradients/gradients.h
@@ -157,7 +157,7 @@ class GradientWidget : public QWidget
     Q_OBJECT
 
 public:
-    GradientWidget(QWidget *parent);
+    GradientWidget(QWidget *parent = nullptr);
 
 public slots:
     void setDefault1() { setDefault(1); }
diff --git a/examples/widgets/painting/gradients/main.cpp b/examples/widgets/painting/gradients/main.cpp
index 539d67e40e..0ddf7a4579 100644
--- a/examples/widgets/painting/gradients/main.cpp
+++ b/examples/widgets/painting/gradients/main.cpp
@@ -58,8 +58,8 @@ int main(int argc, char *argv[])
 
     QApplication app(argc, argv);
 
-    GradientWidget gradientWidget(0);
-    QStyle *arthurStyle = new ArthurStyle();
+    GradientWidget gradientWidget;
+    QStyle *arthurStyle = new ArthurStyle;
     gradientWidget.setStyle(arthurStyle);
     const QList<QWidget *> widgets = gradientWidget.findChildren<QWidget *>();
     for (QWidget *w : widgets) {
diff --git a/examples/widgets/painting/painterpaths/renderarea.h b/examples/widgets/painting/painterpaths/renderarea.h
index 5f0874b772..4b3ea5a397 100644
--- a/examples/widgets/painting/painterpaths/renderarea.h
+++ b/examples/widgets/painting/painterpaths/renderarea.h
@@ -60,7 +60,7 @@ class RenderArea : public QWidget
     Q_OBJECT
 
 public:
-    explicit RenderArea(const QPainterPath &path, QWidget *parent = 0);
+    explicit RenderArea(const QPainterPath &path, QWidget *parent = nullptr);
 
     QSize minimumSizeHint() const override;
     QSize sizeHint() const override;
diff --git a/examples/widgets/painting/pathstroke/pathstroke.cpp b/examples/widgets/painting/pathstroke/pathstroke.cpp
index e4009f0b1a..a850ce2672 100644
--- a/examples/widgets/painting/pathstroke/pathstroke.cpp
+++ b/examples/widgets/painting/pathstroke/pathstroke.cpp
@@ -48,11 +48,9 @@
 **
 ****************************************************************************/
 
+#include "pathstroke.h"
 #include "arthurstyle.h"
 #include "arthurwidgets.h"
-#include "pathstroke.h"
-
-#include <stdio.h>
 
 extern void draw_round_rect(QPainter *p, const QRect &bounds, int radius);
 
@@ -164,24 +162,39 @@ void PathStrokeControls::createCommonControls(QWidget* parent)
 
 
     // Connections
-    connect(flatCap, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setFlatCap);
-    connect(squareCap, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setSquareCap);
-    connect(roundCap, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setRoundCap);
-
-    connect(bevelJoin, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setBevelJoin);
-    connect(miterJoin, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setMiterJoin);
-    connect(svgMiterJoin, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setSvgMiterJoin);
-    connect(roundJoin, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setRoundJoin);
-
-    connect(curveMode, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setCurveMode);
-    connect(lineMode, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setLineMode);
-
-    connect(solidLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setSolidLine);
-    connect(dashLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setDashLine);
-    connect(dotLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setDotLine);
-    connect(dashDotLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setDashDotLine);
-    connect(dashDotDotLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setDashDotDotLine);
-    connect(customDashLine, &QAbstractButton::clicked, m_renderer, &PathStrokeRenderer::setCustomDashLine);
+    connect(flatCap, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setFlatCap);
+    connect(squareCap, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setSquareCap);
+    connect(roundCap, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setRoundCap);
+
+    connect(bevelJoin, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setBevelJoin);
+    connect(miterJoin, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setMiterJoin);
+    connect(svgMiterJoin, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setSvgMiterJoin);
+    connect(roundJoin, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setRoundJoin);
+
+    connect(curveMode, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setCurveMode);
+    connect(lineMode, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setLineMode);
+
+    connect(solidLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setSolidLine);
+    connect(dashLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setDashLine);
+    connect(dotLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setDotLine);
+    connect(dashDotLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setDashDotLine);
+    connect(dashDotDotLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setDashDotDotLine);
+    connect(customDashLine, &QAbstractButton::clicked,
+            m_renderer, &PathStrokeRenderer::setCustomDashLine);
 
     // Set the defaults:
     flatCap->setChecked(true);
@@ -247,15 +260,20 @@ void PathStrokeControls::layoutForDesktop()
 
 
     // Set up connections
-    connect(animated, &QAbstractButton::toggled, m_renderer, &PathStrokeRenderer::setAnimation);
+    connect(animated, &QAbstractButton::toggled,
+            m_renderer, &PathStrokeRenderer::setAnimation);
 
-    connect(penWidth, &QAbstractSlider::valueChanged, m_renderer, &PathStrokeRenderer::setPenWidth);
+    connect(penWidth, &QAbstractSlider::valueChanged,
+            m_renderer, &PathStrokeRenderer::setPenWidth);
 
-    connect(showSourceButton, &QAbstractButton::clicked, m_renderer, &ArthurFrame::showSource);
+    connect(showSourceButton, &QAbstractButton::clicked,
+            m_renderer, &ArthurFrame::showSource);
 #if QT_CONFIG(opengl)
-    connect(enableOpenGLButton, &QAbstractButton::clicked, m_renderer, &ArthurFrame::enableOpenGL);
+    connect(enableOpenGLButton, &QAbstractButton::clicked,
+            m_renderer, &ArthurFrame::enableOpenGL);
 #endif
-    connect(whatsThisButton, &QAbstractButton::clicked, m_renderer, &ArthurFrame::setDescriptionEnabled);
+    connect(whatsThisButton, &QAbstractButton::clicked,
+            m_renderer, &ArthurFrame::setDescriptionEnabled);
     connect(m_renderer, &ArthurFrame::descriptionEnabledChanged,
             whatsThisButton, &QAbstractButton::setChecked);
 
@@ -296,11 +314,11 @@ void PathStrokeControls::layoutForSmallScreens()
 #endif
 
     // Layouts:
-    QHBoxLayout *penWidthLayout = new QHBoxLayout(0);
+    QHBoxLayout *penWidthLayout = new QHBoxLayout;
     penWidthLayout->addWidget(penWidthLabel, 0, Qt::AlignRight);
     penWidthLayout->addWidget(penWidth);
 
-    QVBoxLayout *leftLayout = new QVBoxLayout(0);
+    QVBoxLayout *leftLayout = new QVBoxLayout;
     leftLayout->addWidget(m_capGroup);
     leftLayout->addWidget(m_joinGroup);
 #if QT_CONFIG(opengl)
@@ -308,7 +326,7 @@ void PathStrokeControls::layoutForSmallScreens()
 #endif
     leftLayout->addLayout(penWidthLayout);
 
-    QVBoxLayout *rightLayout = new QVBoxLayout(0);
+    QVBoxLayout *rightLayout = new QVBoxLayout;
     rightLayout->addWidget(m_styleGroup);
     rightLayout->addWidget(m_pathModeGroup);
 
@@ -356,7 +374,7 @@ PathStrokeWidget::PathStrokeWidget(bool smallScreen)
     // Widget construction and property setting
     m_renderer = new PathStrokeRenderer(this, smallScreen);
 
-    m_controls = new PathStrokeControls(0, m_renderer, smallScreen);
+    m_controls = new PathStrokeControls(nullptr, m_renderer, smallScreen);
 
     // Layouting
     QHBoxLayout *viewLayout = new QHBoxLayout(this);
@@ -383,10 +401,10 @@ void PathStrokeWidget::hideControls()
     m_controls->hide();
 }
 
-void PathStrokeWidget::setStyle( QStyle * style )
+void PathStrokeWidget::setStyle(QStyle *style)
 {
     QWidget::setStyle(style);
-    if (m_controls != 0)
+    if (m_controls != nullptr)
     {
         m_controls->setStyle(style);
 
@@ -516,7 +534,7 @@ void PathStrokeRenderer::updatePoints()
     qreal bottom = height() - pad;
 
     Q_ASSERT(m_points.size() == m_vectors.size());
-    for (int i=0; i<m_points.size(); ++i) {
+    for (int i = 0; i < m_points.size(); ++i) {
         QPointF pos = m_points.at(i);
         QPointF vec = m_vectors.at(i);
         pos += vec;
@@ -540,7 +558,7 @@ void PathStrokeRenderer::mousePressEvent(QMouseEvent *e)
     setDescriptionEnabled(false);
     m_activePoint = -1;
     qreal distance = -1;
-    for (int i=0; i<m_points.size(); ++i) {
+    for (int i = 0; i < m_points.size(); ++i) {
         qreal d = QLineF(e->pos(), m_points.at(i)).length();
         if ((distance < 0 && d < 8 * m_pointSize) || d < distance) {
             distance = d;
@@ -673,7 +691,6 @@ bool PathStrokeRenderer::event(QEvent *e)
         m_fingerPointMapping.clear();
         setAnimation(m_wasAnimated);
         return true;
-        break;
     default:
         break;
     }
diff --git a/examples/widgets/painting/pathstroke/pathstroke.h b/examples/widgets/painting/pathstroke/pathstroke.h
index 7bc7e09003..b559ed2ba0 100644
--- a/examples/widgets/painting/pathstroke/pathstroke.h
+++ b/examples/widgets/painting/pathstroke/pathstroke.h
@@ -169,7 +169,7 @@ class PathStrokeWidget : public QWidget
 
 public:
     PathStrokeWidget(bool smallScreen);
-    void setStyle ( QStyle * style );
+    void setStyle(QStyle *style);
 
 private:
     PathStrokeRenderer *m_renderer;
diff --git a/examples/widgets/painting/shared/arthurstyle.h b/examples/widgets/painting/shared/arthurstyle.h
index 8ea8354bab..64c888b636 100644
--- a/examples/widgets/painting/shared/arthurstyle.h
+++ b/examples/widgets/painting/shared/arthurstyle.h
@@ -63,7 +63,7 @@ public:
     void drawHoverRect(QPainter *painter, const QRect &rect) const;
 
     void drawPrimitive(PrimitiveElement element, const QStyleOption *option,
-                       QPainter *painter, const QWidget *widget = 0) const override;
+                       QPainter *painter, const QWidget *widget = nullptr) const override;
     void drawControl(ControlElement element, const QStyleOption *option,
                      QPainter *painter, const QWidget *widget) const override;
     void drawComplexControl(ComplexControl control, const QStyleOptionComplex *option,
diff --git a/examples/widgets/painting/shared/arthurwidgets.cpp b/examples/widgets/painting/shared/arthurwidgets.cpp
index 285be99d20..40d712c9e3 100644
--- a/examples/widgets/painting/shared/arthurwidgets.cpp
+++ b/examples/widgets/painting/shared/arthurwidgets.cpp
@@ -136,7 +136,7 @@ void ArthurFrame::createGlWindow()
 
 void ArthurFrame::paintEvent(QPaintEvent *e)
 {
-    static QImage *static_image = 0;
+    static QImage *static_image = nullptr;
 
     QPainter painter;
 
@@ -376,7 +376,7 @@ void ArthurFrame::showSource()
 
     const QString html = QStringLiteral("<html><pre>") + contents + QStringLiteral("</pre></html>");
 
-    QTextBrowser *sourceViewer = new QTextBrowser(0);
+    QTextBrowser *sourceViewer = new QTextBrowser;
     sourceViewer->setWindowTitle(tr("Source: %1").arg(m_sourceFileName.midRef(5)));
     sourceViewer->setParent(this, Qt::Dialog);
     sourceViewer->setAttribute(Qt::WA_DeleteOnClose);
diff --git a/examples/widgets/painting/shared/fbopaintdevice.cpp b/examples/widgets/painting/shared/fbopaintdevice.cpp
index 8207090cc8..9368293218 100644
--- a/examples/widgets/painting/shared/fbopaintdevice.cpp
+++ b/examples/widgets/painting/shared/fbopaintdevice.cpp
@@ -53,7 +53,7 @@
 #include <QOffscreenSurface>
 #include <QOpenGLFunctions>
 
-QFboPaintDevice::QFboPaintDevice(const QSize& size, bool flipped, bool clearOnInit,
+QFboPaintDevice::QFboPaintDevice(const QSize &size, bool flipped, bool clearOnInit,
                                  QOpenGLFramebufferObject::Attachment attachment)
         : QOpenGLPaintDevice(size)
 {
@@ -97,8 +97,8 @@ GLuint QFboPaintDevice::takeTexture()
 
 QImage QFboPaintDevice::toImage() const
 {
-    QOpenGLContext* currentContext = QOpenGLContext::currentContext();
-    QSurface* currentSurface = currentContext ? currentContext->surface() : 0;
+    QOpenGLContext *currentContext = QOpenGLContext::currentContext();
+    QSurface *currentSurface = currentContext ? currentContext->surface() : nullptr;
 
     context()->makeCurrent(m_surface);
 
diff --git a/examples/widgets/painting/shared/fbopaintdevice.h b/examples/widgets/painting/shared/fbopaintdevice.h
index 78451af895..a42bcc756d 100644
--- a/examples/widgets/painting/shared/fbopaintdevice.h
+++ b/examples/widgets/painting/shared/fbopaintdevice.h
@@ -60,7 +60,7 @@
 
 class QFboPaintDevice : public QOpenGLPaintDevice {
 public:
-    QFboPaintDevice(const QSize&, bool flipped = false, bool clearOnInit = true,
+    QFboPaintDevice(const QSize &size, bool flipped = false, bool clearOnInit = true,
         QOpenGLFramebufferObject::Attachment = QOpenGLFramebufferObject::CombinedDepthStencil);
     ~QFboPaintDevice();
 
@@ -83,7 +83,7 @@ public:
 
 private:
     QOpenGLFramebufferObject *m_framebufferObject;
-    QSurface* m_surface;
+    QSurface *m_surface;
 };
 
 #endif // QT_NO_OPENGL
diff --git a/examples/widgets/painting/shared/hoverpoints.cpp b/examples/widgets/painting/shared/hoverpoints.cpp
index 2032fb5a2c..2bf3963e9e 100644
--- a/examples/widgets/painting/shared/hoverpoints.cpp
+++ b/examples/widgets/painting/shared/hoverpoints.cpp
@@ -262,8 +262,8 @@ bool HoverPoints::eventFilter(QObject *object, QEvent *event)
         case QEvent::Paint:
         {
             QWidget *that_widget = m_widget;
-            m_widget = 0;
-            QApplication::sendEvent(object, event);
+            m_widget = nullptr;
+            QCoreApplication::sendEvent(object, event);
             m_widget = that_widget;
             paintPoints();
             return true;
diff --git a/examples/widgets/painting/transformations/renderarea.h b/examples/widgets/painting/transformations/renderarea.h
index 140be27b2b..d4be7cefa4 100644
--- a/examples/widgets/painting/transformations/renderarea.h
+++ b/examples/widgets/painting/transformations/renderarea.h
@@ -70,7 +70,7 @@ class RenderArea : public QWidget
     Q_OBJECT
 
 public:
-    RenderArea(QWidget *parent = 0);
+    RenderArea(QWidget *parent = nullptr);
 
     void setOperations(const QList<Operation> &operations);
     void setShape(const QPainterPath &shape);
diff --git a/examples/widgets/richtext/textedit/textedit.cpp b/examples/widgets/richtext/textedit/textedit.cpp
index 996bb8e0a4..85fb83ab89 100644
--- a/examples/widgets/richtext/textedit/textedit.cpp
+++ b/examples/widgets/richtext/textedit/textedit.cpp
@@ -640,7 +640,7 @@ void TextEdit::textStyle(int styleIndex)
 {
     QTextCursor cursor = textEdit->textCursor();
     QTextListFormat::Style style = QTextListFormat::ListStyleUndefined;
-    QTextBlockFormat::MarkerType marker = QTextBlockFormat::NoMarker;
+    QTextBlockFormat::MarkerType marker = QTextBlockFormat::MarkerType::NoMarker;
 
     switch (styleIndex) {
     case 1:
@@ -657,14 +657,14 @@ void TextEdit::textStyle(int styleIndex)
             style = cursor.currentList()->format().style();
         else
             style = QTextListFormat::ListDisc;
-        marker = QTextBlockFormat::Unchecked;
+        marker = QTextBlockFormat::MarkerType::Unchecked;
         break;
     case 5:
         if (cursor.currentList())
             style = cursor.currentList()->format().style();
         else
             style = QTextListFormat::ListDisc;
-        marker = QTextBlockFormat::Checked;
+        marker = QTextBlockFormat::MarkerType::Checked;
         break;
     case 6:
         style = QTextListFormat::ListDecimal;
@@ -823,14 +823,14 @@ void TextEdit::cursorPositionChanged()
             break;
         }
         switch (textEdit->textCursor().block().blockFormat().marker()) {
-        case QTextBlockFormat::NoMarker:
+        case QTextBlockFormat::MarkerType::NoMarker:
             actionToggleCheckState->setChecked(false);
             break;
-        case QTextBlockFormat::Unchecked:
+        case QTextBlockFormat::MarkerType::Unchecked:
             comboStyle->setCurrentIndex(4);
             actionToggleCheckState->setChecked(false);
             break;
-        case QTextBlockFormat::Checked:
+        case QTextBlockFormat::MarkerType::Checked:
             comboStyle->setCurrentIndex(5);
             actionToggleCheckState->setChecked(true);
             break;
diff --git a/examples/widgets/scroller/graphicsview/main.cpp b/examples/widgets/scroller/graphicsview/main.cpp
index d6b2956d50..178c431e6c 100644
--- a/examples/widgets/scroller/graphicsview/main.cpp
+++ b/examples/widgets/scroller/graphicsview/main.cpp
@@ -64,7 +64,7 @@ class RectObject : public QGraphicsObject
 
 public:
 
-    RectObject(const QString &text, qreal x, qreal y, qreal width, qreal height, QBrush brush, QGraphicsItem *parent = 0)
+    RectObject(const QString &text, qreal x, qreal y, qreal width, qreal height, QBrush brush, QGraphicsItem *parent = nullptr)
         : QGraphicsObject(parent)
         , m_text(text)
         , m_rect(x, y, width, height)
diff --git a/examples/widgets/statemachine/eventtransitions/main.cpp b/examples/widgets/statemachine/eventtransitions/main.cpp
index 2de8e5daa3..fe9518092f 100644
--- a/examples/widgets/statemachine/eventtransitions/main.cpp
+++ b/examples/widgets/statemachine/eventtransitions/main.cpp
@@ -48,13 +48,18 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
+#include <QApplication>
+#include <QEventTransition>
+#include <QPushButton>
+#include <QStateMachine>
+#include <QVBoxLayout>
+#include <QWidget>
 
 //! [0]
 class Window : public QWidget
 {
 public:
-    Window(QWidget *parent = 0)
+    Window(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         QPushButton *button = new QPushButton(this);
diff --git a/examples/widgets/statemachine/factorial/main.cpp b/examples/widgets/statemachine/factorial/main.cpp
index e9431596fe..e6cbdcae29 100644
--- a/examples/widgets/statemachine/factorial/main.cpp
+++ b/examples/widgets/statemachine/factorial/main.cpp
@@ -57,10 +57,7 @@ class Factorial : public QObject
     Q_PROPERTY(int x READ x WRITE setX)
     Q_PROPERTY(int fac READ fac WRITE setFac)
 public:
-    Factorial(QObject *parent = 0)
-        : QObject(parent), m_x(-1), m_fac(1)
-    {
-    }
+    using QObject::QObject;
 
     int x() const
     {
@@ -89,8 +86,8 @@ Q_SIGNALS:
     void xChanged(int value);
 
 private:
-    int m_x;
-    int m_fac;
+    int m_x = -1;
+    int m_fac = 1;
 };
 //! [0]
 
diff --git a/examples/widgets/statemachine/trafficlight/main.cpp b/examples/widgets/statemachine/trafficlight/main.cpp
index a12d2f10d1..dd8bddcb37 100644
--- a/examples/widgets/statemachine/trafficlight/main.cpp
+++ b/examples/widgets/statemachine/trafficlight/main.cpp
@@ -48,7 +48,13 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
+#include <QApplication>
+#include <QFinalState>
+#include <QPainter>
+#include <QStateMachine>
+#include <QTimer>
+#include <QVBoxLayout>
+#include <QWidget>
 
 //! [0]
 class LightWidget : public QWidget
@@ -56,7 +62,7 @@ class LightWidget : public QWidget
     Q_OBJECT
     Q_PROPERTY(bool on READ isOn WRITE setOn)
 public:
-    LightWidget(const QColor &color, QWidget *parent = 0)
+    LightWidget(const QColor &color, QWidget *parent = nullptr)
         : QWidget(parent), m_color(color), m_on(false) {}
 
     bool isOn() const
@@ -94,7 +100,7 @@ private:
 class TrafficLightWidget : public QWidget
 {
 public:
-    TrafficLightWidget(QWidget *parent = 0)
+    TrafficLightWidget(QWidget *parent = nullptr)
         : QWidget(parent)
     {
         QVBoxLayout *vbox = new QVBoxLayout(this);
@@ -125,7 +131,7 @@ private:
 //! [1]
 
 //! [2]
-QState *createLightState(LightWidget *light, int duration, QState *parent = 0)
+QState *createLightState(LightWidget *light, int duration, QState *parent = nullptr)
 {
     QState *lightState = new QState(parent);
     QTimer *timer = new QTimer(lightState);
diff --git a/examples/widgets/touch/fingerpaint/scribblearea.h b/examples/widgets/touch/fingerpaint/scribblearea.h
index 5138e3a1ab..fcdde53cc4 100644
--- a/examples/widgets/touch/fingerpaint/scribblearea.h
+++ b/examples/widgets/touch/fingerpaint/scribblearea.h
@@ -62,7 +62,7 @@ class ScribbleArea : public QWidget
     Q_OBJECT
 
 public:
-    ScribbleArea(QWidget *parent = 0);
+    ScribbleArea(QWidget *parent = nullptr);
 
     bool openImage(const QString &fileName);
     bool saveImage(const QString &fileName, const char *fileFormat);
diff --git a/examples/widgets/touch/pinchzoom/graphicsview.cpp b/examples/widgets/touch/pinchzoom/graphicsview.cpp
index 54e134aea2..6412f350a7 100644
--- a/examples/widgets/touch/pinchzoom/graphicsview.cpp
+++ b/examples/widgets/touch/pinchzoom/graphicsview.cpp
@@ -54,7 +54,7 @@
 #include <QTouchEvent>
 
 GraphicsView::GraphicsView(QGraphicsScene *scene, QWidget *parent)
-    : QGraphicsView(scene, parent), totalScaleFactor(1)
+    : QGraphicsView(scene, parent)
 {
     viewport()->setAttribute(Qt::WA_AcceptTouchEvents);
     setDragMode(ScrollHandDrag);
@@ -83,8 +83,8 @@ bool GraphicsView::viewportEvent(QEvent *event)
                 totalScaleFactor *= currentScaleFactor;
                 currentScaleFactor = 1;
             }
-            setTransform(QTransform().scale(totalScaleFactor * currentScaleFactor,
-                                            totalScaleFactor * currentScaleFactor));
+            setTransform(QTransform::fromScale(totalScaleFactor * currentScaleFactor,
+                                               totalScaleFactor * currentScaleFactor));
         }
         return true;
     }
diff --git a/examples/widgets/touch/pinchzoom/graphicsview.h b/examples/widgets/touch/pinchzoom/graphicsview.h
index d4e2e32d36..c0faeba444 100644
--- a/examples/widgets/touch/pinchzoom/graphicsview.h
+++ b/examples/widgets/touch/pinchzoom/graphicsview.h
@@ -56,10 +56,10 @@ class GraphicsView : public QGraphicsView
     Q_OBJECT
 
 public:
-    GraphicsView(QGraphicsScene *scene = 0, QWidget *parent = 0);
+    GraphicsView(QGraphicsScene *scene = nullptr, QWidget *parent = nullptr);
 
     bool viewportEvent(QEvent *event) override;
 
 private:
-    qreal totalScaleFactor;
+    qreal totalScaleFactor = 1;
 };
diff --git a/examples/widgets/touch/pinchzoom/main.cpp b/examples/widgets/touch/pinchzoom/main.cpp
index 938432600f..2c2ba39a26 100644
--- a/examples/widgets/touch/pinchzoom/main.cpp
+++ b/examples/widgets/touch/pinchzoom/main.cpp
@@ -51,11 +51,10 @@
 #include "graphicsview.h"
 #include "mouse.h"
 
-#include <QtWidgets>
+#include <QApplication>
+#include <cmath>
 
-#include <math.h>
-
-static const int MouseCount = 7;
+static constexpr int MouseCount = 7;
 
 //! [0]
 int main(int argc, char **argv)
diff --git a/examples/widgets/touch/pinchzoom/mouse.cpp b/examples/widgets/touch/pinchzoom/mouse.cpp
index 1dfd7d749c..8456a0214d 100644
--- a/examples/widgets/touch/pinchzoom/mouse.cpp
+++ b/examples/widgets/touch/pinchzoom/mouse.cpp
@@ -56,8 +56,8 @@
 #include <QStyleOption>
 #include <qmath.h>
 
-const qreal Pi = M_PI;
-const qreal TwoPi = 2 * M_PI;
+constexpr qreal Pi = M_PI;
+constexpr qreal TwoPi = 2 * M_PI;
 
 static qreal normalizeAngle(qreal angle)
 {
@@ -69,9 +69,9 @@ static qreal normalizeAngle(qreal angle)
 }
 
 //! [0]
-Mouse::Mouse()
-    : angle(0), speed(0), mouseEyeDirection(0),
-      color(QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256), QRandomGenerator::global()->bounded(256))
+Mouse::Mouse() : color(QRandomGenerator::global()->bounded(256),
+                       QRandomGenerator::global()->bounded(256),
+                       QRandomGenerator::global()->bounded(256))
 {
     setTransform(QTransform().rotate(QRandomGenerator::global()->bounded(360 * 16)), true);
     startTimer(1000 / 33);
diff --git a/examples/widgets/touch/pinchzoom/mouse.h b/examples/widgets/touch/pinchzoom/mouse.h
index 870bfcd6c0..8ac110821e 100644
--- a/examples/widgets/touch/pinchzoom/mouse.h
+++ b/examples/widgets/touch/pinchzoom/mouse.h
@@ -70,9 +70,9 @@ protected:
     void timerEvent(QTimerEvent *event) override;
 
 private:
-    qreal angle;
-    qreal speed;
-    qreal mouseEyeDirection;
+    qreal angle = 0;
+    qreal speed = 0;
+    qreal mouseEyeDirection = 0;
     QColor color;
 };
 //! [0]
diff --git a/examples/widgets/tutorials/addressbook/part1/addressbook.h b/examples/widgets/tutorials/addressbook/part1/addressbook.h
index 1d575e1260..4c2b456a41 100644
--- a/examples/widgets/tutorials/addressbook/part1/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part1/addressbook.h
@@ -65,7 +65,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 private:
     QLineEdit *nameLine;
diff --git a/examples/widgets/tutorials/addressbook/part2/addressbook.h b/examples/widgets/tutorials/addressbook/part2/addressbook.h
index 7b1714b443..e690d14244 100644
--- a/examples/widgets/tutorials/addressbook/part2/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part2/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 //! [slots]
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part3/addressbook.h b/examples/widgets/tutorials/addressbook/part3/addressbook.h
index 746a58a32a..f4a8aaa976 100644
--- a/examples/widgets/tutorials/addressbook/part3/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part3/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 
 public slots:
     void addContact();
diff --git a/examples/widgets/tutorials/addressbook/part4/addressbook.h b/examples/widgets/tutorials/addressbook/part4/addressbook.h
index a8d4d9fe1d..307df1eb15 100644
--- a/examples/widgets/tutorials/addressbook/part4/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part4/addressbook.h
@@ -66,7 +66,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
 //! [Mode enum]
     enum Mode { NavigationMode, AddingMode, EditingMode };
 //! [Mode enum]
diff --git a/examples/widgets/tutorials/addressbook/part5/addressbook.h b/examples/widgets/tutorials/addressbook/part5/addressbook.h
index b60929a50c..9dd7ed1d89 100644
--- a/examples/widgets/tutorials/addressbook/part5/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part5/addressbook.h
@@ -69,7 +69,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part5/finddialog.h b/examples/widgets/tutorials/addressbook/part5/finddialog.h
index 0fca6be81b..8e63eeee79 100644
--- a/examples/widgets/tutorials/addressbook/part5/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part5/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part6/addressbook.h b/examples/widgets/tutorials/addressbook/part6/addressbook.h
index 8d328310f7..fca62c52b7 100644
--- a/examples/widgets/tutorials/addressbook/part6/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part6/addressbook.h
@@ -68,7 +68,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part6/finddialog.h b/examples/widgets/tutorials/addressbook/part6/finddialog.h
index 527e0254e9..46f8047a56 100644
--- a/examples/widgets/tutorials/addressbook/part6/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part6/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part7/addressbook.h b/examples/widgets/tutorials/addressbook/part7/addressbook.h
index 0f109b2ef1..47a0f3c062 100644
--- a/examples/widgets/tutorials/addressbook/part7/addressbook.h
+++ b/examples/widgets/tutorials/addressbook/part7/addressbook.h
@@ -68,7 +68,7 @@ class AddressBook : public QWidget
     Q_OBJECT
 
 public:
-    AddressBook(QWidget *parent = 0);
+    AddressBook(QWidget *parent = nullptr);
     enum Mode { NavigationMode, AddingMode, EditingMode };
 
 public slots:
diff --git a/examples/widgets/tutorials/addressbook/part7/finddialog.h b/examples/widgets/tutorials/addressbook/part7/finddialog.h
index 527e0254e9..46f8047a56 100644
--- a/examples/widgets/tutorials/addressbook/part7/finddialog.h
+++ b/examples/widgets/tutorials/addressbook/part7/finddialog.h
@@ -63,7 +63,7 @@ class FindDialog : public QDialog
     Q_OBJECT
 
 public:
-    FindDialog(QWidget *parent = 0);
+    FindDialog(QWidget *parent = nullptr);
     QString getFindText();
 
 public slots:
diff --git a/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp b/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
index 2330019f93..90a8c6e894 100644
--- a/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
+++ b/examples/widgets/tutorials/modelview/3_changingmodel/main.cpp
@@ -56,7 +56,7 @@ int main(int argc, char *argv[])
 {
     QApplication a(argc, argv);
     QTableView tableView;
-    MyModel myModel(0);
+    MyModel myModel;
     tableView.setModel(&myModel);
     tableView.show();
     return a.exec();
diff --git a/examples/widgets/tutorials/modelview/7_selections/mainwindow.h b/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
index c9761dd3d9..74906c831d 100644
--- a/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
+++ b/examples/widgets/tutorials/modelview/7_selections/mainwindow.h
@@ -69,7 +69,7 @@ private:
 private slots:
     void selectionChangedSlot(const QItemSelection &newSelection, const QItemSelection &oldSelection);
 public:
-    MainWindow(QWidget *parent = 0);
+    MainWindow(QWidget *parent = nullptr);
 };
 
 #endif // MAINWINDOW_H
diff --git a/examples/widgets/tutorials/notepad/notepad.h b/examples/widgets/tutorials/notepad/notepad.h
index 9580ab8071..5e44dfeedc 100644
--- a/examples/widgets/tutorials/notepad/notepad.h
+++ b/examples/widgets/tutorials/notepad/notepad.h
@@ -72,7 +72,7 @@ class Notepad : public QMainWindow
 
 //! [4]
 public:
-    explicit Notepad(QWidget *parent = 0);
+    explicit Notepad(QWidget *parent = nullptr);
 //! [4]
 //! [5]
     ~Notepad();
diff --git a/examples/widgets/windowcontainer/windowcontainer.cpp b/examples/widgets/windowcontainer/windowcontainer.cpp
index 9f2124c4e1..b920c85420 100644
--- a/examples/widgets/windowcontainer/windowcontainer.cpp
+++ b/examples/widgets/windowcontainer/windowcontainer.cpp
@@ -50,16 +50,14 @@
 
 #include "openglwindow.h"
 
-#include <QPainter>
-#include <QMouseEvent>
-#include <QKeyEvent>
-#include <QFocusEvent>
-
 #include <QApplication>
-#include <QWidget>
+#include <QFocusEvent>
 #include <QHBoxLayout>
+#include <QKeyEvent>
 #include <QLineEdit>
-
+#include <QMouseEvent>
+#include <QPainter>
+#include <QWidget>
 
 
 // Making use of the class from the opengl example in gui.
@@ -67,13 +65,10 @@ class Window : public OpenGLWindow
 {
     Q_OBJECT
 public:
-    Window()
-        : m_mouseDown(false)
-        , m_focus(false)
-    {
-    }
+    using OpenGLWindow::OpenGLWindow;
 
-    void render(QPainter *p) override {
+    void render(QPainter *p) override
+    {
         QLinearGradient g(0, 0, 0, height());
         g.setColorAt(0, QColor("lightsteelblue"));
         g.setColorAt(1, Qt::black);
@@ -93,15 +88,15 @@ public:
             p->restore();
         }
 
-        if (m_focus) {
+        if (m_focus)
             p->drawText(20, height() - 20, QLatin1String("Window has focus!"));
-        }
 
         p->setRenderHint(QPainter::Antialiasing);
         p->drawPolyline(m_polygon);
     }
 
-    void mousePressEvent(QMouseEvent *e) override {
+    void mousePressEvent(QMouseEvent *e) override
+    {
         if (!m_mouseDown) {
             m_mouseDown = true;
             m_polygon.clear();
@@ -110,14 +105,16 @@ public:
         }
     }
 
-    void mouseMoveEvent(QMouseEvent *e) override {
+    void mouseMoveEvent(QMouseEvent *e) override
+    {
         if (m_mouseDown) {
             m_polygon.append(e->pos());
             renderLater();
         }
     }
 
-    void mouseReleaseEvent(QMouseEvent *e) override {
+    void mouseReleaseEvent(QMouseEvent *e) override
+    {
         if (m_mouseDown) {
             m_mouseDown = false;
             m_polygon.append(e->pos());
@@ -125,33 +122,35 @@ public:
         }
     }
 
-    void focusInEvent(QFocusEvent *) override {
+    void focusInEvent(QFocusEvent *) override
+    {
         m_focus = true;
         renderLater();
     }
 
-    void focusOutEvent(QFocusEvent *) override {
+    void focusOutEvent(QFocusEvent *) override
+    {
         m_focus = false;
         m_polygon.clear();
         renderLater();
     }
 
-    void keyPressEvent(QKeyEvent *e) override {
+    void keyPressEvent(QKeyEvent *e) override
+    {
         m_key = e->text();
         renderLater();
     }
 
-    void keyReleaseEvent(QKeyEvent *) override {
+    void keyReleaseEvent(QKeyEvent *) override
+    {
         m_key = QString();
         renderLater();
     }
 private:
     QPolygon m_polygon;
-    bool m_mouseDown;
-
-    bool m_focus;
-
     QString m_key;
+    bool m_mouseDown = false;
+    bool m_focus = false;
 };
 
 
@@ -162,7 +161,7 @@ int main(int argc, char *argv[])
     QWidget *widget = new QWidget;
     QHBoxLayout *layout = new QHBoxLayout(widget);
 
-    Window *window = new Window();
+    Window *window = new Window;
 
     QWidget *container = QWidget::createWindowContainer(window);
     container->setMinimumSize(300, 300);
diff --git a/mkspecs/features/qt_configure.prf b/mkspecs/features/qt_configure.prf
index 52baca1fbb..adac835c26 100644
--- a/mkspecs/features/qt_configure.prf
+++ b/mkspecs/features/qt_configure.prf
@@ -758,9 +758,7 @@ defineTest(qtConfLibrary_pkgConfig) {
     !qtConfResolveLibs($${1}.libs, $$libs): \
         return(false)
     contains($${1}.libs, ".*\\.$${QMAKE_EXTENSION_STATICLIB}$") {
-        qtRunLoggedCommand("$$pkg_config --static --libs-only-L $$args", libpaths)|return(false)
-        qtRunLoggedCommand("$$pkg_config --static --libs-only-l $$args", libs)|return(false)
-        eval(libs = $$libpaths $$libs)
+        qtRunLoggedCommand("$$pkg_config --static --libs $$args", libs)|return(false)
         !qtConfResolveLibs($${1}.libs, $$libs): \
             return(false)
     }
diff --git a/mkspecs/features/qt_functions.prf b/mkspecs/features/qt_functions.prf
index ee6a4b352a..661b7dd961 100644
--- a/mkspecs/features/qt_functions.prf
+++ b/mkspecs/features/qt_functions.prf
@@ -159,8 +159,12 @@ defineTest(qtAddToolEnv) {
         !isEmpty(cmd): cmd = "$$cmd "
         equals(ds, /) {
             batch_name = $${batch_name}.sh
+            equals(QMAKE_HOST.os, Darwin):exists(/bin/bash): \
+                shell = /bin/bash
+            else: \
+                shell = /bin/sh
             batch_cont = \
-                "$$LITERAL_HASH!/bin/sh" \
+                "$$LITERAL_HASH!$$shell" \
                 $$batch_sets \
                 "exec $$cmd\"$@\""
             # It would be nicer to use the '.' command (without 'exec' above),
diff --git a/mkspecs/features/qt_tracepoints.prf b/mkspecs/features/qt_tracepoints.prf
index d1b45a47cb..56d315e1cd 100644
--- a/mkspecs/features/qt_tracepoints.prf
+++ b/mkspecs/features/qt_tracepoints.prf
@@ -16,7 +16,7 @@ PROVIDER_NAME = qt$$lower($$MODULE)
 INCLUDEPATH += $$absolute_path($$TRACEGEN_DIR, $$OUT_PWD)
 HEADER_PATH = $$OUT_PWD/$$TRACEGEN_DIR/$${PROVIDER_NAME}_tracepoints_p$${first(QMAKE_EXT_H)}
 
-!force_bootstrap:if(qtConfig(lttng)|qtConfig(etw)) {
+if(qtConfig(lttng)|qtConfig(etw)) {
     SOURCE_PATH = $$OUT_PWD/$$TRACEGEN_DIR/$${PROVIDER_NAME}_tracepoints$${first(QMAKE_EXT_CPP)}
 
     isEmpty(BUILDS)|build_pass {
diff --git a/mkspecs/features/uikit/xcodebuild.mk b/mkspecs/features/uikit/xcodebuild.mk
index 0c8d99f4b8..e1156d0e76 100644
--- a/mkspecs/features/uikit/xcodebuild.mk
+++ b/mkspecs/features/uikit/xcodebuild.mk
@@ -27,8 +27,8 @@ distclean: clean_all
 $(EXPORT_SUBTARGETS): % : %-build
 
 # Generic targets
-%_first: $(firstword $(call targets, %)) ;
-%_all: $(call targets, %) ;
+%_first: $(EXPORT_PRE_TARGETDEPS) $(firstword $(call targets, %)) ;
+%_all: $(EXPORT_PRE_TARGETDEPS) $(call targets, %) ;
 
 # Actions
 %-build: ACTION = build
diff --git a/mkspecs/features/uikit/xcodebuild.prf b/mkspecs/features/uikit/xcodebuild.prf
index 7a6b2acfc2..01022c7b99 100644
--- a/mkspecs/features/uikit/xcodebuild.prf
+++ b/mkspecs/features/uikit/xcodebuild.prf
@@ -29,6 +29,8 @@ cmd = "$$QMAKE_QMAKE $$system_quote($$_PRO_FILE_) -spec macx-xcode $$args"
 debug(1, "Generating Xcode project in $$OUT_PWD using '$$cmd'")
 system("$$QMAKE_CD $$system_quote($$OUT_PWD) && $$cmd")
 
+QMAKE_EXTRA_VARIABLES += PRE_TARGETDEPS
+
 # Subtargets
 
 for(build, BUILDS): \
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index ebacd8a0c6..aa83cf2bcc 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -569,6 +569,23 @@ static QString getRelocatablePrefix()
 #error "The chosen platform / config does not support querying for a dynamic prefix."
 #endif
 
+#if defined(Q_OS_LINUX) && !defined(QT_STATIC) && defined(__GLIBC__)
+    // QTBUG-78948: libQt5Core.so may be located in subdirectories below libdir.
+    // See "Hardware capabilities" in the ld.so documentation and the Qt 5.3.0
+    // changelog regarding SSE2 support.
+    const QString libdir = QString::fromLatin1(
+        qt_configure_strs + qt_configure_str_offsets[QLibraryInfo::LibrariesPath - 1]);
+    QDir prefixDir(prefixPath);
+    while (!prefixDir.exists(libdir)) {
+        prefixDir.cdUp();
+        prefixPath = prefixDir.absolutePath();
+        if (prefixDir.isRoot()) {
+            prefixPath.clear();
+            break;
+        }
+    }
+#endif
+
     Q_ASSERT_X(!prefixPath.isEmpty(), "getRelocatablePrefix",
                                       "Failed to find the Qt prefix path.");
     return prefixPath;
diff --git a/src/corelib/io/qstandardpaths.cpp b/src/corelib/io/qstandardpaths.cpp
index f56fef7f8e..3b5f2f97da 100644
--- a/src/corelib/io/qstandardpaths.cpp
+++ b/src/corelib/io/qstandardpaths.cpp
@@ -232,7 +232,7 @@ QT_BEGIN_NAMESPACE
     \row \li DocumentsLocation
          \li "~/Documents"
     \row \li FontsLocation
-         \li "~/.fonts"
+         \li "~/.fonts", "~/.local/share/fonts", "/usr/local/share/fonts", "/usr/share/fonts"
     \row \li ApplicationsLocation
          \li "~/.local/share/applications", "/usr/local/share/applications", "/usr/share/applications"
     \row \li MusicLocation
diff --git a/src/corelib/io/qstandardpaths_unix.cpp b/src/corelib/io/qstandardpaths_unix.cpp
index 6425890e3f..c35d7adc9f 100644
--- a/src/corelib/io/qstandardpaths_unix.cpp
+++ b/src/corelib/io/qstandardpaths_unix.cpp
@@ -339,6 +339,9 @@ QStringList QStandardPaths::standardLocations(StandardLocation type)
         break;
     case FontsLocation:
         dirs += QDir::homePath() + QLatin1String("/.fonts");
+        dirs += xdgDataDirs();
+        for (int i = 1; i < dirs.count(); ++i)
+            dirs[i].append(QLatin1String("/fonts"));
         break;
     default:
         break;
diff --git a/src/corelib/time/qdatetime.cpp b/src/corelib/time/qdatetime.cpp
index 6ed0efe77d..95a7255a04 100644
--- a/src/corelib/time/qdatetime.cpp
+++ b/src/corelib/time/qdatetime.cpp
@@ -3861,6 +3861,9 @@ int QDateTime::offsetFromUtc() const
 
 QString QDateTime::timeZoneAbbreviation() const
 {
+    if (!isValid())
+        return QString();
+
     switch (getSpec(d)) {
     case Qt::UTC:
         return QLatin1String("UTC");
@@ -3895,6 +3898,9 @@ QString QDateTime::timeZoneAbbreviation() const
 
 bool QDateTime::isDaylightTime() const
 {
+    if (!isValid())
+        return false;
+
     switch (getSpec(d)) {
     case Qt::UTC:
     case Qt::OffsetFromUTC:
@@ -4761,17 +4767,24 @@ QDateTime QDateTime::toTimeZone(const QTimeZone &timeZone) const
     Returns \c true if this datetime is equal to the \a other datetime;
     otherwise returns \c false.
 
+    Since 5.14, all invalid datetimes are equal to one another and differ from
+    all other datetimes.
+
     \sa operator!=()
 */
 
 bool QDateTime::operator==(const QDateTime &other) const
 {
-    if (getSpec(d) == Qt::LocalTime
-        && getStatus(d) == getStatus(other.d)) {
+    if (!isValid())
+        return !other.isValid();
+    if (!other.isValid())
+        return false;
+
+    if (getSpec(d) == Qt::LocalTime && getStatus(d) == getStatus(other.d))
         return getMSecs(d) == getMSecs(other.d);
-    }
+
     // Convert to UTC and compare
-    return (toMSecsSinceEpoch() == other.toMSecsSinceEpoch());
+    return toMSecsSinceEpoch() == other.toMSecsSinceEpoch();
 }
 
 /*!
@@ -4780,8 +4793,9 @@ bool QDateTime::operator==(const QDateTime &other) const
     Returns \c true if this datetime is different from the \a other
     datetime; otherwise returns \c false.
 
-    Two datetimes are different if either the date, the time, or the
-    time zone components are different.
+    Two datetimes are different if either the date, the time, or the time zone
+    components are different. Since 5.14, any invalid datetime is less than all
+    valid datetimes.
 
     \sa operator==()
 */
@@ -4793,12 +4807,16 @@ bool QDateTime::operator==(const QDateTime &other) const
 
 bool QDateTime::operator<(const QDateTime &other) const
 {
-    if (getSpec(d) == Qt::LocalTime
-        && getStatus(d) == getStatus(other.d)) {
+    if (!isValid())
+        return other.isValid();
+    if (!other.isValid())
+        return false;
+
+    if (getSpec(d) == Qt::LocalTime && getStatus(d) == getStatus(other.d))
         return getMSecs(d) < getMSecs(other.d);
-    }
+
     // Convert to UTC and compare
-    return (toMSecsSinceEpoch() < other.toMSecsSinceEpoch());
+    return toMSecsSinceEpoch() < other.toMSecsSinceEpoch();
 }
 
 /*!
@@ -5849,7 +5867,7 @@ uint qHash(const QDateTime &key, uint seed)
     // QDate/QTime/spec/offset because QDateTime::operator== converts both arguments
     // to the same timezone. If we don't, qHash would return different hashes for
     // two QDateTimes that are equivalent once converted to the same timezone.
-    return qHash(key.toMSecsSinceEpoch(), seed);
+    return key.isValid() ? qHash(key.toMSecsSinceEpoch(), seed) : seed;
 }
 
 /*! \fn uint qHash(const QDate &key, uint seed = 0)
diff --git a/src/corelib/tools/qeasingcurve.cpp b/src/corelib/tools/qeasingcurve.cpp
index 2ae63fe135..52c8d13fe3 100644
--- a/src/corelib/tools/qeasingcurve.cpp
+++ b/src/corelib/tools/qeasingcurve.cpp
@@ -583,6 +583,13 @@ struct BezierEase : public QEasingCurveFunction
             qWarning("QEasingCurve: Invalid bezier curve");
             return x;
         }
+
+        // The bezier computation is not always precise on the endpoints, so handle explicitly
+        if (!(x > 0))
+            return 0;
+        if (!(x < 1))
+            return 1;
+
         SingleCubicBezier *singleCubicBezier = 0;
         getBezierSegment(singleCubicBezier, x);
 
@@ -998,6 +1005,11 @@ struct BackEase : public QEasingCurveFunction
 
     qreal value(qreal t) override
     {
+        // The *Back() functions are not always precise on the endpoints, so handle explicitly
+        if (!(t > 0))
+            return 0;
+        if (!(t < 1))
+            return 1;
         qreal o = (_o < 0) ? qreal(1.70158) : _o;
         switch(_t) {
         case QEasingCurve::InBack:
diff --git a/src/dbus/qdbusconnection.cpp b/src/dbus/qdbusconnection.cpp
index 58b5af3615..d6f3230fd2 100644
--- a/src/dbus/qdbusconnection.cpp
+++ b/src/dbus/qdbusconnection.cpp
@@ -871,8 +871,12 @@ bool QDBusConnection::disconnect(const QString &service, const QString &path, co
     This function does not replace existing objects: if there is already an object registered at
     path \a path, this function will return false. Use unregisterObject() to unregister it first.
 
+    The ExportChildObjects flag exports child objects on D-Bus based on the
+    path of the registered objects and the QObject::objectName of the child.
+    Therefore, it is important for the child object to have an object name.
+
     You cannot register an object as a child object of an object that
-    was registered with QDBusConnection::ExportChildObjects.
+    was registered with ExportChildObjects.
 */
 bool QDBusConnection::registerObject(const QString &path, QObject *object, RegisterOptions options)
 {
@@ -891,8 +895,12 @@ bool QDBusConnection::registerObject(const QString &path, QObject *object, Regis
     This function does not replace existing objects: if there is already an object registered at
     path \a path, this function will return false. Use unregisterObject() to unregister it first.
 
+    The ExportChildObjects flag exports child objects on D-Bus based on the
+    path of the registered objects and the QObject::objectName of the child.
+    Therefore, it is important for the child object to have an object name.
+
     You cannot register an object as a child object of an object that
-    was registered with QDBusConnection::ExportChildObjects.
+    was registered with ExportChildObjects.
 */
 bool QDBusConnection::registerObject(const QString &path, const QString &interface, QObject *object, RegisterOptions options)
 {
diff --git a/src/gui/image/qmovie.cpp b/src/gui/image/qmovie.cpp
index 3e975115ab..25fce050a1 100644
--- a/src/gui/image/qmovie.cpp
+++ b/src/gui/image/qmovie.cpp
@@ -414,7 +414,7 @@ QFrameInfo QMoviePrivate::infoForFrame(int frameNumber)
             } else {
                 // We've read all frames now. Return an end marker
                 haveReadAll = true;
-                return QFrameInfo::endMarker();
+                return frameNumber == greatestFrameNumber + 1 ? QFrameInfo::endMarker() : QFrameInfo();
             }
         }
     }
diff --git a/src/gui/kernel/qwindowsysteminterface.cpp b/src/gui/kernel/qwindowsysteminterface.cpp
index 03be72ca30..5f61853a6d 100644
--- a/src/gui/kernel/qwindowsysteminterface.cpp
+++ b/src/gui/kernel/qwindowsysteminterface.cpp
@@ -617,6 +617,7 @@ bool QWindowSystemInterface::isTouchDeviceRegistered(const QTouchDevice *device)
 static int g_nextPointId = 1;
 
 // map from device-independent point id (arbitrary) to "Qt point" ids
+QMutex QWindowSystemInterfacePrivate::pointIdMapMutex;
 typedef QMap<quint64, int> PointIdMap;
 Q_GLOBAL_STATIC(PointIdMap, g_pointIdMap)
 
@@ -634,6 +635,8 @@ Q_GLOBAL_STATIC(PointIdMap, g_pointIdMap)
 */
 static int acquireCombinedPointId(quint8 deviceId, int pointId)
 {
+    QMutexLocker locker(&QWindowSystemInterfacePrivate::pointIdMapMutex);
+
     quint64 combinedId64 = (quint64(deviceId) << 32) + pointId;
     auto it = g_pointIdMap->constFind(combinedId64);
     int uid;
@@ -693,6 +696,8 @@ QList<QTouchEvent::TouchPoint>
     }
 
     if (states == Qt::TouchPointReleased) {
+        QMutexLocker locker(&QWindowSystemInterfacePrivate::pointIdMapMutex);
+
         // All points on deviceId have been released.
         // Remove all points associated with that device from g_pointIdMap.
         // (On other devices, some touchpoints might still be pressed.
@@ -712,6 +717,7 @@ QList<QTouchEvent::TouchPoint>
 
 void QWindowSystemInterfacePrivate::clearPointIdMap()
 {
+    QMutexLocker locker(&QWindowSystemInterfacePrivate::pointIdMapMutex);
     g_pointIdMap->clear();
     g_nextPointId = 1;
 }
diff --git a/src/gui/kernel/qwindowsysteminterface_p.h b/src/gui/kernel/qwindowsysteminterface_p.h
index 540170f733..55fd181ef0 100644
--- a/src/gui/kernel/qwindowsysteminterface_p.h
+++ b/src/gui/kernel/qwindowsysteminterface_p.h
@@ -528,6 +528,7 @@ public:
 
     static QWaitCondition eventsFlushed;
     static QMutex flushEventMutex;
+    static QMutex pointIdMapMutex;
     static QAtomicInt eventAccepted;
 
     static QList<QTouchEvent::TouchPoint>
diff --git a/src/gui/text/qabstracttextdocumentlayout.cpp b/src/gui/text/qabstracttextdocumentlayout.cpp
index 5263ece87c..8b8f3e28ac 100644
--- a/src/gui/text/qabstracttextdocumentlayout.cpp
+++ b/src/gui/text/qabstracttextdocumentlayout.cpp
@@ -660,7 +660,7 @@ QTextBlock QAbstractTextDocumentLayout::blockWithMarkerAt(const QPointF &pos) co
 {
     QTextBlock block = document()->firstBlock();
     while (block.isValid()) {
-        if (block.blockFormat().marker() != QTextBlockFormat::NoMarker) {
+        if (block.blockFormat().marker() != QTextBlockFormat::MarkerType::NoMarker) {
             QRectF blockBr = blockBoundingRect(block);
             QTextBlockFormat blockFmt = block.blockFormat();
             QFontMetrics fm(block.charFormat().font());
diff --git a/src/gui/text/qtextdocumentlayout.cpp b/src/gui/text/qtextdocumentlayout.cpp
index 1d5afee16b..7be114adf9 100644
--- a/src/gui/text/qtextdocumentlayout.cpp
+++ b/src/gui/text/qtextdocumentlayout.cpp
@@ -2194,11 +2194,11 @@ void QTextDocumentLayoutPrivate::drawListItem(const QPointF &offset, QPainter *p
 
     QBrush brush = context.palette.brush(QPalette::Text);
 
-    bool marker = bl.blockFormat().marker() != QTextBlockFormat::NoMarker;
+    bool marker = bl.blockFormat().marker() != QTextBlockFormat::MarkerType::NoMarker;
     if (marker) {
         int adj = fontMetrics.lineSpacing() / 6;
         r.adjust(-adj, 0, -adj, 0);
-        if (bl.blockFormat().marker() == QTextBlockFormat::Checked) {
+        if (bl.blockFormat().marker() == QTextBlockFormat::MarkerType::Checked) {
             // ### Qt6: render with QStyle / PE_IndicatorCheckBox. We don't currently
             // have access to that here, because it would be a widget dependency.
             painter->setPen(QPen(painter->pen().color(), 2));
diff --git a/src/gui/text/qtextformat.h b/src/gui/text/qtextformat.h
index 12f14a1555..28da0fe344 100644
--- a/src/gui/text/qtextformat.h
+++ b/src/gui/text/qtextformat.h
@@ -627,7 +627,7 @@ public:
         LineDistanceHeight = 4
     };
 
-    enum MarkerType {
+    enum class MarkerType {
         NoMarker = 0,
         Unchecked = 1,
         Checked = 2
diff --git a/src/gui/text/qtextmarkdownimporter.cpp b/src/gui/text/qtextmarkdownimporter.cpp
index b96263f5fc..fe7e422923 100644
--- a/src/gui/text/qtextmarkdownimporter.cpp
+++ b/src/gui/text/qtextmarkdownimporter.cpp
@@ -190,8 +190,8 @@ int QTextMarkdownImporter::cbEnterBlock(int blockType, void *det)
         m_listItem = true;
         MD_BLOCK_LI_DETAIL *detail = static_cast<MD_BLOCK_LI_DETAIL *>(det);
         m_markerType = detail->is_task ?
-                    (detail->task_mark == ' ' ? QTextBlockFormat::Unchecked : QTextBlockFormat::Checked) :
-                    QTextBlockFormat::NoMarker;
+                    (detail->task_mark == ' ' ? QTextBlockFormat::MarkerType::Unchecked : QTextBlockFormat::MarkerType::Checked) :
+                    QTextBlockFormat::MarkerType::NoMarker;
         qCDebug(lcMD) << "LI";
     } break;
     case MD_BLOCK_UL: {
@@ -549,7 +549,7 @@ void QTextMarkdownImporter::insertBlock()
         blockFormat.setTopMargin(m_paragraphMargin);
         blockFormat.setBottomMargin(m_paragraphMargin);
     }
-    if (m_markerType == QTextBlockFormat::NoMarker)
+    if (m_markerType == QTextBlockFormat::MarkerType::NoMarker)
         blockFormat.clearProperty(QTextFormat::BlockMarker);
     else
         blockFormat.setMarker(m_markerType);
diff --git a/src/gui/text/qtextmarkdownimporter_p.h b/src/gui/text/qtextmarkdownimporter_p.h
index 1b8c2ca354..35655aff8a 100644
--- a/src/gui/text/qtextmarkdownimporter_p.h
+++ b/src/gui/text/qtextmarkdownimporter_p.h
@@ -128,7 +128,7 @@ private:
     Features m_features;
     QTextImageFormat m_imageFormat;
     QTextListFormat m_listFormat;
-    QTextBlockFormat::MarkerType m_markerType = QTextBlockFormat::NoMarker;
+    QTextBlockFormat::MarkerType m_markerType = QTextBlockFormat::MarkerType::NoMarker;
     bool m_needsInsertBlock = false;
     bool m_needsInsertList = false;
     bool m_listItem = false; // true from the beginning of LI to the end of the first P
diff --git a/src/gui/text/qtextmarkdownwriter.cpp b/src/gui/text/qtextmarkdownwriter.cpp
index cbfb092485..764c64aead 100644
--- a/src/gui/text/qtextmarkdownwriter.cpp
+++ b/src/gui/text/qtextmarkdownwriter.cpp
@@ -327,10 +327,10 @@ int QTextMarkdownWriter::writeBlock(const QTextBlock &block, bool wrap, bool ign
             break;
         }
         switch (blockFmt.marker()) {
-        case QTextBlockFormat::Checked:
+        case QTextBlockFormat::MarkerType::Checked:
             bullet += " [x]";
             break;
-        case QTextBlockFormat::Unchecked:
+        case QTextBlockFormat::MarkerType::Unchecked:
             bullet += " [ ]";
             break;
         default:
diff --git a/src/gui/text/qtextodfwriter.cpp b/src/gui/text/qtextodfwriter.cpp
index 3561c185a6..0e8666565f 100644
--- a/src/gui/text/qtextodfwriter.cpp
+++ b/src/gui/text/qtextodfwriter.cpp
@@ -358,7 +358,7 @@ void QTextOdfWriter::writeBlock(QXmlStreamWriter &writer, const QTextBlock &bloc
         int precedingSpaces = 0;
         int exportedIndex = 0;
         for (int i=0; i <= fragmentText.count(); ++i) {
-            QChar character = fragmentText[i];
+            QChar character = (i == fragmentText.count() ? QChar() : fragmentText.at(i));
             bool isSpace = character.unicode() == ' ';
 
             // find more than one space. -> <text:s text:c="2" />
diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
index b280f27fac..bf2df93d11 100644
--- a/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
+++ b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp
@@ -98,8 +98,8 @@ void QEvdevTouchManager::addDevice(const QString &deviceNode)
     qCDebug(qLcEvdevTouch, "evdevtouch: Adding device at %ls", qUtf16Printable(deviceNode));
     auto handler = qt_make_unique<QEvdevTouchScreenHandlerThread>(deviceNode, m_spec);
     if (handler) {
-        m_activeDevices.add(deviceNode, std::move(handler));
         connect(handler.get(), &QEvdevTouchScreenHandlerThread::touchDeviceRegistered, this, &QEvdevTouchManager::updateInputDeviceCount);
+        m_activeDevices.add(deviceNode, std::move(handler));
     } else {
         qWarning("evdevtouch: Failed to open touch device %ls", qUtf16Printable(deviceNode));
     }
diff --git a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
index 2cf6672da9..2df85c791b 100644
--- a/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
+++ b/src/plugins/platforms/cocoa/qcocoaapplicationdelegate.mm
@@ -171,12 +171,8 @@ QT_USE_NAMESPACE
 // This function will only be called when NSApp is actually running.
 - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
 {
-    // The reflection delegate gets precedence
-    if (reflectionDelegate) {
-        if ([reflectionDelegate respondsToSelector:@selector(applicationShouldTerminate:)])
-            return [reflectionDelegate applicationShouldTerminate:sender];
-        return NSTerminateNow;
-    }
+    if ([reflectionDelegate respondsToSelector:_cmd])
+        return [reflectionDelegate applicationShouldTerminate:sender];
 
     if ([self canQuit]) {
         if (!startedQuit) {
@@ -228,10 +224,6 @@ QT_USE_NAMESPACE
      */
     NSAppleEventManager *eventManager = [NSAppleEventManager sharedAppleEventManager];
     [eventManager setEventHandler:self
-                      andSelector:@selector(appleEventQuit:withReplyEvent:)
-                    forEventClass:kCoreEventClass
-                       andEventID:kAEQuitApplication];
-    [eventManager setEventHandler:self
                       andSelector:@selector(getUrl:withReplyEvent:)
                     forEventClass:kInternetEventClass
                        andEventID:kAEGetURL];
@@ -241,7 +233,6 @@ QT_USE_NAMESPACE
 - (void)removeAppleEventHandlers
 {
     NSAppleEventManager *eventManager = [NSAppleEventManager sharedAppleEventManager];
-    [eventManager removeEventHandlerForEventClass:kCoreEventClass andEventID:kAEQuitApplication];
     [eventManager removeEventHandlerForEventClass:kInternetEventClass andEventID:kAEGetURL];
 }
 
@@ -282,26 +273,22 @@ QT_USE_NAMESPACE
         QWindowSystemInterface::handleFileOpenEvent(qtFileName);
     }
 
-    if (reflectionDelegate &&
-        [reflectionDelegate respondsToSelector:@selector(application:openFiles:)])
+    if ([reflectionDelegate respondsToSelector:_cmd])
         [reflectionDelegate application:sender openFiles:filenames];
 
 }
 
 - (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender
 {
-    // If we have a reflection delegate, that will get to call the shots.
-    if (reflectionDelegate
-        && [reflectionDelegate respondsToSelector:
-                            @selector(applicationShouldTerminateAfterLastWindowClosed:)])
+    if ([reflectionDelegate respondsToSelector:_cmd])
         return [reflectionDelegate applicationShouldTerminateAfterLastWindowClosed:sender];
+
     return NO; // Someday qApp->quitOnLastWindowClosed(); when QApp and NSApp work closer together.
 }
 
 - (void)applicationDidBecomeActive:(NSNotification *)notification
 {
-    if (reflectionDelegate
-        && [reflectionDelegate respondsToSelector:@selector(applicationDidBecomeActive:)])
+    if ([reflectionDelegate respondsToSelector:_cmd])
         [reflectionDelegate applicationDidBecomeActive:notification];
 
     QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationActive);
@@ -309,8 +296,7 @@ QT_USE_NAMESPACE
 
 - (void)applicationDidResignActive:(NSNotification *)notification
 {
-    if (reflectionDelegate
-        && [reflectionDelegate respondsToSelector:@selector(applicationDidResignActive:)])
+    if ([reflectionDelegate respondsToSelector:_cmd])
         [reflectionDelegate applicationDidResignActive:notification];
 
     QWindowSystemInterface::handleApplicationStateChanged(Qt::ApplicationInactive);
@@ -318,10 +304,7 @@ QT_USE_NAMESPACE
 
 - (BOOL)applicationShouldHandleReopen:(NSApplication *)theApplication hasVisibleWindows:(BOOL)flag
 {
-    Q_UNUSED(theApplication);
-    Q_UNUSED(flag);
-    if (reflectionDelegate
-        && [reflectionDelegate respondsToSelector:@selector(applicationShouldHandleReopen:hasVisibleWindows:)])
+    if ([reflectionDelegate respondsToSelector:_cmd])
         return [reflectionDelegate applicationShouldHandleReopen:theApplication hasVisibleWindows:flag];
 
     /*
@@ -354,16 +337,13 @@ QT_USE_NAMESPACE
 
 - (BOOL)respondsToSelector:(SEL)aSelector
 {
-    BOOL result = [super respondsToSelector:aSelector];
-    if (!result && reflectionDelegate)
-        result = [reflectionDelegate respondsToSelector:aSelector];
-    return result;
+    return [super respondsToSelector:aSelector] || [reflectionDelegate respondsToSelector:aSelector];
 }
 
 - (void)forwardInvocation:(NSInvocation *)invocation
 {
     SEL invocationSelector = [invocation selector];
-    if (reflectionDelegate && [reflectionDelegate respondsToSelector:invocationSelector])
+    if ([reflectionDelegate respondsToSelector:invocationSelector])
         [invocation invokeWithTarget:reflectionDelegate];
     else
         [self doesNotRecognizeSelector:invocationSelector];
@@ -375,14 +355,6 @@ QT_USE_NAMESPACE
     NSString *urlString = [[event paramDescriptorForKeyword:keyDirectObject] stringValue];
     QWindowSystemInterface::handleFileOpenEvent(QUrl(QString::fromNSString(urlString)));
 }
-
-- (void)appleEventQuit:(NSAppleEventDescriptor *)event withReplyEvent:(NSAppleEventDescriptor *)replyEvent
-{
-    Q_UNUSED(event);
-    Q_UNUSED(replyEvent);
-    [NSApp terminate:self];
-}
-
 @end
 
 @implementation QCocoaApplicationDelegate (Menus)
diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
index eb316c53a8..b17302a640 100644
--- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm
+++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
@@ -560,17 +560,26 @@ void QCALayerBackingStore::flush(QWindow *flushedWindow, const QRegion &region,
         flushedView.layer.contents = nil;
     }
 
-    qCInfo(lcQpaBackingStore) << "Flushing" << backBufferSurface
-         << "to" << flushedView.layer << "of" << flushedView;
-
-    flushedView.layer.contents = backBufferSurface;
+    if (flushedView == backingStoreView) {
+        qCInfo(lcQpaBackingStore) << "Flushing" << backBufferSurface
+            << "to" << flushedView.layer << "of" << flushedView;
+        flushedView.layer.contents = backBufferSurface;
+    } else {
+        auto subviewRect = [flushedView convertRect:flushedView.bounds toView:backingStoreView];
+        auto scale = flushedView.layer.contentsScale;
+        subviewRect = CGRectApplyAffineTransform(subviewRect, CGAffineTransformMakeScale(scale, scale));
+
+        // We make a copy of the image data up front, which means we don't
+        // need to mark the IOSurface as being in use. FIXME: Investigate
+        // if there's a cheaper way to get sub-image data to a layer.
+        m_buffers.back()->lock(QPlatformGraphicsBuffer::SWReadAccess);
+        QImage subImage = m_buffers.back()->asImage()->copy(QRectF::fromCGRect(subviewRect).toRect());
+        m_buffers.back()->unlock();
 
-    if (flushedView != backingStoreView) {
-        const CGSize backingStoreSize = backingStoreView.bounds.size;
-        flushedView.layer.contentsRect = CGRectApplyAffineTransform(
-            [flushedView convertRect:flushedView.bounds toView:backingStoreView],
-            // The contentsRect is in unit coordinate system
-            CGAffineTransformMakeScale(1.0 / backingStoreSize.width, 1.0 / backingStoreSize.height));
+        qCInfo(lcQpaBackingStore) << "Flushing" << subImage
+            << "to" << flushedView.layer << "of subview" << flushedView;
+        QCFType<CGImageRef> cgImage = subImage.toCGImage();
+        flushedView.layer.contents = (__bridge id)static_cast<CGImageRef>(cgImage);
     }
 
     // Since we may receive multiple flushes before a new frame is started, we do not
diff --git a/src/plugins/platforms/windows/openglblacklists/default.json b/src/plugins/platforms/windows/openglblacklists/default.json
index 3cfa7e3856..e37351f9e0 100644
--- a/src/plugins/platforms/windows/openglblacklists/default.json
+++ b/src/plugins/platforms/windows/openglblacklists/default.json
@@ -152,6 +152,18 @@
            "features": [
                "disable_program_cache"
            ]
-        }
+        },
+        {
+           "id": 13,
+           "description": "Disable DesktopGL on Windows with Mobile Intel(R) 4 Series Express Chipset Family graphics card (QTBUG-58772)",
+           "vendor_id": "0x8086",
+           "device_id": [ "0x2A42" ],
+           "os": {
+               "type": "win"
+           },
+           "features": [
+               "disable_desktopgl"
+           ]
+       }
     ]
 }
diff --git a/src/plugins/platforms/windows/qwindowsclipboard.cpp b/src/plugins/platforms/windows/qwindowsclipboard.cpp
index b87e43f3f7..4e6d3306e1 100644
--- a/src/plugins/platforms/windows/qwindowsclipboard.cpp
+++ b/src/plugins/platforms/windows/qwindowsclipboard.cpp
@@ -115,12 +115,21 @@ static QDebug operator<<(QDebug d, const QMimeData *mimeData)
 
 IDataObject *QWindowsClipboardRetrievalMimeData::retrieveDataObject() const
 {
+    enum : int { attempts = 3 };
     IDataObject * pDataObj = nullptr;
-    if (OleGetClipboard(&pDataObj) == S_OK) {
-        if (QWindowsContext::verbose > 1)
-            qCDebug(lcQpaMime) << __FUNCTION__ << pDataObj;
-        return pDataObj;
+    // QTBUG-53979, retry in case the other application has clipboard locked
+    for (int i = 1; i <= attempts; ++i) {
+        if (SUCCEEDED(OleGetClipboard(&pDataObj))) {
+            if (QWindowsContext::verbose > 1)
+                qCDebug(lcQpaMime) << __FUNCTION__ << pDataObj;
+            return pDataObj;
+        }
+        qCWarning(lcQpaMime, i == attempts
+                  ? "Unable to obtain clipboard."
+                  : "Retrying to obtain clipboard.");
+        QThread::msleep(50);
     }
+
     return nullptr;
 }
 
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp
index 0fe22bd318..8da299d491 100644
--- a/src/plugins/platforms/xcb/qxcbscreen.cpp
+++ b/src/plugins/platforms/xcb/qxcbscreen.cpp
@@ -773,7 +773,7 @@ void QXcbScreen::updateRefreshRate(xcb_randr_mode_t mode)
             xcb_randr_mode_info_t *modeInfo = modesIter.data;
             if (modeInfo->id == mode) {
                 const uint32_t dotCount = modeInfo->htotal * modeInfo->vtotal;
-                m_refreshRate = (dotCount != 0) ? modeInfo->dot_clock / dotCount : 0;
+                m_refreshRate = (dotCount != 0) ? modeInfo->dot_clock / qreal(dotCount) : 0;
                 m_mode = mode;
                 break;
             }
diff --git a/src/plugins/platforms/xcb/qxcbscreen.h b/src/plugins/platforms/xcb/qxcbscreen.h
index 62931d2500..79698b4ef3 100644
--- a/src/plugins/platforms/xcb/qxcbscreen.h
+++ b/src/plugins/platforms/xcb/qxcbscreen.h
@@ -226,7 +226,7 @@ private:
     QRect m_availableGeometry;
     Qt::ScreenOrientation m_orientation = Qt::PrimaryOrientation;
     QXcbCursor *m_cursor;
-    int m_refreshRate = 60;
+    qreal m_refreshRate = 60.0;
     QEdidParser m_edid;
 };
 
diff --git a/src/plugins/styles/mac/qmacstyle_mac.mm b/src/plugins/styles/mac/qmacstyle_mac.mm
index 0a216e540d..63dc49fd18 100644
--- a/src/plugins/styles/mac/qmacstyle_mac.mm
+++ b/src/plugins/styles/mac/qmacstyle_mac.mm
@@ -328,6 +328,20 @@ static const int closeButtonSize = 14;
 static const qreal closeButtonCornerRadius = 2.0;
 #endif // QT_CONFIG(tabbar)
 
+#ifndef QT_NO_ACCESSIBILITY // This ifdef to avoid "unused function" warning.
+QBrush brushForToolButton(bool isOnKeyWindow)
+{
+    // When a toolbutton in a toolbar is in the 'ON' state, we draw a
+    // partially transparent background. The colors must be different
+    // for 'Aqua' and 'DarkAqua' appearances though.
+    if (isDarkMode())
+        return isOnKeyWindow ? QColor(73, 73, 73, 100) : QColor(56, 56, 56, 100);
+
+    return isOnKeyWindow ? QColor(0, 0, 0, 28) : QColor(0, 0, 0, 21);
+}
+#endif // QT_NO_ACCESSIBILITY
+
+
 static const int headerSectionArrowHeight = 6;
 static const int headerSectionSeparatorInset = 2;
 
@@ -5603,8 +5617,7 @@ void QMacStyle::drawComplexControl(ComplexControl cc, const QStyleOptionComplex
                     if (view)
                         isKey = [view.window isKeyWindow];
 
-                    QBrush brush(isKey ? QColor(0, 0, 0, 28)
-                                       : QColor(0, 0, 0, 21));
+                    QBrush brush(brushForToolButton(isKey));
                     QPainterPath path;
                     path.addRoundedRect(QRectF(tb->rect.x(), tb->rect.y(), tb->rect.width(), tb->rect.height() + 4), 4, 4);
                     p->setRenderHint(QPainter::Antialiasing);
diff --git a/src/src.pro b/src/src.pro
index 832a3b6d82..8ff3ec4c1f 100644
--- a/src/src.pro
+++ b/src/src.pro
@@ -70,7 +70,7 @@ src_winmain.depends = sub-corelib  # just for the module .pri file
 
 src_corelib.subdir = $$PWD/corelib
 src_corelib.target = sub-corelib
-src_corelib.depends = src_tools_moc src_tools_rcc
+src_corelib.depends = src_tools_moc src_tools_rcc src_tools_tracegen
 
 src_xml.subdir = $$PWD/xml
 src_xml.target = sub-xml
@@ -157,17 +157,12 @@ src_android.subdir = $$PWD/android
         src_3rdparty_freetype.depends += src_corelib
     }
 }
-SUBDIRS += src_tools_bootstrap src_tools_moc src_tools_rcc
+SUBDIRS += src_tools_bootstrap src_tools_moc src_tools_rcc src_tools_tracegen
 qtConfig(regularexpression):pcre2 {
     SUBDIRS += src_3rdparty_pcre2
     src_corelib.depends += src_3rdparty_pcre2
 }
-TOOLS = src_tools_moc src_tools_rcc src_tools_qlalr
-!force_bootstrap:if(qtConfig(lttng)|qtConfig(etw)) {
-    SUBDIRS += src_tools_tracegen
-    src_corelib.depends += src_tools_tracegen
-    TOOLS += src_tools_tracegen
-}
+TOOLS = src_tools_moc src_tools_rcc src_tools_tracegen src_tools_qlalr
 SUBDIRS += src_corelib src_tools_qlalr
 win32:SUBDIRS += src_winmain
 qtConfig(network) {
diff --git a/src/tools/tracegen/provider.h b/src/tools/tracegen/provider.h
index 9be0c33d89..a4baf56815 100644
--- a/src/tools/tracegen/provider.h
+++ b/src/tools/tracegen/provider.h
@@ -42,6 +42,7 @@
 
 #include <qvector.h>
 #include <qstring.h>
+#include <qstringlist.h>
 #include <qtypeinfo.h>
 
 struct Tracepoint
diff --git a/src/widgets/kernel/qopenglwidget.cpp b/src/widgets/kernel/qopenglwidget.cpp
index 451b18d8d3..bc5ca21b97 100644
--- a/src/widgets/kernel/qopenglwidget.cpp
+++ b/src/widgets/kernel/qopenglwidget.cpp
@@ -788,10 +788,12 @@ void QOpenGLWidgetPrivate::initialize()
     if (initialized)
         return;
 
-    // Get our toplevel's context with which we will share in order to make the
-    // texture usable by the underlying window's backingstore.
+    // If no global shared context get our toplevel's context with which we
+    // will share in order to make the texture usable by the underlying window's backingstore.
     QWidget *tlw = q->window();
-    QOpenGLContext *shareContext = get(tlw)->shareContext();
+    QOpenGLContext *shareContext = qt_gl_global_share_context();
+    if (!shareContext)
+        shareContext = get(tlw)->shareContext();
     // If shareContext is null, showing content on-screen will not work.
     // However, offscreen rendering and grabFramebuffer() will stay fully functional.
 
diff --git a/src/widgets/kernel/qwidget.cpp b/src/widgets/kernel/qwidget.cpp
index b70a03b311..588bed0366 100644
--- a/src/widgets/kernel/qwidget.cpp
+++ b/src/widgets/kernel/qwidget.cpp
@@ -7669,7 +7669,7 @@ void QWidget::show()
     else if (defaultState == Qt::WindowMaximized)
         showMaximized();
     else
-        setVisible(true); // FIXME: Why not showNormal(), like QWindow::show()?
+        setVisible(true); // Don't call showNormal() as not to clobber Qt::Window(Max/Min)imized
 }
 
 /*! \internal
diff --git a/src/widgets/styles/qfusionstyle.cpp b/src/widgets/styles/qfusionstyle.cpp
index ba2b6b0ed9..b58dc1660a 100644
--- a/src/widgets/styles/qfusionstyle.cpp
+++ b/src/widgets/styles/qfusionstyle.cpp
@@ -88,6 +88,7 @@
 #include <private/qstylehelper_p.h>
 #include <private/qdrawhelper_p.h>
 #include <private/qapplication_p.h>
+#include <private/qwidget_p.h>
 
 QT_BEGIN_NAMESPACE
 
@@ -364,6 +365,11 @@ static void qt_fusion_draw_mdibutton(QPainter *painter, const QStyleOptionTitleB
     painter->drawPoint(tmp.right() , tmp.bottom() - 1);
 }
 
+static QWindow *qt_getWindow(const QWidget *widget)
+{
+    return widget ? QWidgetPrivate::get(widget)->windowHandle(QWidgetPrivate::WindowHandleMode::Closest) : nullptr;
+}
+
 /*
     \internal
 */
@@ -995,7 +1001,7 @@ void QFusionStyle::drawPrimitive(PrimitiveElement elem,
             d->tabBarcloseButtonIcon = proxy()->standardIcon(SP_DialogCloseButton, option, widget);
         if ((option->state & State_Enabled) && (option->state & State_MouseOver))
             proxy()->drawPrimitive(PE_PanelButtonCommand, option, painter, widget);
-        QPixmap pixmap = d->tabBarcloseButtonIcon.pixmap(QSize(16, 16), QIcon::Normal, QIcon::On);
+        QPixmap pixmap = d->tabBarcloseButtonIcon.pixmap(qt_getWindow(widget), QSize(16, 16), QIcon::Normal, QIcon::On);
         proxy()->drawItemPixmap(painter, option->rect, Qt::AlignCenter, pixmap);
     }
         break;
@@ -1035,7 +1041,7 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio
             if (!cb->currentIcon.isNull()) {
                 QIcon::Mode mode = cb->state & State_Enabled ? QIcon::Normal
                                                              : QIcon::Disabled;
-                QPixmap pixmap = cb->currentIcon.pixmap(cb->iconSize, mode);
+                QPixmap pixmap = cb->currentIcon.pixmap(qt_getWindow(widget), cb->iconSize, mode);
                 QRect iconRect(editRect);
                 iconRect.setWidth(cb->iconSize.width() + 4);
                 iconRect = alignedRect(cb->direction,
@@ -1647,9 +1653,9 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio
                     iconSize = combo->iconSize();
 #endif
                 if (checked)
-                    pixmap = menuItem->icon.pixmap(iconSize, mode, QIcon::On);
+                    pixmap = menuItem->icon.pixmap(qt_getWindow(widget), iconSize, mode, QIcon::On);
                 else
-                    pixmap = menuItem->icon.pixmap(iconSize, mode);
+                    pixmap = menuItem->icon.pixmap(qt_getWindow(widget), iconSize, mode);
 
                 const int pixw = pixmap.width() / pixmap.devicePixelRatio();
                 const int pixh = pixmap.height() / pixmap.devicePixelRatio();
@@ -1783,7 +1789,7 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio
                 if (button->state & State_On)
                     state = QIcon::On;
 
-                QPixmap pixmap = button->icon.pixmap(button->iconSize, mode, state);
+                QPixmap pixmap = button->icon.pixmap(qt_getWindow(widget), button->iconSize, mode, state);
                 int w = pixmap.width() / pixmap.devicePixelRatio();
                 int h = pixmap.height() / pixmap.devicePixelRatio();
 
diff --git a/src/widgets/widgets/qabstractscrollarea.cpp b/src/widgets/widgets/qabstractscrollarea.cpp
index b295e66574..d2372a7be9 100644
--- a/src/widgets/widgets/qabstractscrollarea.cpp
+++ b/src/widgets/widgets/qabstractscrollarea.cpp
@@ -1144,11 +1144,14 @@ void QAbstractScrollArea::paintEvent(QPaintEvent*)
     mouse press events for the viewport() widget. The event is passed
     in \a e.
 
+    The default implementation calls QWidget::mousePressEvent() for
+    default popup handling.
+
     \sa QWidget::mousePressEvent()
 */
 void QAbstractScrollArea::mousePressEvent(QMouseEvent *e)
 {
-    e->ignore();
+    QWidget::mousePressEvent(e);
 }
 
 /*!
diff --git a/src/widgets/widgets/qgroupbox.cpp b/src/widgets/widgets/qgroupbox.cpp
index 69eac1ebf7..eec794562a 100644
--- a/src/widgets/widgets/qgroupbox.cpp
+++ b/src/widgets/widgets/qgroupbox.cpp
@@ -389,9 +389,13 @@ bool QGroupBox::event(QEvent *e)
 void QGroupBox::childEvent(QChildEvent *c)
 {
     Q_D(QGroupBox);
-    if (c->type() != QEvent::ChildAdded || !c->child()->isWidgetType())
+    /*
+        Children might have been enabled after being added to the group box, in which case
+        the childEvent handler ran too early, and we need to disabled children again.
+    */
+    if (!(c->added() || c->polished()) || !c->child()->isWidgetType())
         return;
-    QWidget *w = (QWidget*)c->child();
+    QWidget *w = static_cast<QWidget*>(c->child());
     if (w->isWindow())
         return;
     if (d->checkable) {
diff --git a/src/widgets/widgets/qtextedit.cpp b/src/widgets/widgets/qtextedit.cpp
index 0ccbad7eaa..dd2ea3f18f 100644
--- a/src/widgets/widgets/qtextedit.cpp
+++ b/src/widgets/widgets/qtextedit.cpp
@@ -237,7 +237,7 @@ void QTextEditPrivate::_q_hoveredBlockWithMarkerChanged(const QTextBlock &block)
     Qt::CursorShape cursor = cursorToRestoreAfterHover;
     if (block.isValid() && !q->isReadOnly()) {
         QTextBlockFormat::MarkerType marker = block.blockFormat().marker();
-        if (marker != QTextBlockFormat::NoMarker) {
+        if (marker != QTextBlockFormat::MarkerType::NoMarker) {
             if (viewport->cursor().shape() != Qt::PointingHandCursor)
                 cursorToRestoreAfterHover = viewport->cursor().shape();
             cursor = Qt::PointingHandCursor;
@@ -772,6 +772,7 @@ void QTextEdit::setAlignment(Qt::Alignment a)
     QTextCursor cursor = d->control->textCursor();
     cursor.mergeBlockFormat(fmt);
     d->control->setTextCursor(cursor);
+    d->relayoutDocument();
 }
 
 /*!
diff --git a/src/widgets/widgets/qwidgettextcontrol.cpp b/src/widgets/widgets/qwidgettextcontrol.cpp
index fdbaf29dd8..094c59a0c9 100644
--- a/src/widgets/widgets/qwidgettextcontrol.cpp
+++ b/src/widgets/widgets/qwidgettextcontrol.cpp
@@ -1810,11 +1810,11 @@ void QWidgetTextControlPrivate::mouseReleaseEvent(QEvent *e, Qt::MouseButton but
         if (markerBlock == blockWithMarkerUnderMouse) {
             auto fmt = blockWithMarkerUnderMouse.blockFormat();
             switch (fmt.marker()) {
-            case QTextBlockFormat::Unchecked :
-                fmt.setMarker(QTextBlockFormat::Checked);
+            case QTextBlockFormat::MarkerType::Unchecked :
+                fmt.setMarker(QTextBlockFormat::MarkerType::Checked);
                 break;
-            case QTextBlockFormat::Checked:
-                fmt.setMarker(QTextBlockFormat::Unchecked);
+            case QTextBlockFormat::MarkerType::Checked:
+                fmt.setMarker(QTextBlockFormat::MarkerType::Unchecked);
                 break;
             default:
                 break;
diff --git a/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp b/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
index 99176dc68d..216ae1f79e 100644
--- a/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
+++ b/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
@@ -360,6 +360,7 @@ void tst_QDateTime::ctor()
 
 void tst_QDateTime::operator_eq()
 {
+    QVERIFY(QDateTime() != QDateTime(QDate(1970, 1, 1), QTime(0, 0))); // QTBUG-79006
     QDateTime dt1(QDate(2004, 3, 24), QTime(23, 45, 57), Qt::UTC);
     QDateTime dt2(QDate(2005, 3, 11), QTime(), Qt::UTC);
     dt2 = dt1;
@@ -1675,29 +1676,30 @@ void tst_QDateTime::currentDateTimeUtc2()
 void tst_QDateTime::toSecsSinceEpoch_data()
 {
     QTest::addColumn<QString>("dateTimeStr");
-    QTest::addColumn<bool>("res");
+    QTest::addColumn<bool>("valid");
 
-    QTest::newRow( "data1" ) << str( 1800, 1, 1, 12, 0, 0 ) << false;
-    QTest::newRow( "data2" ) << str( 1969, 1, 1, 12, 0, 0 ) << false;
+    QTest::newRow( "data1" ) << str( 1800, 1, 1, 12, 0, 0 ) << true;
+    QTest::newRow( "data2" ) << str( 1969, 1, 1, 12, 0, 0 ) << true;
     QTest::newRow( "data3" ) << str( 2002, 1, 1, 12, 0, 0 ) << true;
     QTest::newRow( "data4" ) << str( 2002, 6, 1, 12, 0, 0 ) << true;
     QTest::newRow( "data5" ) << QString("INVALID") << false;
     QTest::newRow( "data6" ) << str( 2038, 1, 1, 12, 0, 0 ) << true;
     QTest::newRow( "data7" ) << str( 2063, 4, 5, 12, 0, 0 ) << true; // the day of First Contact
-    QTest::newRow( "data8" ) << str( 2107, 1, 1, 12, 0, 0 )
-                          << bool( sizeof(uint) > 32 && sizeof(time_t) > 32 );
+    QTest::newRow( "data8" ) << str( 2107, 1, 1, 12, 0, 0 ) << true;
 }
 
 void tst_QDateTime::toSecsSinceEpoch()
 {
-    QFETCH( QString, dateTimeStr );
-    QDateTime datetime = dt( dateTimeStr );
-
-    qint64 asSecsSinceEpoch = datetime.toSecsSinceEpoch();
-    QCOMPARE(asSecsSinceEpoch, datetime.toMSecsSinceEpoch() / 1000);
+    QFETCH(const QString, dateTimeStr);
+    const QDateTime datetime = dt(dateTimeStr);
+    QFETCH(const bool, valid);
+    QCOMPARE(datetime.isValid(), valid);
 
-    QDateTime datetime2 = QDateTime::fromSecsSinceEpoch(asSecsSinceEpoch);
-    QCOMPARE(datetime, datetime2);
+    if (valid) {
+        const qint64 asSecsSinceEpoch = datetime.toSecsSinceEpoch();
+        QCOMPARE(asSecsSinceEpoch, datetime.toMSecsSinceEpoch() / 1000);
+        QCOMPARE(QDateTime::fromSecsSinceEpoch(asSecsSinceEpoch), datetime);
+    }
 }
 
 #if QT_DEPRECATED_SINCE(5, 8)
@@ -1725,14 +1727,10 @@ void tst_QDateTime::toTime_t()
     uint asTime_t = datetime.toTime_t();
     QFETCH( bool, res );
     if (res) {
-        QVERIFY( asTime_t != (uint)-1 );
+        QVERIFY(asTime_t != uint(-1));
+        QCOMPARE(QDateTime::fromTime_t(asTime_t), datetime);
     } else {
-        QVERIFY( asTime_t == (uint)-1 );
-    }
-
-    if ( asTime_t != (uint) -1 ) {
-        QDateTime datetime2 = QDateTime::fromTime_t( asTime_t );
-        QCOMPARE(datetime, datetime2);
+        QCOMPARE(asTime_t, uint(-1));
     }
 }
 #endif
@@ -1929,8 +1927,8 @@ void tst_QDateTime::operator_eqeq_data()
 
     QDateTime dateTime1(QDate(2012, 6, 20), QTime(14, 33, 2, 500));
     QDateTime dateTime1a = dateTime1.addMSecs(1);
-    QDateTime dateTime2(QDate(2012, 20, 6), QTime(14, 33, 2, 500));
-    QDateTime dateTime2a = dateTime2.addMSecs(-1);
+    QDateTime dateTime2(QDate(2012, 20, 6), QTime(14, 33, 2, 500)); // Invalid
+    QDateTime dateTime2a = dateTime2.addMSecs(-1); // Still invalid
     QDateTime dateTime3(QDate(1970, 1, 1), QTime(0, 0, 0, 0), Qt::UTC); // UTC epoch
     QDateTime dateTime3a = dateTime3.addDays(1);
     QDateTime dateTime3b = dateTime3.addDays(-1);
@@ -1946,7 +1944,7 @@ void tst_QDateTime::operator_eqeq_data()
     QTest::newRow("data2") << dateTime1a << dateTime1a << true << false;
     QTest::newRow("data3") << dateTime1 << dateTime2 << false << false;
     QTest::newRow("data4") << dateTime1 << dateTime1a << false << false;
-    QTest::newRow("data5") << dateTime2 << dateTime2a << false << false;
+    QTest::newRow("data5") << dateTime2 << dateTime2a << true << false;
     QTest::newRow("data6") << dateTime2 << dateTime3 << false << false;
     QTest::newRow("data7") << dateTime3 << dateTime3a << false << false;
     QTest::newRow("data8") << dateTime3 << dateTime3b << false << false;
diff --git a/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp b/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
index 3af6132695..2a9c1e1e41 100644
--- a/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
+++ b/tests/auto/corelib/tools/qeasingcurve/tst_qeasingcurve.cpp
@@ -404,6 +404,11 @@ void tst_QEasingCurve::valueForProgress()
         const qreal error = qAbs(ex - curve.valueForProgress(at.at(i)/qreal(100)));
         QVERIFY(error <= errorBound);
     }
+
+    if (type != QEasingCurve::SineCurve && type != QEasingCurve::CosineCurve) {
+        QVERIFY( !(curve.valueForProgress(0) > 0) );
+        QVERIFY( !(curve.valueForProgress(1) < 1) );
+    }
 #endif
 }
 
@@ -632,6 +637,9 @@ void tst_QEasingCurve::bezierSpline()
             QCOMPARE(value, ex);
         QVERIFY(error <= errorBound);
     }
+
+    QVERIFY( !(bezierEasingCurve.valueForProgress(0) > 0) );
+    QVERIFY( !(bezierEasingCurve.valueForProgress(1) < 1) );
 }
 
 void tst_QEasingCurve::tcbSpline_data()
@@ -691,6 +699,9 @@ void tst_QEasingCurve::tcbSpline()
             QCOMPARE(value, ex);
         QVERIFY(error <= errorBound);
     }
+
+    QVERIFY( !(tcbEasingCurve.valueForProgress(0) > 0) );
+    QVERIFY( !(tcbEasingCurve.valueForProgress(1) < 1) );
 }
 
 /*This is single precision code for a cubic root used inside the spline easing curve.
diff --git a/tests/auto/gui/image/qmovie/tst_qmovie.cpp b/tests/auto/gui/image/qmovie/tst_qmovie.cpp
index 4e9e9b8115..c8217b2cec 100644
--- a/tests/auto/gui/image/qmovie/tst_qmovie.cpp
+++ b/tests/auto/gui/image/qmovie/tst_qmovie.cpp
@@ -62,6 +62,7 @@ private slots:
 #ifndef QT_NO_WIDGETS
     void infiniteLoop();
 #endif
+    void emptyMovie();
 };
 
 // Testing get/set functions
@@ -220,5 +221,13 @@ void tst_QMovie::infiniteLoop()
 }
 #endif
 
+void tst_QMovie::emptyMovie()
+{
+    QMovie movie;
+    movie.setCacheMode(QMovie::CacheAll);
+    movie.jumpToFrame(100);
+    QCOMPARE(movie.currentFrameNumber(), -1);
+}
+
 QTEST_MAIN(tst_QMovie)
 #include "tst_qmovie.moc"
diff --git a/tests/auto/gui/text/qtextmarkdownwriter/tst_qtextmarkdownwriter.cpp b/tests/auto/gui/text/qtextmarkdownwriter/tst_qtextmarkdownwriter.cpp
index 8d38cbb18a..1e6c354f17 100644
--- a/tests/auto/gui/text/qtextmarkdownwriter/tst_qtextmarkdownwriter.cpp
+++ b/tests/auto/gui/text/qtextmarkdownwriter/tst_qtextmarkdownwriter.cpp
@@ -159,7 +159,7 @@ void tst_QTextMarkdownWriter::testWriteNestedBulletLists()
     QTextCursor cursor(document);
     QTextBlockFormat blockFmt = cursor.blockFormat();
     if (checkbox) {
-        blockFmt.setMarker(checked ? QTextBlockFormat::Checked : QTextBlockFormat::Unchecked);
+        blockFmt.setMarker(checked ? QTextBlockFormat::MarkerType::Checked : QTextBlockFormat::MarkerType::Unchecked);
         cursor.setBlockFormat(blockFmt);
     }
 
diff --git a/tests/auto/widgets/widgets/qgroupbox/tst_qgroupbox.cpp b/tests/auto/widgets/widgets/qgroupbox/tst_qgroupbox.cpp
index 420ef56106..1b477fbbd0 100644
--- a/tests/auto/widgets/widgets/qgroupbox/tst_qgroupbox.cpp
+++ b/tests/auto/widgets/widgets/qgroupbox/tst_qgroupbox.cpp
@@ -295,6 +295,12 @@ void tst_QGroupBox::enabledChildPropagation()
     QVERIFY(!childWidget->isEnabled());
     dialog = new QDialog(&testWidget);
     QVERIFY(dialog->isEnabled());
+
+    // children that are enabled after adding should still be disabled before
+    // they are shown
+    childWidget->setEnabled(true);
+    testWidget.show();
+    QVERIFY(!childWidget->isEnabled());
 }
 
 void tst_QGroupBox::sizeHint()
author	Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org>	2019-10-13 01:00:43 +0200
committer	Qt Forward Merge Bot <qt_forward_merge_bot@qt-project.org>	2019-10-13 01:00:43 +0200
commit	8d8140dffa9aa680a519b501fc5bdf08c91dd735 (patch)
tree	346d255ca98fd79aaef9db84eac724a49285da1c
parent	e55a79b022e542a482177c2f34140c23b100b708 (diff)
parent	a90899df4330afccd8299fa81754f369e6d12344 (diff)