Add Q_DECL_OVERRIDE in the src subdirectory

Done automatically with clang-modernize on linux

(But does not add Q_DECL_OVERRIDE to the function that are marked
 as inline because it a compilation error with MSVC2010)

Change-Id: I2196ee26e3e6fe20816834ecea5ea389eeab3171
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

18 files changed, 156 insertions, 156 deletions

diff --git a/src/corelib/io/qbuffer.cpp b/src/corelib/io/qbuffer.cpp
index 5377eb21e3..200d6a0c0c 100644
--- a/src/corelib/io/qbuffer.cpp
+++ b/src/corelib/io/qbuffer.cpp
@@ -54,8 +54,8 @@ public:
     QByteArray *buf;
     QByteArray defaultBuf;
 
-    virtual qint64 peek(char *data, qint64 maxSize);
-    virtual QByteArray peek(qint64 maxSize);
+    virtual qint64 peek(char *data, qint64 maxSize) Q_DECL_OVERRIDE;
+    virtual QByteArray peek(qint64 maxSize) Q_DECL_OVERRIDE;
 
 #ifndef QT_NO_QOBJECT
     // private slots
diff --git a/src/corelib/io/qbuffer.h b/src/corelib/io/qbuffer.h
index 24b05aad13..56c80f8a7d 100644
--- a/src/corelib/io/qbuffer.h
+++ b/src/corelib/io/qbuffer.h
@@ -67,22 +67,22 @@ public:
     inline void setData(const char *data, int len);
     const QByteArray &data() const;
 
-    bool open(OpenMode openMode);
+    bool open(OpenMode openMode) Q_DECL_OVERRIDE;
 
-    void close();
-    qint64 size() const;
-    qint64 pos() const;
-    bool seek(qint64 off);
-    bool atEnd() const;
-    bool canReadLine() const;
+    void close() Q_DECL_OVERRIDE;
+    qint64 size() const Q_DECL_OVERRIDE;
+    qint64 pos() const Q_DECL_OVERRIDE;
+    bool seek(qint64 off) Q_DECL_OVERRIDE;
+    bool atEnd() const Q_DECL_OVERRIDE;
+    bool canReadLine() const Q_DECL_OVERRIDE;
 
 protected:
 #ifndef QT_NO_QOBJECT
-    void connectNotify(const QMetaMethod &);
-    void disconnectNotify(const QMetaMethod &);
+    void connectNotify(const QMetaMethod &) Q_DECL_OVERRIDE;
+    void disconnectNotify(const QMetaMethod &) Q_DECL_OVERRIDE;
 #endif
-    qint64 readData(char *data, qint64 maxlen);
-    qint64 writeData(const char *data, qint64 len);
+    qint64 readData(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
 
 private:
     Q_DECLARE_PRIVATE(QBuffer)
diff --git a/src/corelib/io/qfile.h b/src/corelib/io/qfile.h
index 75f246da96..3c44ee3397 100644
--- a/src/corelib/io/qfile.h
+++ b/src/corelib/io/qfile.h
@@ -63,7 +63,7 @@ public:
 #endif
     ~QFile();
 
-    QString fileName() const;
+    QString fileName() const Q_DECL_OVERRIDE;
     void setFileName(const QString &name);
 
 #if defined(Q_OS_DARWIN)
@@ -116,18 +116,18 @@ public:
     bool copy(const QString &newName);
     static bool copy(const QString &fileName, const QString &newName);
 
-    bool open(OpenMode flags);
+    bool open(OpenMode flags) Q_DECL_OVERRIDE;
     bool open(FILE *f, OpenMode ioFlags, FileHandleFlags handleFlags=DontCloseHandle);
     bool open(int fd, OpenMode ioFlags, FileHandleFlags handleFlags=DontCloseHandle);
 
-    qint64 size() const;
+    qint64 size() const Q_DECL_OVERRIDE;
 
-    bool resize(qint64 sz);
+    bool resize(qint64 sz) Q_DECL_OVERRIDE;
     static bool resize(const QString &filename, qint64 sz);
 
-    Permissions permissions() const;
+    Permissions permissions() const Q_DECL_OVERRIDE;
     static Permissions permissions(const QString &filename);
-    bool setPermissions(Permissions permissionSpec);
+    bool setPermissions(Permissions permissionSpec) Q_DECL_OVERRIDE;
     static bool setPermissions(const QString &filename, Permissions permissionSpec);
 
 protected:
diff --git a/src/corelib/io/qfiledevice.h b/src/corelib/io/qfiledevice.h
index b79b0055fa..ca12bb0411 100644
--- a/src/corelib/io/qfiledevice.h
+++ b/src/corelib/io/qfiledevice.h
@@ -86,19 +86,19 @@ public:
     FileError error() const;
     void unsetError();
 
-    virtual void close();
+    virtual void close() Q_DECL_OVERRIDE;
 
-    bool isSequential() const;
+    bool isSequential() const Q_DECL_OVERRIDE;
 
     int handle() const;
     virtual QString fileName() const;
 
-    qint64 pos() const;
-    bool seek(qint64 offset);
-    bool atEnd() const;
+    qint64 pos() const Q_DECL_OVERRIDE;
+    bool seek(qint64 offset) Q_DECL_OVERRIDE;
+    bool atEnd() const Q_DECL_OVERRIDE;
     bool flush();
 
-    qint64 size() const;
+    qint64 size() const Q_DECL_OVERRIDE;
 
     virtual bool resize(qint64 sz);
     virtual Permissions permissions() const;
@@ -122,9 +122,9 @@ protected:
     QFileDevice(QFileDevicePrivate &dd, QObject *parent = 0);
 #endif
 
-    qint64 readData(char *data, qint64 maxlen);
-    qint64 writeData(const char *data, qint64 len);
-    qint64 readLineData(char *data, qint64 maxlen);
+    qint64 readData(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
+    qint64 readLineData(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
 
 private:
     Q_DISABLE_COPY(QFileDevice)
diff --git a/src/corelib/io/qfiledevice_p.h b/src/corelib/io/qfiledevice_p.h
index 891a5e4be4..da29c51468 100644
--- a/src/corelib/io/qfiledevice_p.h
+++ b/src/corelib/io/qfiledevice_p.h
@@ -64,7 +64,7 @@ protected:
 
     inline bool ensureFlushed() const;
 
-    bool putCharHelper(char c);
+    bool putCharHelper(char c) Q_DECL_OVERRIDE;
 
     void setError(QFileDevice::FileError err);
     void setError(QFileDevice::FileError err, const QString &errorString);
diff --git a/src/corelib/io/qfilesystemwatcher_inotify_p.h b/src/corelib/io/qfilesystemwatcher_inotify_p.h
index a9bc8486dc..506f571e2b 100644
--- a/src/corelib/io/qfilesystemwatcher_inotify_p.h
+++ b/src/corelib/io/qfilesystemwatcher_inotify_p.h
@@ -64,8 +64,8 @@ public:
 
     static QInotifyFileSystemWatcherEngine *create(QObject *parent);
 
-    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories);
-    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories);
+    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories) Q_DECL_OVERRIDE;
+    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories) Q_DECL_OVERRIDE;
 
 private Q_SLOTS:
     void readFromInotify();
diff --git a/src/corelib/io/qfilesystemwatcher_polling_p.h b/src/corelib/io/qfilesystemwatcher_polling_p.h
index f39d72d5d8..3833869806 100644
--- a/src/corelib/io/qfilesystemwatcher_polling_p.h
+++ b/src/corelib/io/qfilesystemwatcher_polling_p.h
@@ -104,8 +104,8 @@ class QPollingFileSystemWatcherEngine : public QFileSystemWatcherEngine
 public:
     QPollingFileSystemWatcherEngine(QObject *parent);
 
-    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories);
-    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories);
+    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories) Q_DECL_OVERRIDE;
+    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories) Q_DECL_OVERRIDE;
 
 private Q_SLOTS:
     void timeout();
diff --git a/src/corelib/io/qfsfileengine_iterator_p.h b/src/corelib/io/qfsfileengine_iterator_p.h
index cc5b36fc57..35cb89673c 100644
--- a/src/corelib/io/qfsfileengine_iterator_p.h
+++ b/src/corelib/io/qfsfileengine_iterator_p.h
@@ -62,11 +62,11 @@ public:
     QFSFileEngineIterator(QDir::Filters filters, const QStringList &filterNames);
     ~QFSFileEngineIterator();
 
-    QString next();
-    bool hasNext() const;
+    QString next() Q_DECL_OVERRIDE;
+    bool hasNext() const Q_DECL_OVERRIDE;
 
-    QString currentFileName() const;
-    QFileInfo currentFileInfo() const;
+    QString currentFileName() const Q_DECL_OVERRIDE;
+    QFileInfo currentFileInfo() const Q_DECL_OVERRIDE;
 
 private:
     void advance() const;
diff --git a/src/corelib/io/qfsfileengine_p.h b/src/corelib/io/qfsfileengine_p.h
index 3963a9cb11..f843a870b8 100644
--- a/src/corelib/io/qfsfileengine_p.h
+++ b/src/corelib/io/qfsfileengine_p.h
@@ -69,46 +69,46 @@ public:
     explicit QFSFileEngine(const QString &file);
     ~QFSFileEngine();
 
-    bool open(QIODevice::OpenMode openMode);
+    bool open(QIODevice::OpenMode openMode) Q_DECL_OVERRIDE;
     bool open(QIODevice::OpenMode flags, FILE *fh);
-    bool close();
-    bool flush();
-    bool syncToDisk();
-    qint64 size() const;
-    qint64 pos() const;
-    bool seek(qint64);
-    bool isSequential() const;
-    bool remove();
-    bool copy(const QString &newName);
-    bool rename(const QString &newName);
-    bool renameOverwrite(const QString &newName);
-    bool link(const QString &newName);
-    bool mkdir(const QString &dirName, bool createParentDirectories) const;
-    bool rmdir(const QString &dirName, bool recurseParentDirectories) const;
-    bool setSize(qint64 size);
-    bool caseSensitive() const;
-    bool isRelativePath() const;
-    QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const;
-    FileFlags fileFlags(FileFlags type) const;
-    bool setPermissions(uint perms);
-    QString fileName(FileName file) const;
-    uint ownerId(FileOwner) const;
-    QString owner(FileOwner) const;
-    QDateTime fileTime(FileTime time) const;
-    void setFileName(const QString &file);
-    int handle() const;
+    bool close() Q_DECL_OVERRIDE;
+    bool flush() Q_DECL_OVERRIDE;
+    bool syncToDisk() Q_DECL_OVERRIDE;
+    qint64 size() const Q_DECL_OVERRIDE;
+    qint64 pos() const Q_DECL_OVERRIDE;
+    bool seek(qint64) Q_DECL_OVERRIDE;
+    bool isSequential() const Q_DECL_OVERRIDE;
+    bool remove() Q_DECL_OVERRIDE;
+    bool copy(const QString &newName) Q_DECL_OVERRIDE;
+    bool rename(const QString &newName) Q_DECL_OVERRIDE;
+    bool renameOverwrite(const QString &newName) Q_DECL_OVERRIDE;
+    bool link(const QString &newName) Q_DECL_OVERRIDE;
+    bool mkdir(const QString &dirName, bool createParentDirectories) const Q_DECL_OVERRIDE;
+    bool rmdir(const QString &dirName, bool recurseParentDirectories) const Q_DECL_OVERRIDE;
+    bool setSize(qint64 size) Q_DECL_OVERRIDE;
+    bool caseSensitive() const Q_DECL_OVERRIDE;
+    bool isRelativePath() const Q_DECL_OVERRIDE;
+    QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const Q_DECL_OVERRIDE;
+    FileFlags fileFlags(FileFlags type) const Q_DECL_OVERRIDE;
+    bool setPermissions(uint perms) Q_DECL_OVERRIDE;
+    QString fileName(FileName file) const Q_DECL_OVERRIDE;
+    uint ownerId(FileOwner) const Q_DECL_OVERRIDE;
+    QString owner(FileOwner) const Q_DECL_OVERRIDE;
+    QDateTime fileTime(FileTime time) const Q_DECL_OVERRIDE;
+    void setFileName(const QString &file) Q_DECL_OVERRIDE;
+    int handle() const Q_DECL_OVERRIDE;
 
 #ifndef QT_NO_FILESYSTEMITERATOR
-    Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames);
-    Iterator *endEntryList();
+    Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames) Q_DECL_OVERRIDE;
+    Iterator *endEntryList() Q_DECL_OVERRIDE;
 #endif
 
-    qint64 read(char *data, qint64 maxlen);
-    qint64 readLine(char *data, qint64 maxlen);
-    qint64 write(const char *data, qint64 len);
+    qint64 read(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    qint64 readLine(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    qint64 write(const char *data, qint64 len) Q_DECL_OVERRIDE;
 
-    bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0);
-    bool supportsExtension(Extension extension) const;
+    bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0) Q_DECL_OVERRIDE;
+    bool supportsExtension(Extension extension) const Q_DECL_OVERRIDE;
 
     //FS only!!
     bool open(QIODevice::OpenMode flags, int fd);
diff --git a/src/corelib/io/qnoncontiguousbytedevice_p.h b/src/corelib/io/qnoncontiguousbytedevice_p.h
index c05ae11b0f..1be28ff4b3 100644
--- a/src/corelib/io/qnoncontiguousbytedevice_p.h
+++ b/src/corelib/io/qnoncontiguousbytedevice_p.h
@@ -101,11 +101,11 @@ class QNonContiguousByteDeviceByteArrayImpl : public QNonContiguousByteDevice
 public:
     QNonContiguousByteDeviceByteArrayImpl(QByteArray *ba);
     ~QNonContiguousByteDeviceByteArrayImpl();
-    const char* readPointer(qint64 maximumLength, qint64 &len);
-    bool advanceReadPointer(qint64 amount);
-    bool atEnd();
-    bool reset();
-    qint64 size();
+    const char* readPointer(qint64 maximumLength, qint64 &len) Q_DECL_OVERRIDE;
+    bool advanceReadPointer(qint64 amount) Q_DECL_OVERRIDE;
+    bool atEnd() Q_DECL_OVERRIDE;
+    bool reset() Q_DECL_OVERRIDE;
+    qint64 size() Q_DECL_OVERRIDE;
 protected:
     QByteArray* byteArray;
     qint64 currentPosition;
@@ -116,11 +116,11 @@ class QNonContiguousByteDeviceRingBufferImpl : public QNonContiguousByteDevice
 public:
     QNonContiguousByteDeviceRingBufferImpl(QSharedPointer<QRingBuffer> rb);
     ~QNonContiguousByteDeviceRingBufferImpl();
-    const char* readPointer(qint64 maximumLength, qint64 &len);
-    bool advanceReadPointer(qint64 amount);
-    bool atEnd();
-    bool reset();
-    qint64 size();
+    const char* readPointer(qint64 maximumLength, qint64 &len) Q_DECL_OVERRIDE;
+    bool advanceReadPointer(qint64 amount) Q_DECL_OVERRIDE;
+    bool atEnd() Q_DECL_OVERRIDE;
+    bool reset() Q_DECL_OVERRIDE;
+    qint64 size() Q_DECL_OVERRIDE;
 protected:
     QSharedPointer<QRingBuffer> ringBuffer;
     qint64 currentPosition;
@@ -133,11 +133,11 @@ class QNonContiguousByteDeviceIoDeviceImpl : public QNonContiguousByteDevice
 public:
     QNonContiguousByteDeviceIoDeviceImpl(QIODevice *d);
     ~QNonContiguousByteDeviceIoDeviceImpl();
-    const char* readPointer(qint64 maximumLength, qint64 &len);
-    bool advanceReadPointer(qint64 amount);
-    bool atEnd();
-    bool reset();
-    qint64 size();
+    const char* readPointer(qint64 maximumLength, qint64 &len) Q_DECL_OVERRIDE;
+    bool advanceReadPointer(qint64 amount) Q_DECL_OVERRIDE;
+    bool atEnd() Q_DECL_OVERRIDE;
+    bool reset() Q_DECL_OVERRIDE;
+    qint64 size() Q_DECL_OVERRIDE;
 protected:
     QIODevice* device;
     QByteArray* currentReadBuffer;
@@ -155,11 +155,11 @@ class QNonContiguousByteDeviceBufferImpl : public QNonContiguousByteDevice
 public:
     QNonContiguousByteDeviceBufferImpl(QBuffer *b);
     ~QNonContiguousByteDeviceBufferImpl();
-    const char* readPointer(qint64 maximumLength, qint64 &len);
-    bool advanceReadPointer(qint64 amount);
-    bool atEnd();
-    bool reset();
-    qint64 size();
+    const char* readPointer(qint64 maximumLength, qint64 &len) Q_DECL_OVERRIDE;
+    bool advanceReadPointer(qint64 amount) Q_DECL_OVERRIDE;
+    bool atEnd() Q_DECL_OVERRIDE;
+    bool reset() Q_DECL_OVERRIDE;
+    qint64 size() Q_DECL_OVERRIDE;
 protected:
     QBuffer* buffer;
     QByteArray byteArray;
@@ -172,13 +172,13 @@ class QByteDeviceWrappingIoDevice : public QIODevice
 public:
     QByteDeviceWrappingIoDevice (QNonContiguousByteDevice *bd);
     ~QByteDeviceWrappingIoDevice ();
-    virtual bool isSequential () const;
-    virtual bool atEnd () const;
-    virtual bool reset ();
-    virtual qint64 size () const;
+    virtual bool isSequential () const Q_DECL_OVERRIDE;
+    virtual bool atEnd () const Q_DECL_OVERRIDE;
+    virtual bool reset () Q_DECL_OVERRIDE;
+    virtual qint64 size () const Q_DECL_OVERRIDE;
 protected:
-     virtual qint64 readData ( char * data, qint64 maxSize );
-     virtual qint64 writeData ( const char * data, qint64 maxSize );
+     virtual qint64 readData ( char * data, qint64 maxSize ) Q_DECL_OVERRIDE;
+     virtual qint64 writeData ( const char * data, qint64 maxSize ) Q_DECL_OVERRIDE;
 
      QNonContiguousByteDevice *byteDevice;
 };
diff --git a/src/corelib/io/qprocess.h b/src/corelib/io/qprocess.h
index 8d90177c8b..af3db4ecf6 100644
--- a/src/corelib/io/qprocess.h
+++ b/src/corelib/io/qprocess.h
@@ -182,8 +182,8 @@ public:
     qint64 processId() const;
 
     bool waitForStarted(int msecs = 30000);
-    bool waitForReadyRead(int msecs = 30000);
-    bool waitForBytesWritten(int msecs = 30000);
+    bool waitForReadyRead(int msecs = 30000) Q_DECL_OVERRIDE;
+    bool waitForBytesWritten(int msecs = 30000) Q_DECL_OVERRIDE;
     bool waitForFinished(int msecs = 30000);
 
     QByteArray readAllStandardOutput();
@@ -193,12 +193,12 @@ public:
     QProcess::ExitStatus exitStatus() const;
 
     // QIODevice
-    qint64 bytesAvailable() const;
-    qint64 bytesToWrite() const;
-    bool isSequential() const;
-    bool canReadLine() const;
-    void close();
-    bool atEnd() const;
+    qint64 bytesAvailable() const Q_DECL_OVERRIDE;
+    qint64 bytesToWrite() const Q_DECL_OVERRIDE;
+    bool isSequential() const Q_DECL_OVERRIDE;
+    bool canReadLine() const Q_DECL_OVERRIDE;
+    void close() Q_DECL_OVERRIDE;
+    bool atEnd() const Q_DECL_OVERRIDE;
 
     static int execute(const QString &program, const QStringList &arguments);
     static int execute(const QString &command);
@@ -254,8 +254,8 @@ protected:
     virtual void setupChildProcess();
 
     // QIODevice
-    qint64 readData(char *data, qint64 maxlen);
-    qint64 writeData(const char *data, qint64 len);
+    qint64 readData(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    qint64 writeData(const char *data, qint64 len) Q_DECL_OVERRIDE;
 
 private:
     Q_DECLARE_PRIVATE(QProcess)
diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index cc154cfbc5..cfee5f1d46 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -165,7 +165,7 @@ public:
     QProcessManager();
     ~QProcessManager();
 
-    void run();
+    void run() Q_DECL_OVERRIDE;
     void catchDeadChildren();
     void add(pid_t pid, QProcess *process);
     void remove(QProcess *process);
diff --git a/src/corelib/io/qresource.cpp b/src/corelib/io/qresource.cpp
index 9eca0ab8dc..d9b51cd288 100644
--- a/src/corelib/io/qresource.cpp
+++ b/src/corelib/io/qresource.cpp
@@ -873,8 +873,8 @@ public:
     inline QDynamicBufferResourceRoot(const QString &_root) : root(_root), buffer(0) { }
     inline ~QDynamicBufferResourceRoot() { }
     inline const uchar *mappingBuffer() const { return buffer; }
-    virtual QString mappingRoot() const { return root; }
-    virtual ResourceRootType type() const { return Resource_Buffer; }
+    virtual QString mappingRoot() const Q_DECL_OVERRIDE { return root; }
+    virtual ResourceRootType type() const Q_DECL_OVERRIDE { return Resource_Buffer; }
 
     // size == -1 means "unknown"
     bool registerSelf(const uchar *b, int size)
@@ -960,7 +960,7 @@ public:
         }
     }
     QString mappingFile() const { return fileName; }
-    virtual ResourceRootType type() const { return Resource_File; }
+    virtual ResourceRootType type() const Q_DECL_OVERRIDE { return Resource_File; }
 
     bool registerSelf(const QString &f) {
         bool fromMM = false;
diff --git a/src/corelib/io/qresource_iterator_p.h b/src/corelib/io/qresource_iterator_p.h
index 451773ec63..dce298fb44 100644
--- a/src/corelib/io/qresource_iterator_p.h
+++ b/src/corelib/io/qresource_iterator_p.h
@@ -57,10 +57,10 @@ public:
     QResourceFileEngineIterator(QDir::Filters filters, const QStringList &filterNames);
     ~QResourceFileEngineIterator();
 
-    QString next();
-    bool hasNext() const;
+    QString next() Q_DECL_OVERRIDE;
+    bool hasNext() const Q_DECL_OVERRIDE;
 
-    QString currentFileName() const;
+    QString currentFileName() const Q_DECL_OVERRIDE;
 
 private:
     mutable QStringList entries;
diff --git a/src/corelib/io/qresource_p.h b/src/corelib/io/qresource_p.h
index 030d1587e5..11b2836215 100644
--- a/src/corelib/io/qresource_p.h
+++ b/src/corelib/io/qresource_p.h
@@ -58,52 +58,52 @@ public:
     explicit QResourceFileEngine(const QString &path);
     ~QResourceFileEngine();
 
-    virtual void setFileName(const QString &file);
+    virtual void setFileName(const QString &file) Q_DECL_OVERRIDE;
 
-    virtual bool open(QIODevice::OpenMode flags) ;
-    virtual bool close();
-    virtual bool flush();
-    virtual qint64 size() const;
-    virtual qint64 pos() const;
+    virtual bool open(QIODevice::OpenMode flags) Q_DECL_OVERRIDE ;
+    virtual bool close() Q_DECL_OVERRIDE;
+    virtual bool flush() Q_DECL_OVERRIDE;
+    virtual qint64 size() const Q_DECL_OVERRIDE;
+    virtual qint64 pos() const Q_DECL_OVERRIDE;
     virtual bool atEnd() const;
-    virtual bool seek(qint64);
-    virtual qint64 read(char *data, qint64 maxlen);
-    virtual qint64 write(const char *data, qint64 len);
+    virtual bool seek(qint64) Q_DECL_OVERRIDE;
+    virtual qint64 read(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
+    virtual qint64 write(const char *data, qint64 len) Q_DECL_OVERRIDE;
 
-    virtual bool remove();
-    virtual bool copy(const QString &newName);
-    virtual bool rename(const QString &newName);
-    virtual bool link(const QString &newName);
+    virtual bool remove() Q_DECL_OVERRIDE;
+    virtual bool copy(const QString &newName) Q_DECL_OVERRIDE;
+    virtual bool rename(const QString &newName) Q_DECL_OVERRIDE;
+    virtual bool link(const QString &newName) Q_DECL_OVERRIDE;
 
-    virtual bool isSequential() const;
+    virtual bool isSequential() const Q_DECL_OVERRIDE;
 
-    virtual bool isRelativePath() const;
+    virtual bool isRelativePath() const Q_DECL_OVERRIDE;
 
-    virtual bool mkdir(const QString &dirName, bool createParentDirectories) const;
-    virtual bool rmdir(const QString &dirName, bool recurseParentDirectories) const;
+    virtual bool mkdir(const QString &dirName, bool createParentDirectories) const Q_DECL_OVERRIDE;
+    virtual bool rmdir(const QString &dirName, bool recurseParentDirectories) const Q_DECL_OVERRIDE;
 
-    virtual bool setSize(qint64 size);
+    virtual bool setSize(qint64 size) Q_DECL_OVERRIDE;
 
-    virtual QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const;
+    virtual QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const Q_DECL_OVERRIDE;
 
-    virtual bool caseSensitive() const;
+    virtual bool caseSensitive() const Q_DECL_OVERRIDE;
 
-    virtual FileFlags fileFlags(FileFlags type) const;
+    virtual FileFlags fileFlags(FileFlags type) const Q_DECL_OVERRIDE;
 
-    virtual bool setPermissions(uint perms);
+    virtual bool setPermissions(uint perms) Q_DECL_OVERRIDE;
 
-    virtual QString fileName(QAbstractFileEngine::FileName file) const;
+    virtual QString fileName(QAbstractFileEngine::FileName file) const Q_DECL_OVERRIDE;
 
-    virtual uint ownerId(FileOwner) const;
-    virtual QString owner(FileOwner) const;
+    virtual uint ownerId(FileOwner) const Q_DECL_OVERRIDE;
+    virtual QString owner(FileOwner) const Q_DECL_OVERRIDE;
 
-    virtual QDateTime fileTime(FileTime time) const;
+    virtual QDateTime fileTime(FileTime time) const Q_DECL_OVERRIDE;
 
-    virtual Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames);
-    virtual Iterator *endEntryList();
+    virtual Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames) Q_DECL_OVERRIDE;
+    virtual Iterator *endEntryList() Q_DECL_OVERRIDE;
 
-    bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0);
-    bool supportsExtension(Extension extension) const;
+    bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0) Q_DECL_OVERRIDE;
+    bool supportsExtension(Extension extension) const Q_DECL_OVERRIDE;
 };
 
 QT_END_NAMESPACE
diff --git a/src/corelib/io/qsettings.h b/src/corelib/io/qsettings.h
index 4986c06896..1ce2865c63 100644
--- a/src/corelib/io/qsettings.h
+++ b/src/corelib/io/qsettings.h
@@ -177,7 +177,7 @@ public:
 
 protected:
 #ifndef QT_NO_QOBJECT
-    bool event(QEvent *event);
+    bool event(QEvent *event) Q_DECL_OVERRIDE;
 #endif
 
 private:
diff --git a/src/corelib/io/qsettings_p.h b/src/corelib/io/qsettings_p.h
index 715f13530a..0525fab77a 100644
--- a/src/corelib/io/qsettings_p.h
+++ b/src/corelib/io/qsettings_p.h
@@ -270,17 +270,17 @@ public:
     QConfFileSettingsPrivate(const QString &fileName, QSettings::Format format);
     ~QConfFileSettingsPrivate();
 
-    void remove(const QString &key);
-    void set(const QString &key, const QVariant &value);
-    bool get(const QString &key, QVariant *value) const;
+    void remove(const QString &key) Q_DECL_OVERRIDE;
+    void set(const QString &key, const QVariant &value) Q_DECL_OVERRIDE;
+    bool get(const QString &key, QVariant *value) const Q_DECL_OVERRIDE;
 
-    QStringList children(const QString &prefix, ChildSpec spec) const;
+    QStringList children(const QString &prefix, ChildSpec spec) const Q_DECL_OVERRIDE;
 
-    void clear();
-    void sync();
-    void flush();
-    bool isWritable() const;
-    QString fileName() const;
+    void clear() Q_DECL_OVERRIDE;
+    void sync() Q_DECL_OVERRIDE;
+    void flush() Q_DECL_OVERRIDE;
+    bool isWritable() const Q_DECL_OVERRIDE;
+    QString fileName() const Q_DECL_OVERRIDE;
 
     bool readIniFile(const QByteArray &data, UnparsedSettingsMap *unparsedIniSections);
     static bool readIniSection(const QSettingsKey &section, const QByteArray &data,
diff --git a/src/corelib/io/qtemporaryfile.h b/src/corelib/io/qtemporaryfile.h
index 908cc231af..f21f87fd21 100644
--- a/src/corelib/io/qtemporaryfile.h
+++ b/src/corelib/io/qtemporaryfile.h
@@ -71,7 +71,7 @@ public:
     // ### Hides open(flags)
     bool open() { return open(QIODevice::ReadWrite); }
 
-    QString fileName() const;
+    QString fileName() const Q_DECL_OVERRIDE;
     QString fileTemplate() const;
     void setFileTemplate(const QString &name);
 #if QT_DEPRECATED_SINCE(5,1)
@@ -85,7 +85,7 @@ public:
     static QTemporaryFile *createNativeFile(QFile &file);
 
 protected:
-    bool open(OpenMode flags);
+    bool open(OpenMode flags) Q_DECL_OVERRIDE;
 
 private:
     friend class QFile;