Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-1: (27 commits)
  Work around a compiler bug on 64-bit.
  Fix handling of braces/no-braces in QUrl::host / setHost.
  Changes (and minor corrections) to QByteArray documentation.
  QtWebKit: Update tag files to match the same content on qtwebkit.git
  QtWebKit: Downstream patch 2 fixing a crash on MSVC 64bit.
  QtWebKit: Downstream patch 1 fixing a crash on MSVC 64bit.
  uic: Fix compile breakage in case QT_NO_QT3_SUPPORT.
  uic: Improve messages.
  Tools (uic/rcc): Improve warning messages.
  QDir: Removed checks for existance of fileEngine
  QDir and QFileInfo shouldn't lose properties when detaching
  Another bug-o introduced in fixing QDirPrivate refactoring
  Reverting QDir::detach introduced earlier
  QFileInfo: Prepare for engine-less implementation
  Removed QFileInfoPrivate::initFileEngine
  Simplify QDir::cd
  QDir::makeAbsolute could self-destruct on failure
  QDir::operator= simplification
  QDirPrivate refactoring
  QDirPrivate refactoring
  ...

25 files changed, 657 insertions, 510 deletions

diff --git a/configure b/configure
index cb7d4f0..1ad0181 100755
--- a/configure
+++ b/configure
@@ -7181,6 +7181,7 @@ if [ "$CFG_WEBKIT" = "yes" ]; then
     # The reason we set CFG_WEBKIT, is such that the printed overview of what will be enabled, shows correctly.
     CFG_WEBKIT="yes"
 else
+    rm -f "$outpath/mkspecs/modules/qt_webkit_version.pri"
     CFG_WEBKIT="no"
     QCONFIG_FLAGS="$QCONFIG_FLAGS QT_NO_WEBKIT"
 fi
diff --git a/src/3rdparty/webkit/.tag b/src/3rdparty/webkit/.tag
index d31a2b4..1148320 100644
--- a/src/3rdparty/webkit/.tag
+++ b/src/3rdparty/webkit/.tag
@@ -1 +1 @@
-72b1c38579ca1fdb3f242e29cd16e5bfb4925813
+460b651cbe4f6994b492ff08614e57b0e31a24c8
diff --git a/src/3rdparty/webkit/JavaScriptCore/ChangeLog b/src/3rdparty/webkit/JavaScriptCore/ChangeLog
index c09ad79..2be6f5a 100644
--- a/src/3rdparty/webkit/JavaScriptCore/ChangeLog
+++ b/src/3rdparty/webkit/JavaScriptCore/ChangeLog
@@ -1,3 +1,15 @@
+2010-07-08  Andreas Kling  <andreas.kling@nokia.com>
+
+        Reviewed by Oliver Hunt.
+
+        Interpreter: Crash in op_load_varargs on 64-bit
+        https://bugs.webkit.org/show_bug.cgi?id=41795
+
+        Added missing cast of argCount to int32_t in op_load_varargs.
+
+        * interpreter/Interpreter.cpp:
+        (JSC::Interpreter::privateExecute):
+
 2010-07-02  Peter Varga  <pvarga@inf.u-szeged.hu>
 
         Reviewed by Oliver Hunt.
diff --git a/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.cpp b/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.cpp
index 73efc0d..a56040c 100644
--- a/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.cpp
+++ b/src/3rdparty/webkit/JavaScriptCore/interpreter/Interpreter.cpp
@@ -3465,17 +3465,17 @@ skip_id_custom_self:
                 goto vm_throw;
             }
             ASSERT(!callFrame->callee()->isHostFunction());
-            uint32_t expectedParams = callFrame->callee()->jsExecutable()->parameterCount();
-            uint32_t inplaceArgs = min(argCount, expectedParams);
-            uint32_t i = 0;
+            int32_t expectedParams = callFrame->callee()->jsExecutable()->parameterCount();
+            int32_t inplaceArgs = min(static_cast<int32_t>(argCount), expectedParams);
+            int32_t i = 0;
             Register* argStore = callFrame->registers() + argsOffset;
 
             // First step is to copy the "expected" parameters from their normal location relative to the callframe
             for (; i < inplaceArgs; i++)
                 argStore[i] = callFrame->registers()[i - RegisterFile::CallFrameHeaderSize - expectedParams];
             // Then we copy any additional arguments that may be further up the stack ('-1' to account for 'this')
-            for (; i < argCount; i++)
-                argStore[i] = callFrame->registers()[i - RegisterFile::CallFrameHeaderSize - expectedParams - argCount - 1];
+            for (; i < static_cast<int32_t>(argCount); i++)
+                argStore[i] = callFrame->registers()[i - RegisterFile::CallFrameHeaderSize - expectedParams - static_cast<int32_t>(argCount) - 1];
         } else if (!arguments.isUndefinedOrNull()) {
             if (!arguments.isObject()) {
                 exceptionValue = createInvalidParamError(callFrame, "Function.prototype.apply", arguments, vPC - callFrame->codeBlock()->instructions().begin(), callFrame->codeBlock());
diff --git a/src/3rdparty/webkit/VERSION b/src/3rdparty/webkit/VERSION
index 62aa8ce..aff3f2a 100644
--- a/src/3rdparty/webkit/VERSION
+++ b/src/3rdparty/webkit/VERSION
@@ -4,4 +4,4 @@ This is a snapshot of the Qt port of WebKit from
 
 and has the sha1 checksum
 
-        72b1c38579ca1fdb3f242e29cd16e5bfb4925813
+        460b651cbe4f6994b492ff08614e57b0e31a24c8
diff --git a/src/corelib/io/qdir.cpp b/src/corelib/io/qdir.cpp
index e54d95e..fcd17f7 100644
--- a/src/corelib/io/qdir.cpp
+++ b/src/corelib/io/qdir.cpp
@@ -82,20 +82,69 @@ static QString driveSpec(const QString &path)
 
 //************* QDirPrivate
 class QDirPrivate
+    : public QSharedData
 {
-    friend struct QScopedPointerDeleter<QDirPrivate>;
-
 public:
-    QDirPrivate(const QDir *copy = 0);
-    ~QDirPrivate();
-
-    void updateFileLists() const;
-    void sortFileList(QDir::SortFlags, QFileInfoList &, QStringList *, QFileInfoList *) const;
+    QDirPrivate(const QString &path,
+            const QStringList &nameFilters_ = QStringList(),
+            QDir::SortFlags sort_ = QDir::SortFlags(QDir::Name | QDir::IgnoreCase),
+            QDir::Filters filters_ = QDir::AllEntries)
+        : QSharedData()
+        , nameFilters(nameFilters_)
+        , sort(sort_)
+        , filters(filters_)
+#ifdef QT3_SUPPORT
+        , filterSepChar(0)
+        , matchAllDirs(false)
+#endif
+        , fileListsInitialized(false)
+    {
+        setPath(path.isEmpty() ? QString::fromLatin1(".") : path);
+
+        bool empty = nameFilters.isEmpty();
+        if (!empty) {
+            empty = true;
+            for (int i = 0; i < nameFilters.size(); ++i) {
+                if (!nameFilters.at(i).isEmpty()) {
+                    empty = false;
+                    break;
+                }
+            }
+        }
+        if (empty)
+            nameFilters = QStringList(QString::fromLatin1("*"));
+    }
 
+    QDirPrivate(const QDirPrivate &copy)
+        : QSharedData(copy)
+        , path(copy.path)
+        , nameFilters(copy.nameFilters)
+        , sort(copy.sort)
+        , filters(copy.filters)
 #ifdef QT3_SUPPORT
-    QChar filterSepChar;
-    bool matchAllDirs;
+        , filterSepChar(copy.filterSepChar)
+        , matchAllDirs(copy.matchAllDirs)
 #endif
+        , fileListsInitialized(false)
+    {
+    }
+
+    bool exists() const
+    {
+        const QAbstractFileEngine::FileFlags info =
+            fileEngine->fileFlags(QAbstractFileEngine::DirectoryType
+                                           | QAbstractFileEngine::ExistsFlag
+                                           | QAbstractFileEngine::Refresh);
+        if (!(info & QAbstractFileEngine::DirectoryType))
+            return false;
+        return info & QAbstractFileEngine::ExistsFlag;
+    }
+
+    void initFileEngine();
+    void initFileLists() const;
+
+    static void sortFileList(QDir::SortFlags, QFileInfoList &, QStringList *, QFileInfoList *);
+
     static inline QChar getFilterSepChar(const QString &nameFilter)
     {
         QChar sep(QLatin1Char(';'));
@@ -104,7 +153,9 @@ public:
             sep = QChar(QLatin1Char(' '));
         return sep;
     }
-    static inline QStringList splitFilters(const QString &nameFilter, QChar sep = 0) {
+
+    static inline QStringList splitFilters(const QString &nameFilter, QChar sep = 0)
+    {
         if (sep == 0)
             sep = getFilterSepChar(nameFilter);
         QStringList ret = nameFilter.split(sep);
@@ -113,80 +164,46 @@ public:
         return ret;
     }
 
-    struct Data {
-        inline Data()
-            : ref(1), fileEngine(0), listsDirty(1)
-        {}
-        inline Data(const Data &copy)
-            : ref(1), path(copy.path), nameFilters(copy.nameFilters), sort(copy.sort),
-              filters(copy.filters), fileEngine(0), listsDirty(1)
-        {}
-        inline ~Data()
-        { delete fileEngine; }
-
-        inline void clear() {
-            listsDirty = 1;
-            files.clear();
-            fileInfos.clear();
-        }
-        mutable QAtomicInt ref;
-
-        QString path;
-        QStringList nameFilters;
-        QDir::SortFlags sort;
-        QDir::Filters filters;
-
-        mutable QAbstractFileEngine *fileEngine;
-
-        mutable uint listsDirty : 1;
-        mutable QStringList files;
-        mutable QFileInfoList fileInfos;
-    } *data;
-    inline void setPath(const QString &p)
+    inline void setPath(QString p)
     {
-        detach(false);
-        QString path = p;
-        if ((path.endsWith(QLatin1Char('/')) || path.endsWith(QLatin1Char('\\')))
-                && path.length() > 1) {
+        if ((p.endsWith(QLatin1Char('/')) || p.endsWith(QLatin1Char('\\')))
+                && p.length() > 1) {
 #if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
-            if (!(path.length() == 3 && path.at(1) == QLatin1Char(':')))
+            if (!(p.length() == 3 && p.at(1) == QLatin1Char(':')))
 #endif
-                path.truncate(path.length() - 1);
+                p.truncate(p.length() - 1);
         }
 
-        delete data->fileEngine;
-        data->fileEngine = QAbstractFileEngine::create(path);
+        path = p;
+        initFileEngine();
 
         // set the path to be the qt friendly version so then we can operate on it using just /
-        data->path = data->fileEngine->fileName(QAbstractFileEngine::DefaultName);
-        data->clear();
+        path = fileEngine->fileName(QAbstractFileEngine::DefaultName);
+        clearFileLists();
     }
-    inline void reset() {
-        detach();
-        data->clear();
+
+    inline void clearFileLists() {
+        fileListsInitialized = false;
+        files.clear();
+        fileInfos.clear();
     }
-    void detach(bool createFileEngine = true);
-};
 
-QDirPrivate::QDirPrivate(const QDir *copy)
+    QString path;
+    QStringList nameFilters;
+    QDir::SortFlags sort;
+    QDir::Filters filters;
+
 #ifdef QT3_SUPPORT
-    : filterSepChar(0), matchAllDirs(false)
+    QChar filterSepChar;
+    bool matchAllDirs;
 #endif
-{
-    if (copy) {
-        copy->d_func()->data->ref.ref();
-        data = copy->d_func()->data;
-    } else {
-        data = new QDirPrivate::Data;
-    }
-}
 
-QDirPrivate::~QDirPrivate()
-{
-    if (!data->ref.deref())
-        delete data;
-    data = 0;
-}
+    QScopedPointer<QAbstractFileEngine> fileEngine;
+
+    mutable bool fileListsInitialized;
+    mutable QStringList files;
+    mutable QFileInfoList fileInfos;
+};
 
 /* For sorting */
 struct QDirSortItem
@@ -269,7 +286,7 @@ bool QDirSortItemComparator::operator()(const QDirSortItem &n1, const QDirSortIt
 }
 
 inline void QDirPrivate::sortFileList(QDir::SortFlags sort, QFileInfoList &l,
-                                      QStringList *names, QFileInfoList *infos) const
+                                      QStringList *names, QFileInfoList *infos)
 {
     // names and infos are always empty lists or 0 here
     int n = l.size();
@@ -299,28 +316,23 @@ inline void QDirPrivate::sortFileList(QDir::SortFlags sort, QFileInfoList &l,
     }
 }
 
-inline void QDirPrivate::updateFileLists() const
+inline void QDirPrivate::initFileLists() const
 {
-    if (data->listsDirty) {
+    if (!fileListsInitialized) {
         QFileInfoList l;
-        QDirIterator it(data->path, data->nameFilters, data->filters);
+        QDirIterator it(path, nameFilters, filters);
         while (it.hasNext()) {
             it.next();
             l.append(it.fileInfo());
         }
-        sortFileList(data->sort, l, &data->files, &data->fileInfos);
-        data->listsDirty = 0;
+        sortFileList(sort, l, &files, &fileInfos);
+        fileListsInitialized = true;
     }
 }
 
-void QDirPrivate::detach(bool createFileEngine)
+inline void QDirPrivate::initFileEngine()
 {
-    qAtomicDetach(data);
-    if (createFileEngine) {
-        QAbstractFileEngine *newFileEngine = QAbstractFileEngine::create(data->path);
-        delete data->fileEngine;
-        data->fileEngine = newFileEngine;
-    }
+    fileEngine.reset(QAbstractFileEngine::create(path));
 }
 
 /*!
@@ -504,13 +516,8 @@ void QDirPrivate::detach(bool createFileEngine)
 
     \sa currentPath()
 */
-QDir::QDir(const QString &path) : d_ptr(new QDirPrivate)
+QDir::QDir(const QString &path) : d_ptr(new QDirPrivate(path))
 {
-    Q_D(QDir);
-    d->setPath(path.isEmpty() ? QString::fromLatin1(".") : path);
-    d->data->nameFilters = QStringList(QString::fromLatin1("*"));
-    d->data->filters = AllEntries;
-    d->data->sort = SortFlags(Name | IgnoreCase);
 }
 
 /*!
@@ -532,25 +539,9 @@ QDir::QDir(const QString &path) : d_ptr(new QDirPrivate)
     \sa exists(), setPath(), setNameFilter(), setFilter(), setSorting()
 */
 QDir::QDir(const QString &path, const QString &nameFilter,
-           SortFlags sort, Filters filters) : d_ptr(new QDirPrivate)
-{
-    Q_D(QDir);
-    d->setPath(path.isEmpty() ? QString::fromLatin1(".") : path);
-    d->data->nameFilters = QDir::nameFiltersFromString(nameFilter);
-    bool empty = d->data->nameFilters.isEmpty();
-    if (!empty) {
-        empty = true;
-        for (int i = 0; i < d->data->nameFilters.size(); ++i) {
-            if (!d->data->nameFilters.at(i).isEmpty()) {
-                empty = false;
-                break;
-            }
-        }
-    }
-    if (empty)
-        d->data->nameFilters = QStringList(QString::fromLatin1("*"));
-    d->data->sort = sort;
-    d->data->filters = filters;
+           SortFlags sort, Filters filters)
+    : d_ptr(new QDirPrivate(path, QDir::nameFiltersFromString(nameFilter), sort, filters))
+{
 }
 
 /*!
@@ -559,7 +550,8 @@ QDir::QDir(const QString &path, const QString &nameFilter,
 
     \sa operator=()
 */
-QDir::QDir(const QDir &dir) : d_ptr(new QDirPrivate(&dir))
+QDir::QDir(const QDir &dir)
+    : d_ptr(dir.d_ptr)
 {
 }
 
@@ -589,8 +581,7 @@ QDir::~QDir()
 */
 void QDir::setPath(const QString &path)
 {
-    Q_D(QDir);
-    d->setPath(path);
+    d_ptr->setPath(path);
 }
 
 /*!
@@ -605,8 +596,8 @@ void QDir::setPath(const QString &path)
 */
 QString QDir::path() const
 {
-    Q_D(const QDir);
-    return d->data->path;
+    const QDirPrivate* d = d_ptr.constData();
+    return d->path;
 }
 
 /*!
@@ -619,8 +610,8 @@ QString QDir::path() const
 */
 QString QDir::absolutePath() const
 {
-    Q_D(const QDir);
-    QString ret = d->data->path;
+    const QDirPrivate* d = d_ptr.constData();
+    QString ret = d->path;
     if (QDir::isRelativePath(ret))
         ret = absoluteFilePath(QString::fromLatin1(""));
     return cleanPath(ret);
@@ -644,11 +635,7 @@ QString QDir::absolutePath() const
 */
 QString QDir::canonicalPath() const
 {
-    Q_D(const QDir);
-
-    if (!d->data->fileEngine)
-        return QLatin1String("");
-    return cleanPath(d->data->fileEngine->fileName(QAbstractFileEngine::CanonicalName));
+    return cleanPath(d_ptr->fileEngine->fileName(QAbstractFileEngine::CanonicalName));
 }
 
 /*!
@@ -664,11 +651,11 @@ QString QDir::canonicalPath() const
 */
 QString QDir::dirName() const
 {
-    Q_D(const QDir);
-    int pos = d->data->path.lastIndexOf(QLatin1Char('/'));
+    const QDirPrivate* d = d_ptr.constData();
+    int pos = d->path.lastIndexOf(QLatin1Char('/'));
     if (pos == -1)
-        return d->data->path;
-    return d->data->path.mid(pos + 1);
+        return d->path;
+    return d->path.mid(pos + 1);
 }
 
 /*!
@@ -682,11 +669,11 @@ QString QDir::dirName() const
 */
 QString QDir::filePath(const QString &fileName) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
     if (isAbsolutePath(fileName))
         return QString(fileName);
 
-    QString ret = d->data->path;
+    QString ret = d->path;
     if (!fileName.isEmpty()) {
         if (!ret.isEmpty() && ret[(int)ret.length()-1] != QLatin1Char('/') && fileName[0] != QLatin1Char('/'))
             ret += QLatin1Char('/');
@@ -705,21 +692,19 @@ QString QDir::filePath(const QString &fileName) const
 */
 QString QDir::absoluteFilePath(const QString &fileName) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
     if (isAbsolutePath(fileName))
         return fileName;
-    if (!d->data->fileEngine)
-        return fileName;
 
     QString ret;
 #ifndef QT_NO_FSFILEENGINE
-    if (isRelativePath(d->data->path)) //get pwd
+    if (isRelativePath(d->path)) //get pwd
         ret = QFSFileEngine::currentPath(fileName);
 #endif
-    if (!d->data->path.isEmpty() && d->data->path != QLatin1String(".")) {
+    if (!d->path.isEmpty() && d->path != QLatin1String(".")) {
         if (!ret.isEmpty() && !ret.endsWith(QLatin1Char('/')))
             ret += QLatin1Char('/');
-        ret += d->data->path;
+        ret += d->path;
     }
     if (!fileName.isEmpty()) {
         if (!ret.isEmpty() && !ret.endsWith(QLatin1Char('/')))
@@ -867,11 +852,12 @@ QString QDir::fromNativeSeparators(const QString &pathName)
 */
 bool QDir::cd(const QString &dirName)
 {
-    Q_D(QDir);
+    // Don't detach just yet.
+    const QDirPrivate * const d = d_ptr.constData();
 
     if (dirName.isEmpty() || dirName == QLatin1String("."))
         return true;
-    QString newPath = d->data->path;
+    QString newPath = d->path;
     if (isAbsolutePath(dirName)) {
         newPath = cleanPath(dirName);
     } else {
@@ -884,7 +870,7 @@ bool QDir::cd(const QString &dirName)
 
         newPath += dirName;
         if (dirName.indexOf(QLatin1Char('/')) >= 0
-            || d->data->path == QLatin1String(".")
+            || d->path == QLatin1String(".")
             || dirName == QLatin1String("..")) {
             newPath = cleanPath(newPath);
             /*
@@ -901,12 +887,13 @@ bool QDir::cd(const QString &dirName)
         }
     }
 
-    QDir dir(*this);
-    dir.setPath(newPath);
-    if (!dir.exists())
+    QScopedPointer<QDirPrivate> dir(new QDirPrivate(*d_ptr.constData()));
+    dir->setPath(newPath);
+
+    if (!dir->exists())
         return false;
 
-    *this = dir;
+    d_ptr = dir.take();
     return true;
 }
 
@@ -930,9 +917,8 @@ bool QDir::cdUp()
 */
 QStringList QDir::nameFilters() const
 {
-    Q_D(const QDir);
-
-    return d->data->nameFilters;
+    const QDirPrivate* d = d_ptr.constData();
+    return d->nameFilters;
 }
 
 /*!
@@ -952,10 +938,11 @@ QStringList QDir::nameFilters() const
 */
 void QDir::setNameFilters(const QStringList &nameFilters)
 {
-    Q_D(QDir);
+    QDirPrivate* d = d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 
-    d->reset();
-    d->data->nameFilters = nameFilters;
+    d->nameFilters = nameFilters;
 }
 
 /*!
@@ -1058,9 +1045,8 @@ QStringList QDir::searchPaths(const QString &prefix)
 */
 QDir::Filters QDir::filter() const
 {
-    Q_D(const QDir);
-
-    return d->data->filters;
+    const QDirPrivate* d = d_ptr.constData();
+    return d->filters;
 }
 
 /*!
@@ -1141,10 +1127,11 @@ QDir::Filters QDir::filter() const
 */
 void QDir::setFilter(Filters filters)
 {
-    Q_D(QDir);
+    QDirPrivate* d = d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 
-    d->reset();
-    d->data->filters = filters;
+    d->filters = filters;
 }
 
 /*!
@@ -1154,9 +1141,8 @@ void QDir::setFilter(Filters filters)
 */
 QDir::SortFlags QDir::sorting() const
 {
-    Q_D(const QDir);
-
-    return d->data->sort;
+    const QDirPrivate* d = d_ptr.constData();
+    return d->sort;
 }
 
 /*!
@@ -1199,10 +1185,11 @@ QDir::SortFlags QDir::sorting() const
 */
 void QDir::setSorting(SortFlags sort)
 {
-    Q_D(QDir);
+    QDirPrivate* d = d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 
-    d->reset();
-    d->data->sort = sort;
+    d->sort = sort;
 }
 
 /*!
@@ -1214,10 +1201,9 @@ void QDir::setSorting(SortFlags sort)
 */
 uint QDir::count() const
 {
-    Q_D(const QDir);
-
-    d->updateFileLists();
-    return d->data->files.count();
+    const QDirPrivate* d = d_ptr.constData();
+    d->initFileLists();
+    return d->files.count();
 }
 
 /*!
@@ -1229,10 +1215,9 @@ uint QDir::count() const
 */
 QString QDir::operator[](int pos) const
 {
-    Q_D(const QDir);
-
-    d->updateFileLists();
-    return d->data->files[pos];
+    const QDirPrivate* d = d_ptr.constData();
+    d->initFileLists();
+    return d->files[pos];
 }
 
 /*!
@@ -1256,9 +1241,8 @@ QString QDir::operator[](int pos) const
 */
 QStringList QDir::entryList(Filters filters, SortFlags sort) const
 {
-    Q_D(const QDir);
-
-    return entryList(d->data->nameFilters, filters, sort);
+    const QDirPrivate* d = d_ptr.constData();
+    return entryList(d->nameFilters, filters, sort);
 }
 
 
@@ -1280,9 +1264,8 @@ QStringList QDir::entryList(Filters filters, SortFlags sort) const
 */
 QFileInfoList QDir::entryInfoList(Filters filters, SortFlags sort) const
 {
-    Q_D(const QDir);
-
-    return entryInfoList(d->data->nameFilters, filters, sort);
+    const QDirPrivate* d = d_ptr.constData();
+    return entryInfoList(d->nameFilters, filters, sort);
 }
 
 /*!
@@ -1304,24 +1287,24 @@ QFileInfoList QDir::entryInfoList(Filters filters, SortFlags sort) const
 QStringList QDir::entryList(const QStringList &nameFilters, Filters filters,
                             SortFlags sort) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (filters == NoFilter)
-        filters = d->data->filters;
+        filters = d->filters;
 #ifdef QT3_SUPPORT
     if (d->matchAllDirs)
         filters |= AllDirs;
 #endif
     if (sort == NoSort)
-        sort = d->data->sort;
+        sort = d->sort;
 
-    if (filters == d->data->filters && sort == d->data->sort && nameFilters == d->data->nameFilters) {
-        d->updateFileLists();
-        return d->data->files;
+    if (filters == d->filters && sort == d->sort && nameFilters == d->nameFilters) {
+        d->initFileLists();
+        return d->files;
     }
 
     QFileInfoList l;
-    QDirIterator it(d->data->path, nameFilters, filters);
+    QDirIterator it(d->path, nameFilters, filters);
     while (it.hasNext()) {
         it.next();
         l.append(it.fileInfo());
@@ -1350,24 +1333,24 @@ QStringList QDir::entryList(const QStringList &nameFilters, Filters filters,
 QFileInfoList QDir::entryInfoList(const QStringList &nameFilters, Filters filters,
                                   SortFlags sort) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (filters == NoFilter)
-        filters = d->data->filters;
+        filters = d->filters;
 #ifdef QT3_SUPPORT
     if (d->matchAllDirs)
         filters |= AllDirs;
 #endif
     if (sort == NoSort)
-        sort = d->data->sort;
+        sort = d->sort;
 
-    if (filters == d->data->filters && sort == d->data->sort && nameFilters == d->data->nameFilters) {
-        d->updateFileLists();
-        return d->data->fileInfos;
+    if (filters == d->filters && sort == d->sort && nameFilters == d->nameFilters) {
+        d->initFileLists();
+        return d->fileInfos;
     }
 
     QFileInfoList l;
-    QDirIterator it(d->data->path, nameFilters, filters);
+    QDirIterator it(d->path, nameFilters, filters);
     while (it.hasNext()) {
         it.next();
         l.append(it.fileInfo());
@@ -1386,17 +1369,15 @@ QFileInfoList QDir::entryInfoList(const QStringList &nameFilters, Filters filter
 */
 bool QDir::mkdir(const QString &dirName) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (dirName.isEmpty()) {
         qWarning("QDir::mkdir: Empty or null file name(s)");
         return false;
     }
-    if (!d->data->fileEngine)
-        return false;
 
     QString fn = filePath(dirName);
-    return d->data->fileEngine->mkdir(fn, false);
+    return d->fileEngine->mkdir(fn, false);
 }
 
 /*!
@@ -1410,17 +1391,15 @@ bool QDir::mkdir(const QString &dirName) const
 */
 bool QDir::rmdir(const QString &dirName) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (dirName.isEmpty()) {
         qWarning("QDir::rmdir: Empty or null file name(s)");
         return false;
     }
-    if (!d->data->fileEngine)
-        return false;
 
     QString fn = filePath(dirName);
-    return d->data->fileEngine->rmdir(fn, false);
+    return d->fileEngine->rmdir(fn, false);
 }
 
 /*!
@@ -1435,17 +1414,15 @@ bool QDir::rmdir(const QString &dirName) const
 */
 bool QDir::mkpath(const QString &dirPath) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (dirPath.isEmpty()) {
         qWarning("QDir::mkpath: Empty or null file name(s)");
         return false;
     }
-    if (!d->data->fileEngine)
-        return false;
 
     QString fn = filePath(dirPath);
-    return d->data->fileEngine->mkdir(fn, true);
+    return d->fileEngine->mkdir(fn, true);
 }
 
 /*!
@@ -1461,17 +1438,15 @@ bool QDir::mkpath(const QString &dirPath) const
 */
 bool QDir::rmpath(const QString &dirPath) const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
     if (dirPath.isEmpty()) {
         qWarning("QDir::rmpath: Empty or null file name(s)");
         return false;
     }
-    if (!d->data->fileEngine)
-        return false;
 
     QString fn = filePath(dirPath);
-    return d->data->fileEngine->rmdir(fn, true);
+    return d->fileEngine->rmdir(fn, true);
 }
 
 /*!
@@ -1485,12 +1460,10 @@ bool QDir::rmpath(const QString &dirPath) const
 */
 bool QDir::isReadable() const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
 
-    if (!d->data->fileEngine)
-        return false;
     const QAbstractFileEngine::FileFlags info =
-        d->data->fileEngine->fileFlags(QAbstractFileEngine::DirectoryType
+        d->fileEngine->fileFlags(QAbstractFileEngine::DirectoryType
                                        | QAbstractFileEngine::PermsMask);
     if (!(info & QAbstractFileEngine::DirectoryType))
         return false;
@@ -1510,17 +1483,7 @@ bool QDir::isReadable() const
 */
 bool QDir::exists() const
 {
-    Q_D(const QDir);
-
-    if (!d->data->fileEngine)
-        return false;
-    const QAbstractFileEngine::FileFlags info =
-        d->data->fileEngine->fileFlags(QAbstractFileEngine::DirectoryType
-                                       | QAbstractFileEngine::ExistsFlag
-                                       | QAbstractFileEngine::Refresh);
-    if (!(info & QAbstractFileEngine::DirectoryType))
-        return false;
-    return info & QAbstractFileEngine::ExistsFlag;
+    return d_ptr->exists();
 }
 
 /*!
@@ -1537,11 +1500,7 @@ bool QDir::exists() const
 */
 bool QDir::isRoot() const
 {
-    Q_D(const QDir);
-
-    if (!d->data->fileEngine)
-        return true;
-    return d->data->fileEngine->fileFlags(QAbstractFileEngine::FlagsMask) & QAbstractFileEngine::RootFlag;
+    return d_ptr->fileEngine->fileFlags(QAbstractFileEngine::FlagsMask) & QAbstractFileEngine::RootFlag;
 }
 
 /*!
@@ -1571,11 +1530,7 @@ bool QDir::isRoot() const
 */
 bool QDir::isRelative() const
 {
-    Q_D(const QDir);
-
-    if (!d->data->fileEngine)
-        return false;
-    return d->data->fileEngine->isRelativePath();
+    return d_ptr->fileEngine->isRelativePath();
 }
 
 
@@ -1588,18 +1543,17 @@ bool QDir::isRelative() const
 */
 bool QDir::makeAbsolute() // ### What do the return values signify?
 {
-    Q_D(QDir);
-
-    if (!d->data->fileEngine)
-        return false;
-    QString absolutePath = d->data->fileEngine->fileName(QAbstractFileEngine::AbsoluteName);
+    QString absolutePath = d_ptr.constData()->fileEngine->fileName(QAbstractFileEngine::AbsoluteName);
     if (QDir::isRelativePath(absolutePath))
         return false;
-    d->detach();
-    d->data->path = absolutePath;
-    d->data->fileEngine->setFileName(absolutePath);
-    if (!(d->data->fileEngine->fileFlags(QAbstractFileEngine::TypesMask) & QAbstractFileEngine::DirectoryType))
+
+    QScopedPointer<QDirPrivate> dir(new QDirPrivate(*d_ptr.constData()));
+    dir->setPath(absolutePath);
+
+    if (!(dir->fileEngine->fileFlags(QAbstractFileEngine::TypesMask) & QAbstractFileEngine::DirectoryType))
         return false;
+
+    d_ptr = dir.take();
     return true;
 }
 
@@ -1614,19 +1568,18 @@ bool QDir::makeAbsolute() // ### What do the return values signify?
 */
 bool QDir::operator==(const QDir &dir) const
 {
-    const QDirPrivate *d = d_func();
-    const QDirPrivate *other = dir.d_func();
+    const QDirPrivate *d = d_ptr.constData();
+    const QDirPrivate *other = dir.d_ptr.constData();
 
-    if (d->data == other->data)
+    if (d == other)
         return true;
-    Q_ASSERT(d->data->fileEngine && other->data->fileEngine);
-    if (d->data->fileEngine->caseSensitive() != other->data->fileEngine->caseSensitive())
+    if (d->fileEngine->caseSensitive() != other->fileEngine->caseSensitive())
         return false;
-    if (d->data->filters == other->data->filters
-       && d->data->sort == other->data->sort
-       && d->data->nameFilters == other->data->nameFilters) {
+    if (d->filters == other->filters
+       && d->sort == other->sort
+       && d->nameFilters == other->nameFilters) {
         QString dir1 = absolutePath(), dir2 = dir.absolutePath();
-        if (!other->data->fileEngine->caseSensitive())
+        if (!other->fileEngine->caseSensitive())
             return (dir1.toLower() == dir2.toLower());
 
         return (dir1 == dir2);
@@ -1641,11 +1594,7 @@ bool QDir::operator==(const QDir &dir) const
 */
 QDir &QDir::operator=(const QDir &dir)
 {
-    if (this == &dir)
-        return *this;
-
-    Q_D(QDir);
-    qAtomicAssign(d->data, dir.d_func()->data);
+    d_ptr = dir.d_ptr;
     return *this;
 }
 
@@ -1659,9 +1608,7 @@ QDir &QDir::operator=(const QDir &dir)
 */
 QDir &QDir::operator=(const QString &path)
 {
-    Q_D(QDir);
-
-    d->setPath(path);
+    d_ptr->setPath(path);
     return *this;
 }
 
@@ -1705,14 +1652,10 @@ bool QDir::remove(const QString &fileName)
 */
 bool QDir::rename(const QString &oldName, const QString &newName)
 {
-    Q_D(QDir);
-
     if (oldName.isEmpty() || newName.isEmpty()) {
         qWarning("QDir::rename: Empty or null file name(s)");
         return false;
     }
-    if (!d->data->fileEngine)
-        return false;
 
     QFile file(filePath(oldName));
     if (!file.exists())
@@ -2150,9 +2093,9 @@ bool QDir::isRelativePath(const QString &path)
 */
 void QDir::refresh() const
 {
-    Q_D(const QDir);
-
-    const_cast<QDirPrivate *>(d)->reset();
+    QDirPrivate *d = const_cast<QDir*>(this)->d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 }
 
 /*!
@@ -2228,7 +2171,7 @@ QStringList QDir::nameFiltersFromString(const QString &nameFilter)
 */
 bool QDir::matchAllDirs() const
 {
-    Q_D(const QDir);
+    const QDirPrivate* d = d_ptr.constData();
     return d->matchAllDirs;
 }
 
@@ -2240,9 +2183,10 @@ bool QDir::matchAllDirs() const
 */
 void QDir::setMatchAllDirs(bool on)
 {
-    Q_D(QDir);
+    QDirPrivate* d = d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 
-    d->reset();
     d->matchAllDirs = on;
 }
 
@@ -2251,8 +2195,7 @@ void QDir::setMatchAllDirs(bool on)
 */
 QString QDir::nameFilter() const
 {
-    Q_D(const QDir);
-
+    const QDirPrivate* d = d_ptr.constData();
     return nameFilters().join(QString(d->filterSepChar));
 }
 
@@ -2278,10 +2221,12 @@ QString QDir::nameFilter() const
 */
 void QDir::setNameFilter(const QString &nameFilter)
 {
-    Q_D(QDir);
+    QDirPrivate* d = d_ptr.data();
+    d->initFileEngine();
+    d->clearFileLists();
 
     d->filterSepChar = QDirPrivate::getFilterSepChar(nameFilter);
-    setNameFilters(QDirPrivate::splitFilters(nameFilter, d->filterSepChar));
+    d->nameFilters = QDirPrivate::splitFilters(nameFilter, d->filterSepChar);
 }
 
 /*!
diff --git a/src/corelib/io/qdir.h b/src/corelib/io/qdir.h
index 28da271..7e5fbac 100644
--- a/src/corelib/io/qdir.h
+++ b/src/corelib/io/qdir.h
@@ -45,7 +45,7 @@
 #include <QtCore/qstring.h>
 #include <QtCore/qfileinfo.h>
 #include <QtCore/qstringlist.h>
-#include <QtCore/qscopedpointer.h>
+#include <QtCore/qshareddata.h>
 
 QT_BEGIN_HEADER
 
@@ -58,9 +58,8 @@ class QDirPrivate;
 class Q_CORE_EXPORT QDir
 {
 protected:
-    QScopedPointer<QDirPrivate> d_ptr;
-private:
-    Q_DECLARE_PRIVATE(QDir)
+    QSharedDataPointer<QDirPrivate> d_ptr;
+
 public:
     enum Filter { Dirs        = 0x001,
                   Files       = 0x002,
diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp
index 61f7180..7eca212 100644
--- a/src/corelib/io/qfileinfo.cpp
+++ b/src/corelib/io/qfileinfo.cpp
@@ -47,59 +47,27 @@
 
 QT_BEGIN_NAMESPACE
 
-QFileInfoPrivate::QFileInfoPrivate(const QFileInfo *copy)
-{
-    if (copy) {
-        copy->d_func()->data->ref.ref();
-        data = copy->d_func()->data;
-    } else {
-        data = new QFileInfoPrivate::Data;
-    }
-}
-
-QFileInfoPrivate::~QFileInfoPrivate()
-{
-    if (!data->ref.deref())
-        delete data;
-    data = 0;
-}
-
-void QFileInfoPrivate::initFileEngine(const QString &file)
-{
-    detach();
-    delete data->fileEngine;
-    data->fileEngine = 0;
-    data->clear();
-    data->fileEngine = QAbstractFileEngine::create(file);
-    data->fileName = file;
-}
-
-void QFileInfoPrivate::detach()
-{
-    qAtomicDetach(data);
-}
-
 QString QFileInfoPrivate::getFileName(QAbstractFileEngine::FileName name) const
 {
-    if (data->cache_enabled && !data->fileNames[(int)name].isNull())
-        return data->fileNames[(int)name];
-    QString ret = data->fileEngine->fileName(name);
+    if (cache_enabled && !fileNames[(int)name].isNull())
+        return fileNames[(int)name];
+    QString ret = fileEngine->fileName(name);
     if (ret.isNull())
         ret = QLatin1String("");
-    if (data->cache_enabled)
-        data->fileNames[(int)name] = ret;
+    if (cache_enabled)
+        fileNames[(int)name] = ret;
     return ret;
 }
 
 QString QFileInfoPrivate::getFileOwner(QAbstractFileEngine::FileOwner own) const
 {
-    if (data->cache_enabled && !data->fileOwners[(int)own].isNull())
-        return data->fileOwners[(int)own];
-    QString ret = data->fileEngine->owner(own);
+    if (cache_enabled && !fileOwners[(int)own].isNull())
+        return fileOwners[(int)own];
+    QString ret = fileEngine->owner(own);
     if (ret.isNull())
         ret = QLatin1String("");
-    if (data->cache_enabled)
-        data->fileOwners[(int)own] = ret;
+    if (cache_enabled)
+        fileOwners[(int)own] = ret;
     return ret;
 }
 
@@ -118,7 +86,7 @@ uint QFileInfoPrivate::getFileFlags(QAbstractFileEngine::FileFlags request) cons
     uint cachedFlags = 0;
 
     if (request & (QAbstractFileEngine::FlagsMask | QAbstractFileEngine::TypesMask)) {
-        if (!data->getCachedFlag(CachedFileFlags)) {
+        if (!getCachedFlag(CachedFileFlags)) {
             req |= QAbstractFileEngine::FlagsMask;
             req |= QAbstractFileEngine::TypesMask;
             req &= (~QAbstractFileEngine::LinkType);
@@ -128,14 +96,14 @@ uint QFileInfoPrivate::getFileFlags(QAbstractFileEngine::FileFlags request) cons
         }
 
         if (request & QAbstractFileEngine::LinkType) {
-            if (!data->getCachedFlag(CachedLinkTypeFlag)) {
+            if (!getCachedFlag(CachedLinkTypeFlag)) {
                 req |= QAbstractFileEngine::LinkType;
                 cachedFlags |= CachedLinkTypeFlag;
             }
         }
 
         if (request & QAbstractFileEngine::BundleType) {
-            if (!data->getCachedFlag(CachedBundleTypeFlag)) {
+            if (!getCachedFlag(CachedBundleTypeFlag)) {
                 req |= QAbstractFileEngine::BundleType;
                 cachedFlags |= CachedBundleTypeFlag;
             }
@@ -143,30 +111,30 @@ uint QFileInfoPrivate::getFileFlags(QAbstractFileEngine::FileFlags request) cons
     }
 
     if (request & QAbstractFileEngine::PermsMask) {
-        if (!data->getCachedFlag(CachedPerms)) {
+        if (!getCachedFlag(CachedPerms)) {
             req |= QAbstractFileEngine::PermsMask;
             cachedFlags |= CachedPerms;
         }
     }
 
     if (req) {
-        if (data->cache_enabled)
+        if (cache_enabled)
             req &= (~QAbstractFileEngine::Refresh);
         else
             req |= QAbstractFileEngine::Refresh;
 
-        QAbstractFileEngine::FileFlags flags = data->fileEngine->fileFlags(req);
-        data->fileFlags |= uint(flags);
-        data->setCachedFlag(cachedFlags);
+        QAbstractFileEngine::FileFlags flags = fileEngine->fileFlags(req);
+        fileFlags |= uint(flags);
+        setCachedFlag(cachedFlags);
     }
 
-    return data->fileFlags & request;
+    return fileFlags & request;
 }
 
 QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request) const
 {
-    if (!data->cache_enabled)
-        data->clearFlags();
+    if (!cache_enabled)
+        clearFlags();
     uint cf;
     if (request == QAbstractFileEngine::CreationTime)
         cf = CachedCTime;
@@ -174,11 +142,11 @@ QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request)
         cf = CachedMTime;
     else
         cf = CachedATime;
-    if (!data->getCachedFlag(cf)) {
-        data->fileTimes[request] = data->fileEngine->fileTime(request);
-        data->setCachedFlag(cf);
+    if (!getCachedFlag(cf)) {
+        fileTimes[request] = fileEngine->fileTime(request);
+        setCachedFlag(cf);
     }
-    return data->fileTimes[request];
+    return fileTimes[request];
 }
 
 //************* QFileInfo
@@ -285,9 +253,8 @@ QFileInfo::QFileInfo() : d_ptr(new QFileInfoPrivate())
 
     \sa setFile(), isRelative(), QDir::setCurrent(), QDir::isRelativePath()
 */
-QFileInfo::QFileInfo(const QString &file) : d_ptr(new QFileInfoPrivate())
+QFileInfo::QFileInfo(const QString &file) : d_ptr(new QFileInfoPrivate(file))
 {
-    d_ptr->initFileEngine(file);
 }
 
 /*!
@@ -299,9 +266,8 @@ QFileInfo::QFileInfo(const QString &file) : d_ptr(new QFileInfoPrivate())
 
     \sa isRelative()
 */
-QFileInfo::QFileInfo(const QFile &file) : d_ptr(new QFileInfoPrivate())
+QFileInfo::QFileInfo(const QFile &file) : d_ptr(new QFileInfoPrivate(file.fileName()))
 {
-    d_ptr->initFileEngine(file.fileName());
 }
 
 /*!
@@ -316,15 +282,16 @@ QFileInfo::QFileInfo(const QFile &file) : d_ptr(new QFileInfoPrivate())
 
     \sa isRelative()
 */
-QFileInfo::QFileInfo(const QDir &dir, const QString &file) : d_ptr(new QFileInfoPrivate())
+QFileInfo::QFileInfo(const QDir &dir, const QString &file)
+    : d_ptr(new QFileInfoPrivate(dir.filePath(file)))
 {
-    d_ptr->initFileEngine(dir.filePath(file));
 }
 
 /*!
     Constructs a new QFileInfo that is a copy of the given \a fileinfo.
 */
-QFileInfo::QFileInfo(const QFileInfo &fileinfo) : d_ptr(new QFileInfoPrivate(&fileinfo))
+QFileInfo::QFileInfo(const QFileInfo &fileinfo)
+    : d_ptr(fileinfo.d_ptr)
 {
 
 }
@@ -359,17 +326,17 @@ bool QFileInfo::operator==(const QFileInfo &fileinfo) const
     Q_D(const QFileInfo);
     // ### Qt 5: understand long and short file names on Windows
     // ### (GetFullPathName()).
-    if (fileinfo.d_func()->data == d->data)
+    if (fileinfo.d_ptr == d_ptr)
         return true;
-    if (!d->data->fileEngine || !fileinfo.d_func()->data->fileEngine)
+    if (d->isDefaultConstructed || fileinfo.d_ptr->isDefaultConstructed)
         return false;
-    if (d->data->fileEngine->caseSensitive() != fileinfo.d_func()->data->fileEngine->caseSensitive())
+    if (d->fileEngine->caseSensitive() != fileinfo.d_ptr->fileEngine->caseSensitive())
         return false;
     if (fileinfo.size() == size()) { //if the size isn't the same...
         QString file1 = canonicalFilePath(),
                 file2 = fileinfo.canonicalFilePath();
         if (file1.length() == file2.length()) {
-            if (!fileinfo.d_func()->data->fileEngine->caseSensitive()) {
+            if (!fileinfo.d_ptr->fileEngine->caseSensitive()) {
                 for (int i = 0; i < file1.length(); i++) {
                     if (file1.at(i).toLower() != file2.at(i).toLower())
                         return false;
@@ -407,8 +374,7 @@ bool QFileInfo::operator==(const QFileInfo &fileinfo)
 */
 QFileInfo &QFileInfo::operator=(const QFileInfo &fileinfo)
 {
-    Q_D(QFileInfo);
-    qAtomicAssign(d->data, fileinfo.d_func()->data);
+    d_ptr = fileinfo.d_ptr;
     return *this;
 }
 
@@ -429,7 +395,9 @@ QFileInfo &QFileInfo::operator=(const QFileInfo &fileinfo)
 */
 void QFileInfo::setFile(const QString &file)
 {
+    bool caching = d_ptr.constData()->cache_enabled;
     *this = QFileInfo(file);
+    d_ptr->cache_enabled = caching;
 }
 
 /*!
@@ -445,7 +413,7 @@ void QFileInfo::setFile(const QString &file)
 */
 void QFileInfo::setFile(const QFile &file)
 {
-    *this = QFileInfo(file.fileName());
+    setFile(file.fileName());
 }
 
 /*!
@@ -461,7 +429,7 @@ void QFileInfo::setFile(const QFile &file)
 */
 void QFileInfo::setFile(const QDir &dir, const QString &file)
 {
-    *this = QFileInfo(dir.filePath(file));
+    setFile(dir.filePath(file));
 }
 
 /*!
@@ -488,7 +456,7 @@ void QFileInfo::setFile(const QDir &dir, const QString &file)
 QString QFileInfo::absoluteFilePath() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::AbsoluteName);
 }
@@ -505,7 +473,7 @@ QString QFileInfo::absoluteFilePath() const
 QString QFileInfo::canonicalFilePath() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::CanonicalName);
 }
@@ -532,9 +500,9 @@ QString QFileInfo::absolutePath() const
 {
     Q_D(const QFileInfo);
 
-    if (!d->data->fileEngine) {
+    if (d->isDefaultConstructed) {
         return QLatin1String("");
-    } else if (d->data->fileName.isEmpty()) {
+    } else if (d->fileName.isEmpty()) {
         qWarning("QFileInfo::absolutePath: Constructed with empty filename");
         return QLatin1String("");
     }
@@ -552,7 +520,7 @@ QString QFileInfo::absolutePath() const
 QString QFileInfo::canonicalPath() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::CanonicalPathName);
 }
@@ -569,7 +537,7 @@ QString QFileInfo::canonicalPath() const
 QString QFileInfo::path() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::PathName);
 }
@@ -593,9 +561,9 @@ QString QFileInfo::path() const
 bool QFileInfo::isRelative() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return true;
-    return d->data->fileEngine->isRelativePath();
+    return d->fileEngine->isRelativePath();
 }
 
 /*!
@@ -607,11 +575,13 @@ bool QFileInfo::isRelative() const
 */
 bool QFileInfo::makeAbsolute()
 {
-    Q_D(QFileInfo);
-    if (!d->data->fileEngine || !d->data->fileEngine->isRelativePath())
+    if (d_ptr.constData()->isDefaultConstructed
+            || !d_ptr.constData()->fileEngine->isRelativePath())
         return false;
-    QString absFileName = d->getFileName(QAbstractFileEngine::AbsoluteName);
-    d->initFileEngine(absFileName);
+    QString absFileName = d_ptr.constData()->getFileName(QAbstractFileEngine::AbsoluteName);
+    // QSharedDataPointer::operator->() will detach.
+
+    setFile(absFileName);
     return true;
 }
 
@@ -624,7 +594,7 @@ bool QFileInfo::makeAbsolute()
 bool QFileInfo::exists() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::ExistsFlag);
 }
@@ -639,7 +609,7 @@ bool QFileInfo::exists() const
 void QFileInfo::refresh()
 {
     Q_D(QFileInfo);
-    d->reset();
+    d->clear();
 }
 
 /*!
@@ -651,7 +621,7 @@ void QFileInfo::refresh()
 QString QFileInfo::filePath() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::DefaultName);
 }
@@ -670,7 +640,7 @@ QString QFileInfo::filePath() const
 QString QFileInfo::fileName() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BaseName);
 }
@@ -690,7 +660,7 @@ QString QFileInfo::fileName() const
 QString QFileInfo::bundleName() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BundleName);
 }
@@ -714,7 +684,7 @@ QString QFileInfo::bundleName() const
 QString QFileInfo::baseName() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BaseName).section(QLatin1Char('.'), 0, 0);
 }
@@ -733,7 +703,7 @@ QString QFileInfo::baseName() const
 QString QFileInfo::completeBaseName() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     QString name = d->getFileName(QAbstractFileEngine::BaseName);
     int index = name.lastIndexOf(QLatin1Char('.'));
@@ -754,7 +724,7 @@ QString QFileInfo::completeBaseName() const
 QString QFileInfo::completeSuffix() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     QString fileName = d->getFileName(QAbstractFileEngine::BaseName);
     int firstDot = fileName.indexOf(QLatin1Char('.'));
@@ -781,7 +751,7 @@ QString QFileInfo::completeSuffix() const
 QString QFileInfo::suffix() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     QString fileName = d->getFileName(QAbstractFileEngine::BaseName);
     int lastDot = fileName.lastIndexOf(QLatin1Char('.'));
@@ -846,7 +816,7 @@ QDir QFileInfo::dir(bool absPath) const
 bool QFileInfo::isReadable() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::ReadUserPerm);
 }
@@ -859,7 +829,7 @@ bool QFileInfo::isReadable() const
 bool QFileInfo::isWritable() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::WriteUserPerm);
 }
@@ -872,7 +842,7 @@ bool QFileInfo::isWritable() const
 bool QFileInfo::isExecutable() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::ExeUserPerm);
 }
@@ -886,7 +856,7 @@ bool QFileInfo::isExecutable() const
 bool QFileInfo::isHidden() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::HiddenFlag);
 }
@@ -901,7 +871,7 @@ bool QFileInfo::isHidden() const
 bool QFileInfo::isFile() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::FileType);
 }
@@ -915,7 +885,7 @@ bool QFileInfo::isFile() const
 bool QFileInfo::isDir() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::DirectoryType);
 }
@@ -931,7 +901,7 @@ bool QFileInfo::isDir() const
 bool QFileInfo::isBundle() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::BundleType);
 }
@@ -956,7 +926,7 @@ bool QFileInfo::isBundle() const
 bool QFileInfo::isSymLink() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::LinkType);
 }
@@ -969,7 +939,7 @@ bool QFileInfo::isSymLink() const
 bool QFileInfo::isRoot() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return true;
     return d->getFileFlags(QAbstractFileEngine::RootFlag);
 }
@@ -997,7 +967,7 @@ bool QFileInfo::isRoot() const
 QString QFileInfo::readLink() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::LinkName);
 }
@@ -1015,7 +985,7 @@ QString QFileInfo::readLink() const
 QString QFileInfo::owner() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileOwner(QAbstractFileEngine::OwnerUser);
 }
@@ -1031,9 +1001,9 @@ QString QFileInfo::owner() const
 uint QFileInfo::ownerId() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return 0;
-    return d->data->fileEngine->ownerId(QAbstractFileEngine::OwnerUser);
+    return d->fileEngine->ownerId(QAbstractFileEngine::OwnerUser);
 }
 
 /*!
@@ -1049,7 +1019,7 @@ uint QFileInfo::ownerId() const
 QString QFileInfo::group() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QLatin1String("");
     return d->getFileOwner(QAbstractFileEngine::OwnerGroup);
 }
@@ -1065,9 +1035,9 @@ QString QFileInfo::group() const
 uint QFileInfo::groupId() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return 0;
-    return d->data->fileEngine->ownerId(QAbstractFileEngine::OwnerGroup);
+    return d->fileEngine->ownerId(QAbstractFileEngine::OwnerGroup);
 }
 
 /*!
@@ -1086,7 +1056,7 @@ uint QFileInfo::groupId() const
 bool QFileInfo::permission(QFile::Permissions permissions) const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return false;
     return d->getFileFlags(QAbstractFileEngine::FileFlags((int)permissions)) == (uint)permissions;
 }
@@ -1098,7 +1068,7 @@ bool QFileInfo::permission(QFile::Permissions permissions) const
 QFile::Permissions QFileInfo::permissions() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return 0;
     return QFile::Permissions(d->getFileFlags(QAbstractFileEngine::PermsMask) & QAbstractFileEngine::PermsMask);
 }
@@ -1113,13 +1083,13 @@ QFile::Permissions QFileInfo::permissions() const
 qint64 QFileInfo::size() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return 0;
-    if (!d->data->getCachedFlag(QFileInfoPrivate::CachedSize)) {
-        d->data->setCachedFlag(QFileInfoPrivate::CachedSize);
-        d->data->fileSize = d->data->fileEngine->size();
+    if (!d->getCachedFlag(QFileInfoPrivate::CachedSize)) {
+        d->setCachedFlag(QFileInfoPrivate::CachedSize);
+        d->fileSize = d->fileEngine->size();
     }
-    return d->data->fileSize;
+    return d->fileSize;
 }
 
 /*!
@@ -1138,7 +1108,7 @@ qint64 QFileInfo::size() const
 QDateTime QFileInfo::created() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::CreationTime);
 }
@@ -1151,7 +1121,7 @@ QDateTime QFileInfo::created() const
 QDateTime QFileInfo::lastModified() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::ModificationTime);
 }
@@ -1167,7 +1137,7 @@ QDateTime QFileInfo::lastModified() const
 QDateTime QFileInfo::lastRead() const
 {
     Q_D(const QFileInfo);
-    if (!d->data->fileEngine)
+    if (d->isDefaultConstructed)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::AccessTime);
 }
@@ -1177,8 +1147,7 @@ QDateTime QFileInfo::lastRead() const
 */
 void QFileInfo::detach()
 {
-    Q_D(QFileInfo);
-    d->detach();
+    d_ptr.detach();
 }
 
 /*!
@@ -1189,7 +1158,7 @@ void QFileInfo::detach()
 bool QFileInfo::caching() const
 {
     Q_D(const QFileInfo);
-    return d->data->cache_enabled;
+    return d->cache_enabled;
 }
 
 /*!
@@ -1207,8 +1176,7 @@ bool QFileInfo::caching() const
 void QFileInfo::setCaching(bool enable)
 {
     Q_D(QFileInfo);
-    detach();
-    d->data->cache_enabled = enable;
+    d->cache_enabled = enable;
 }
 
 /*!
diff --git a/src/corelib/io/qfileinfo.h b/src/corelib/io/qfileinfo.h
index 7e82aed..f0128b1 100644
--- a/src/corelib/io/qfileinfo.h
+++ b/src/corelib/io/qfileinfo.h
@@ -44,7 +44,7 @@
 
 #include <QtCore/qfile.h>
 #include <QtCore/qlist.h>
-#include <QtCore/qscopedpointer.h>
+#include <QtCore/qshareddata.h>
 
 QT_BEGIN_HEADER
 
@@ -166,10 +166,20 @@ public:
 #endif
 
 protected:
-    QScopedPointer<QFileInfoPrivate> d_ptr;
+    QSharedDataPointer<QFileInfoPrivate> d_ptr;
 private:
-    Q_DECLARE_PRIVATE(QFileInfo)
+    inline QFileInfoPrivate* d_func()
+    {
+        detach();
+        return const_cast<QFileInfoPrivate *>(d_ptr.constData());
+    }
+
+    inline const QFileInfoPrivate* d_func() const
+    {
+        return d_ptr.constData();
+    }
 };
+
 Q_DECLARE_TYPEINFO(QFileInfo, Q_MOVABLE_TYPE);
 
 #ifdef QT3_SUPPORT
diff --git a/src/corelib/io/qfileinfo_p.h b/src/corelib/io/qfileinfo_p.h
index 306ffe1..b9b1092 100644
--- a/src/corelib/io/qfileinfo_p.h
+++ b/src/corelib/io/qfileinfo_p.h
@@ -57,71 +57,83 @@
 #include "qabstractfileengine.h"
 #include "qdatetime.h"
 #include "qatomic.h"
+#include "qshareddata.h"
 
 QT_BEGIN_NAMESPACE
 
-class QFileInfoPrivate
+class QFileInfoPrivate : public QSharedData
 {
 public:
-    QFileInfoPrivate(const QFileInfo *copy=0);
-    ~QFileInfoPrivate();
 
-    void initFileEngine(const QString &);
+    enum { CachedFileFlags=0x01, CachedLinkTypeFlag=0x02, CachedBundleTypeFlag=0x04,
+           CachedMTime=0x10, CachedCTime=0x20, CachedATime=0x40,
+           CachedSize =0x08, CachedPerms=0x80 };
+
+    inline QFileInfoPrivate()
+        : QSharedData(), fileEngine(0),
+        cachedFlags(0),
+        isDefaultConstructed(true),
+        cache_enabled(true), fileFlags(0), fileSize(0)
+    {}
+    inline QFileInfoPrivate(const QFileInfoPrivate &copy)
+        : QSharedData(copy), fileEngine(QAbstractFileEngine::create(copy.fileName)),
+        fileName(copy.fileName),
+        cachedFlags(0),
+#ifndef QT_NO_FSFILEENGINE
+        isDefaultConstructed(false),
+#else
+        isDefaultConstructed(!fileEngine),
+#endif
+        cache_enabled(copy.cache_enabled), fileFlags(0), fileSize(0)
+    {}
+    inline QFileInfoPrivate(const QString &file)
+        : QSharedData(), fileEngine(QAbstractFileEngine::create(file)),
+        fileName(file),
+        cachedFlags(0),
+#ifndef QT_NO_FSFILEENGINE
+        isDefaultConstructed(false),
+#else
+        isDefaultConstructed(!fileEngine),
+#endif
+        cache_enabled(true), fileFlags(0), fileSize(0)
+    {
+    }
+
+    inline void clearFlags() const {
+        fileFlags = 0;
+        cachedFlags = 0;
+        if (fileEngine)
+            (void)fileEngine->fileFlags(QAbstractFileEngine::Refresh);
+    }
+    inline void clear() {
+        clearFlags();
+        for (int i = QAbstractFileEngine::NFileNames - 1 ; i >= 0 ; --i)
+            fileNames[i].clear();
+        fileOwners[1].clear();
+        fileOwners[0].clear();
+    }
 
     uint getFileFlags(QAbstractFileEngine::FileFlags) const;
     QDateTime &getFileTime(QAbstractFileEngine::FileTime) const;
     QString getFileName(QAbstractFileEngine::FileName) const;
     QString getFileOwner(QAbstractFileEngine::FileOwner own) const;
 
-    enum { CachedFileFlags=0x01, CachedLinkTypeFlag=0x02, CachedBundleTypeFlag=0x04,
-           CachedMTime=0x10, CachedCTime=0x20, CachedATime=0x40,
-           CachedSize =0x08, CachedPerms=0x80 };
-    struct Data {
-        inline Data()
-            : ref(1), fileEngine(0),
-              cachedFlags(0), cache_enabled(1), fileFlags(0), fileSize(0)
-        {}
-        inline Data(const Data &copy)
-            : ref(1), fileEngine(QAbstractFileEngine::create(copy.fileName)),
-              fileName(copy.fileName),
-              cachedFlags(0), cache_enabled(copy.cache_enabled), fileFlags(0), fileSize(0)
-        {}
-        inline ~Data() { delete fileEngine; }
-        inline void clearFlags() {
-            fileFlags = 0;
-            cachedFlags = 0;
-            if (fileEngine)
-                (void)fileEngine->fileFlags(QAbstractFileEngine::Refresh);
-        }
-        inline void clear() {
-            clearFlags();
-            for (int i = QAbstractFileEngine::NFileNames - 1 ; i >= 0 ; --i)
-                fileNames[i].clear();
-            fileOwners[1].clear();
-            fileOwners[0].clear();
-        }
-        mutable QAtomicInt ref;
+    QScopedPointer<QAbstractFileEngine> const fileEngine;
 
-        QAbstractFileEngine *fileEngine;
-        mutable QString fileName;
-        mutable QString fileNames[QAbstractFileEngine::NFileNames];
-        mutable QString fileOwners[2];
+    mutable QString fileName;
+    mutable QString fileNames[QAbstractFileEngine::NFileNames];
+    mutable QString fileOwners[2];
 
-        mutable uint cachedFlags : 31;
-        mutable uint cache_enabled : 1;
-        mutable uint fileFlags;
-        mutable qint64 fileSize;
-        mutable QDateTime fileTimes[3];
-        inline bool getCachedFlag(uint c) const
-        { return cache_enabled ? (cachedFlags & c) : 0; }
-        inline void setCachedFlag(uint c)
-        { if (cache_enabled) cachedFlags |= c; }
-    } *data;
-    inline void reset() {
-        detach();
-        data->clear();
-    }
-    void detach();
+    mutable uint cachedFlags : 30;
+    bool const isDefaultConstructed : 1; // QFileInfo is a default constructed instance
+    bool cache_enabled : 1;
+    mutable uint fileFlags;
+    mutable qint64 fileSize;
+    mutable QDateTime fileTimes[3];
+    inline bool getCachedFlag(uint c) const
+    { return cache_enabled ? (cachedFlags & c) : 0; }
+    inline void setCachedFlag(uint c) const
+    { if (cache_enabled) cachedFlags |= c; }
 };
 
 QT_END_NAMESPACE
diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index 56a03c9..74c24b5 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -3399,16 +3399,20 @@ QString QUrlPrivate::canonicalHost() const
     if (host.contains(QLatin1Char(':'))) {
         // This is an IP Literal, use _IPLiteral to validate
         QByteArray ba = host.toLatin1();
+        bool needsBraces = false;
         if (!ba.startsWith('[')) {
             // surround the IP Literal with [ ] if it's not already done so
             ba.reserve(ba.length() + 2);
             ba.prepend('[');
             ba.append(']');
+            needsBraces = true;
         }
 
         const char *ptr = ba.constData();
         if (!_IPLiteral(&ptr))
             that->host.clear();
+        else if (needsBraces)
+            that->host = QString::fromLatin1(ba.toLower());
         else
             that->host = host.toLower();
     } else {
diff --git a/src/corelib/tools/qbytearray.cpp b/src/corelib/tools/qbytearray.cpp
index 8d38e4c..033da90 100644
--- a/src/corelib/tools/qbytearray.cpp
+++ b/src/corelib/tools/qbytearray.cpp
@@ -850,7 +850,7 @@ QByteArray::Data QByteArray::shared_empty = { Q_BASIC_ATOMIC_INITIALIZER(1),
     This operation takes \l{constant time}, because QByteArray is
     \l{implicitly shared}. This makes returning a QByteArray from a
     function very fast. If a shared instance is modified, it will be
-    copied (copy-on-write), and that takes \l{linear time}.
+    copied (copy-on-write), taking \l{linear time}.
 
     \sa operator=()
 */
@@ -1186,10 +1186,18 @@ void QByteArray::chop(int n)
     Example:
     \snippet doc/src/snippets/code/src_corelib_tools_qbytearray.cpp 12
 
-    This operation is typically very fast (\l{constant time}),
-    because QByteArray preallocates extra space at the end of the
-    character data so it can grow without reallocating the entire
-    data each time.
+    Note: QByteArray is an \l{implicitly shared} class. Consequently,
+    if \e this is an empty QByteArray, then \e this will just share
+    the data held in \a ba. In this case, no copying of data is done,
+    taking \l{constant time}. If a shared instance is modified, it will
+    be copied (copy-on-write), taking \l{linear time}.
+
+    If \e this is not an empty QByteArray, a deep copy of the data is
+    performed, taking \l{linear time}.
+
+    This operation typically does not suffer from allocation overhead,
+    because QByteArray preallocates extra space at the end of the data
+    so that it may grow without reallocating for each append operation.
 
     \sa append(), prepend()
 */
@@ -1474,7 +1482,12 @@ QByteArray QByteArray::nulTerminated() const
 
     Note: QByteArray is an \l{implicitly shared} class. Consequently,
     if \e this is an empty QByteArray, then \e this will just share
-    the data held in \a ba. In this case, no copying of data is done.
+    the data held in \a ba. In this case, no copying of data is done,
+    taking \l{constant time}. If a shared instance is modified, it will
+    be copied (copy-on-write), taking \l{linear time}.
+
+    If \e this is not an empty QByteArray, a deep copy of the data is
+    performed, taking \l{linear time}.
 
     \sa append(), insert()
 */
@@ -1547,14 +1560,18 @@ QByteArray &QByteArray::prepend(char ch)
 
     This is the same as insert(size(), \a ba).
 
-    This operation is typically very fast (\l{constant time}),
-    because QByteArray preallocates extra space at the end of the
-    character data so it can grow without reallocating the entire
-    data each time.
-
     Note: QByteArray is an \l{implicitly shared} class. Consequently,
     if \e this is an empty QByteArray, then \e this will just share
-    the data held in \a ba. In this case, no copying of data is done.
+    the data held in \a ba. In this case, no copying of data is done,
+    taking \l{constant time}. If a shared instance is modified, it will
+    be copied (copy-on-write), taking \l{linear time}.
+
+    If \e this is not an empty QByteArray, a deep copy of the data is
+    performed, taking \l{linear time}.
+
+    This operation typically does not suffer from allocation overhead,
+    because QByteArray preallocates extra space at the end of the data
+    so that it may grow without reallocating for each append operation.
 
     \sa operator+=(), prepend(), insert()
 */
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp
index a9c33f1..7babf3a 100644
--- a/src/corelib/tools/qsimd.cpp
+++ b/src/corelib/tools/qsimd.cpp
@@ -286,10 +286,13 @@ static inline uint detectProcessorFeatures()
     uint feature_result = 0;
 
 #if defined(Q_CC_GNU)
-    asm ("cpuid"
-        : "=c" (feature_result)
+    long tmp;
+    asm ("xchg %%rbx, %1\n"
+         "cpuid\n"
+         "xchg %%rbx, %1\n"
+        : "=c" (feature_result), "=&r" (tmp)
         : "a" (1)
-        : "%ebx", "%edx"
+        : "%edx"
         );
 #elif defined (Q_OS_WIN64)
     {
diff --git a/src/network/access/qnetworkreply.cpp b/src/network/access/qnetworkreply.cpp
index c8b8c1f..261ed20 100644
--- a/src/network/access/qnetworkreply.cpp
+++ b/src/network/access/qnetworkreply.cpp
@@ -283,9 +283,6 @@ QNetworkReplyPrivate::QNetworkReplyPrivate()
     The upload is finished when \a bytesSent is equal to \a
     bytesTotal. At that time, \a bytesTotal will not be -1.
 
-    This signal is suitable to connecting to QProgressBar::setValue()
-    to update the QProgressBar that provides user feedback.
-
     \sa downloadProgress()
 */
 
@@ -306,9 +303,6 @@ QNetworkReplyPrivate::QNetworkReplyPrivate()
     The download is finished when \a bytesReceived is equal to \a
     bytesTotal. At that time, \a bytesTotal will not be -1.
 
-    This signal is suitable to connecting to QProgressBar::setValue()
-    to update the QProgressBar that provides user feedback.
-
     Note that the values of both \a bytesReceived and \a bytesTotal
     may be different from size(), the total number of bytes
     obtained through read() or readAll(), or the value of the
diff --git a/src/tools/rcc/rcc.cpp b/src/tools/rcc/rcc.cpp
index 1f6e58f..0e3167d 100644
--- a/src/tools/rcc/rcc.cpp
+++ b/src/tools/rcc/rcc.cpp
@@ -544,8 +544,11 @@ bool RCCResourceLibrary::addFile(const QString &alias, const RCCFileInfo &file)
     const QString filename = nodes.at(nodes.size()-1);
     RCCFileInfo *s = new RCCFileInfo(file);
     s->m_parent = parent;
-    if (parent->m_children.contains(filename))
-        qWarning("potential duplicate alias detected: '%s'", qPrintable(filename));
+    if (parent->m_children.contains(filename)) {
+        foreach (const QString &fileName, m_fileNames)
+            qWarning("%s: Warning: potential duplicate alias detected: '%s'",
+                     qPrintable(fileName), qPrintable(filename));
+        }
     parent->m_children.insertMulti(filename, s);
     return true;
 }
diff --git a/src/tools/uic/cpp/cppextractimages.cpp b/src/tools/uic/cpp/cppextractimages.cpp
index 52c1b9d..5809724 100644
--- a/src/tools/uic/cpp/cppextractimages.cpp
+++ b/src/tools/uic/cpp/cppextractimages.cpp
@@ -76,14 +76,14 @@ void ExtractImages::acceptUI(DomUI *node)
     if (m_option.qrcOutputFile.size()) {
         f.setFileName(m_option.qrcOutputFile);
         if (!f.open(QIODevice::WriteOnly | QFile::Text)) {
-            fprintf(stderr, "Could not create resource file\n");
+            fprintf(stderr, "%s: Error: Could not create resource file\n", qPrintable(m_option.messagePrefix()));
             return;
         }
 
         QFileInfo fi(m_option.qrcOutputFile);
         QDir dir = fi.absoluteDir();
         if (!dir.exists(QLatin1String("images")) && !dir.mkdir(QLatin1String("images"))) {
-            fprintf(stderr, "Could not create image dir\n");
+            fprintf(stderr, "%s: Error: Could not create image dir\n", qPrintable(m_option.messagePrefix()));
             return;
         }
         dir.cd(QLatin1String("images"));
@@ -126,7 +126,9 @@ void ExtractImages::acceptImage(DomImage *image)
     if (isXPM_GZ)
         openMode |= QIODevice::Text;
     if (!f.open(openMode)) {
-        fprintf(stderr, "Could not create image file %s: %s", qPrintable(fname), qPrintable(f.errorString()));
+        fprintf(stderr, "%s: Error: Could not create image file %s: %s",
+                qPrintable(m_option.messagePrefix()),
+                qPrintable(fname), qPrintable(f.errorString()));
         return;
     }
 
diff --git a/src/tools/uic/cpp/cppwriteincludes.cpp b/src/tools/uic/cpp/cppwriteincludes.cpp
index 4e0ee4a..7b9d03a 100644
--- a/src/tools/uic/cpp/cppwriteincludes.cpp
+++ b/src/tools/uic/cpp/cppwriteincludes.cpp
@@ -126,8 +126,9 @@ void WriteIncludes::acceptUI(DomUI *node)
 
     if (m_uic->hasExternalPixmap() && m_uic->pixmapFunction() == QLatin1String("qPixmapFromMimeSource")) {
 #ifdef QT_NO_QT3_SUPPORT
-        qWarning("Warning: The form file has external pixmaps or qPixmapFromMimeSource() set as a pixmap function. "
-                 "This requires Qt 3 support, which is disabled. The resulting code will not compile.");
+        qWarning("%s: Warning: The form file has external pixmaps or qPixmapFromMimeSource() set as a pixmap function. "
+                 "This requires Qt 3 support, which is disabled. The resulting code will not compile.",
+                 qPrintable(m_uic->option().messagePrefix()));
 #endif
         add(QLatin1String("Q3MimeSourceFactory"));
     }
@@ -212,8 +213,9 @@ void WriteIncludes::insertIncludeForClass(const QString &className, QString head
         header = lowerClassName;
         header += QLatin1String(".h");
         if (warnHeaderGeneration) {
-            qWarning("Warning: generated header '%s' for class '%s'.", qPrintable(header),
-                     qPrintable(className));
+            qWarning("%s: Warning: generated header '%s' for class '%s'.",
+                     qPrintable(m_uic->option().messagePrefix()),
+                     qPrintable(header), qPrintable(className));
 
         }
 
diff --git a/src/tools/uic/cpp/cppwriteinitialization.cpp b/src/tools/uic/cpp/cppwriteinitialization.cpp
index dc1d181..b06eb7a 100644
--- a/src/tools/uic/cpp/cppwriteinitialization.cpp
+++ b/src/tools/uic/cpp/cppwriteinitialization.cpp
@@ -155,7 +155,7 @@ namespace {
             if (const DomResourceIcon *dri = p->elementIconSet()) {
                 if (!isIconFormat44(dri)) {
                     if (dri->text().isEmpty())  {
-                        const QString msg = QString::fromUtf8("%1: An invalid icon property '%2' was encountered.").arg(fileName).arg(p->attributeName());
+                        const QString msg = QString::fromUtf8("%1: Warning: An invalid icon property '%2' was encountered.").arg(fileName).arg(p->attributeName());
                         qWarning("%s", qPrintable(msg));
                         return false;
                     }
@@ -165,7 +165,7 @@ namespace {
         case DomProperty::Pixmap:
             if (const DomResourcePixmap *drp = p->elementPixmap())
                 if (drp->text().isEmpty()) {
-                    const QString msg = QString::fromUtf8("%1: An invalid pixmap property '%2' was encountered.").arg(fileName).arg(p->attributeName());
+                    const QString msg = QString::fromUtf8("%1: Warning: An invalid pixmap property '%2' was encountered.").arg(fileName).arg(p->attributeName());
                     qWarning("%s", qPrintable(msg));
                     return false;
                 }
@@ -539,10 +539,14 @@ void WriteInitialization::acceptUI(DomUI *node)
         const Buddy &b = m_buddies.at(i);
 
         if (!m_registeredWidgets.contains(b.objName)) {
-            fprintf(stderr, "'%s' isn't a valid widget\n", b.objName.toLatin1().data());
+            fprintf(stderr, "%s: Warning: Buddy assignment: '%s' is not a valid widget.\n",
+                    qPrintable(m_option.messagePrefix()),
+                    b.objName.toLatin1().data());
             continue;
         } else if (!m_registeredWidgets.contains(b.buddy)) {
-            fprintf(stderr, "'%s' isn't a valid widget\n", b.buddy.toLatin1().data());
+            fprintf(stderr, "%s: Warning: Buddy assignment: '%s' is not a valid widget.\n",
+                    qPrintable(m_option.messagePrefix()),
+                    b.buddy.toLatin1().data());
             continue;
         }
 
@@ -867,7 +871,9 @@ void WriteInitialization::acceptWidget(DomWidget *node)
         const QString name = zOrder.at(i);
 
         if (!m_registeredWidgets.contains(name)) {
-            fprintf(stderr, "'%s' isn't a valid widget\n", name.toLatin1().data());
+            fprintf(stderr, "%s: Warning: Z-order assignment: '%s' is not a valid widget.\n",
+                    qPrintable(m_option.messagePrefix()),
+                    name.toLatin1().data());
             continue;
         }
 
@@ -895,7 +901,9 @@ void WriteInitialization::addButtonGroup(const DomWidget *buttonNode, const QStr
         DomButtonGroup *newGroup = new DomButtonGroup;
         newGroup->setAttributeName(attributeName);
         group = newGroup;
-        fprintf(stderr, "Warning: Creating button group `%s'\n", attributeName.toLatin1().data());
+        fprintf(stderr, "%s: Warning: Creating button group `%s'\n",
+                qPrintable(m_option.messagePrefix()),
+                attributeName.toLatin1().data());
     }
     const QString groupName = m_driver->findOrInsertButtonGroup(group);
     // Create on demand
@@ -1163,7 +1171,9 @@ void WriteInitialization::acceptActionRef(DomActionRef *node)
             return;
         }
     } else if (!(m_driver->actionByName(actionName) || isSeparator)) {
-        fprintf(stderr, "Warning: action `%s' not declared\n", actionName.toLatin1().data());
+        fprintf(stderr, "%s: Warning: action `%s' not declared\n",
+                qPrintable(m_option.messagePrefix()),
+                actionName.toLatin1().data());
         return;
     }
 
@@ -1853,7 +1863,9 @@ void WriteInitialization::acceptTabStops(DomTabStops *tabStops)
         const QString name = l.at(i);
 
         if (!m_registeredWidgets.contains(name)) {
-            fprintf(stderr, "'%s' isn't a valid widget\n", name.toLatin1().data());
+            fprintf(stderr, "%s: Warning: Tab-stop assignment: '%s' is not a valid widget.\n",
+                    qPrintable(m_option.messagePrefix()),
+                    name.toLatin1().data());
             continue;
         }
 
@@ -2083,7 +2095,8 @@ QString WriteInitialization::pixCall(const DomProperty *p) const
         s = p->elementPixmap()->text();
         break;
     default:
-        qWarning() << "Warning: Unknown icon format encountered. The ui-file was generated with a too-recent version of Designer.";
+        qWarning("%s: Warning: Unknown icon format encountered. The ui-file was generated with a too-recent version of Designer.",
+                 qPrintable(m_option.messagePrefix()));
         return QLatin1String("QIcon()");
         break;
     }
@@ -2573,7 +2586,7 @@ void WriteInitialization::initializeQ3SqlDataTable(DomWidget *w)
     }
 
     if (table.isEmpty() || connection.isEmpty()) {
-        fprintf(stderr, "invalid database connection\n");
+        fprintf(stderr, "%s: Warning: Invalid database connection\n", qPrintable(m_option.messagePrefix()));
         return;
     }
 
@@ -2613,7 +2626,7 @@ void WriteInitialization::initializeQ3SqlDataBrowser(DomWidget *w)
     }
 
     if (table.isEmpty() || connection.isEmpty()) {
-        fprintf(stderr, "invalid database connection\n");
+        fprintf(stderr, "%s: Warning: Invalid database connection\n", qPrintable(m_option.messagePrefix()));
         return;
     }
 
diff --git a/src/tools/uic/driver.cpp b/src/tools/uic/driver.cpp
index 676388f..65d63e0 100644
--- a/src/tools/uic/driver.cpp
+++ b/src/tools/uic/driver.cpp
@@ -178,7 +178,10 @@ QString Driver::unique(const QString &instanceName, const QString &className)
     }
 
     if (alreadyUsed && className.size()) {
-        fprintf(stderr, "Warning: name %s is already used\n", qPrintable(instanceName));
+        fprintf(stderr, "%s: Warning: The name '%s' (%s) is already in use, defaulting to '%s'.\n",
+                qPrintable(m_option.messagePrefix()),
+                qPrintable(instanceName), qPrintable(className),
+                qPrintable(name));
     }
 
     m_nameRepository.insert(name, true);
diff --git a/src/tools/uic/option.h b/src/tools/uic/option.h
index 8556728..011a8f8 100644
--- a/src/tools/uic/option.h
+++ b/src/tools/uic/option.h
@@ -43,6 +43,7 @@
 #define OPTION_H
 
 #include <QtCore/QString>
+#include <QtCore/QDir>
 
 QT_BEGIN_NAMESPACE
 
@@ -91,6 +92,13 @@ struct Option
           generator(CppGenerator),
           prefix(QLatin1String("Ui_"))
     { indent.fill(QLatin1Char(' '), 4); }
+
+    QString messagePrefix() const
+    {
+        return inputFile.isEmpty() ?
+               QString(QLatin1String("stdin")) :
+               QDir::toNativeSeparators(inputFile);
+    }
 };
 
 QT_END_NAMESPACE
diff --git a/tests/auto/qdir/tst_qdir.cpp b/tests/auto/qdir/tst_qdir.cpp
index c8c835f..fb83a5a 100644
--- a/tests/auto/qdir/tst_qdir.cpp
+++ b/tests/auto/qdir/tst_qdir.cpp
@@ -167,6 +167,8 @@ private slots:
     void longFileName();
 
     void updateFileLists();
+
+    void detachingOperations();
 };
 
 // Testing get/set functions
@@ -1541,6 +1543,103 @@ void tst_QDir::updateFileLists()
     QCOMPARE(dir.entryList(), QStringList() << "sub-dir1" << "sub-dir2" << "file1.txt");
 }
 
+void tst_QDir::detachingOperations()
+{
+    QString const defaultPath(".");
+    QStringList const defaultNameFilters = QStringList("*");
+    QDir::SortFlags const defaultSorting = QDir::Name | QDir::IgnoreCase;
+    QDir::Filters const defaultFilter = QDir::AllEntries;
+
+    QString const path1("..");
+    QString const path2("./foo");
+    QStringList const nameFilters = QStringList(QString("*.txt"));
+    QDir::SortFlags const sorting = QDir::Name | QDir::DirsLast | QDir::Reversed;
+    QDir::Filters const filter = QDir::Writable;
+
+    QDir dir1;
+
+    QCOMPARE(dir1.path(), defaultPath);
+    QCOMPARE(dir1.filter(), defaultFilter);
+    QCOMPARE(dir1.nameFilters(), defaultNameFilters);
+    QCOMPARE(dir1.sorting(), defaultSorting);
+
+    dir1.setPath(path1);
+    QCOMPARE(dir1.path(), path1);
+    QCOMPARE(dir1.filter(), defaultFilter);
+    QCOMPARE(dir1.nameFilters(), defaultNameFilters);
+    QCOMPARE(dir1.sorting(), defaultSorting);
+
+    dir1.setFilter(filter);
+    QCOMPARE(dir1.path(), path1);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), defaultNameFilters);
+    QCOMPARE(dir1.sorting(), defaultSorting);
+
+    dir1.setNameFilters(nameFilters);
+    QCOMPARE(dir1.path(), path1);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), defaultSorting);
+
+    dir1.setSorting(sorting);
+    QCOMPARE(dir1.path(), path1);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), sorting);
+
+    dir1.setPath(path2);
+    QCOMPARE(dir1.path(), path2);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), sorting);
+
+    {
+        QDir dir2(dir1);
+        QCOMPARE(dir2.path(), path2);
+        QCOMPARE(dir2.filter(), filter);
+        QCOMPARE(dir2.nameFilters(), nameFilters);
+        QCOMPARE(dir2.sorting(), sorting);
+    }
+
+    {
+        QDir dir2;
+        QCOMPARE(dir2.path(), defaultPath);
+        QCOMPARE(dir2.filter(), defaultFilter);
+        QCOMPARE(dir2.nameFilters(), defaultNameFilters);
+        QCOMPARE(dir2.sorting(), defaultSorting);
+
+        dir2 = dir1;
+        QCOMPARE(dir2.path(), path2);
+        QCOMPARE(dir2.filter(), filter);
+        QCOMPARE(dir2.nameFilters(), nameFilters);
+        QCOMPARE(dir2.sorting(), sorting);
+
+        dir2 = path1;
+        QCOMPARE(dir2.path(), path1);
+        QCOMPARE(dir2.filter(), filter);
+        QCOMPARE(dir2.nameFilters(), nameFilters);
+        QCOMPARE(dir2.sorting(), sorting);
+    }
+
+    dir1.refresh();
+    QCOMPARE(dir1.path(), path2);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), sorting);
+
+    QString const currentPath = QDir::currentPath();
+    QVERIFY(dir1.cd(currentPath));
+    QCOMPARE(dir1.path(), currentPath);
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), sorting);
+
+    QVERIFY(dir1.cdUp());
+    QCOMPARE(dir1.filter(), filter);
+    QCOMPARE(dir1.nameFilters(), nameFilters);
+    QCOMPARE(dir1.sorting(), sorting);
+}
+
 QTEST_MAIN(tst_QDir)
 #include "tst_qdir.moc"
 
diff --git a/tests/auto/qfileinfo/tst_qfileinfo.cpp b/tests/auto/qfileinfo/tst_qfileinfo.cpp
index 93b1891..208110a 100644
--- a/tests/auto/qfileinfo/tst_qfileinfo.cpp
+++ b/tests/auto/qfileinfo/tst_qfileinfo.cpp
@@ -172,6 +172,8 @@ private slots:
     void equalOperator() const;
     void equalOperatorWithDifferentSlashes() const;
     void notEqualOperator() const;
+
+    void detachingOperations();
 };
 
 tst_QFileInfo::tst_QFileInfo()
@@ -228,13 +230,13 @@ void tst_QFileInfo::copy()
     QFileInfo info2(info);
     QFileInfoPrivate *privateInfo = getPrivate(info);
     QFileInfoPrivate *privateInfo2 = getPrivate(info2);
-    QCOMPARE(privateInfo->data, privateInfo2->data);
+    QCOMPARE(privateInfo, privateInfo2);
 
     //operator =
     QFileInfo info3 = info;
     QFileInfoPrivate *privateInfo3 = getPrivate(info3);
-    QCOMPARE(privateInfo->data, privateInfo3->data);
-    QCOMPARE(privateInfo2->data, privateInfo3->data);
+    QCOMPARE(privateInfo, privateInfo3);
+    QCOMPARE(privateInfo2, privateInfo3);
 
     //refreshing info3 will detach it
     QFile file(info.absoluteFilePath());
@@ -256,9 +258,10 @@ void tst_QFileInfo::copy()
     QTest::qWait(5000);
 #endif
     info3.refresh();
-    QVERIFY(privateInfo->data != privateInfo3->data);
-    QVERIFY(privateInfo2->data != privateInfo3->data);
-    QCOMPARE(privateInfo->data, privateInfo2->data);
+    privateInfo3 = getPrivate(info3);
+    QVERIFY(privateInfo != privateInfo3);
+    QVERIFY(privateInfo2 != privateInfo3);
+    QCOMPARE(privateInfo, privateInfo2);
 }
 
 void tst_QFileInfo::isFile_data()
@@ -1182,8 +1185,8 @@ void tst_QFileInfo::isLocalFs()
 
     QFileInfo info(path);
     QFileInfoPrivate *privateInfo = getPrivate(info);
-    QVERIFY(privateInfo->data->fileEngine);
-    QCOMPARE(bool(privateInfo->data->fileEngine->fileFlags(QAbstractFileEngine::LocalDiskFlag)
+    QVERIFY(privateInfo->fileEngine);
+    QCOMPARE(bool(privateInfo->fileEngine->fileFlags(QAbstractFileEngine::LocalDiskFlag)
                   & QAbstractFileEngine::LocalDiskFlag), isLocalFs);
 }
 
@@ -1376,5 +1379,51 @@ void tst_QFileInfo::notEqualOperator() const
     QVERIFY(QFileInfo() != QFileInfo());
 }
 
+void tst_QFileInfo::detachingOperations()
+{
+    QFileInfo info1;
+    QVERIFY(info1.caching());
+    info1.setCaching(false);
+
+    {
+        QFileInfo info2 = info1;
+
+        QVERIFY(!info1.caching());
+        QVERIFY(!info2.caching());
+
+        info2.setCaching(true);
+        QVERIFY(info2.caching());
+
+        info1.setFile("foo");
+        QVERIFY(!info1.caching());
+    }
+
+    {
+        QFile file("foo");
+        info1.setFile(file);
+        QVERIFY(!info1.caching());
+    }
+
+    info1.setFile(QDir(), "foo");
+    QVERIFY(!info1.caching());
+
+    {
+        QFileInfo info3;
+        QVERIFY(info3.caching());
+
+        info3 = info1;
+        QVERIFY(!info3.caching());
+    }
+
+    info1.refresh();
+    QVERIFY(!info1.caching());
+
+    QVERIFY(info1.makeAbsolute());
+    QVERIFY(!info1.caching());
+
+    info1.detach();
+    QVERIFY(!info1.caching());
+}
+
 QTEST_MAIN(tst_QFileInfo)
 #include "tst_qfileinfo.moc"
diff --git a/tests/auto/qurl/tst_qurl.cpp b/tests/auto/qurl/tst_qurl.cpp
index 370bd13..b5236e5 100644
--- a/tests/auto/qurl/tst_qurl.cpp
+++ b/tests/auto/qurl/tst_qurl.cpp
@@ -2266,7 +2266,9 @@ void tst_QUrl::ipv6()
 
     QCOMPARE(url.isValid(), isValid);
     if (url.isValid()) {
-	QCOMPARE(url.toString(), ipv6Auth);
+        QCOMPARE(url.toString(), ipv6Auth);
+        url.setHost(url.host());
+        QCOMPARE(url.toString(), ipv6Auth);
     }
 };
 
@@ -2290,6 +2292,8 @@ void tst_QUrl::ipv6_2()
 
     QUrl url(input);
     QCOMPARE(url.toString(), output);
+    url.setHost(url.host());
+    QCOMPARE(url.toString(), output);
 }
 
 void tst_QUrl::moreIpv6()
diff --git a/tools/configure/configureapp.cpp b/tools/configure/configureapp.cpp
index 0d0729b..6e66742 100644
--- a/tools/configure/configureapp.cpp
+++ b/tools/configure/configureapp.cpp
@@ -2681,11 +2681,11 @@ void Configure::generateOutputVars()
             qtConfig += "audio-backend";
     }
 
+    QString dst = buildPath + "/mkspecs/modules/qt_webkit_version.pri";
+    QFile::remove(dst);
     if (dictionary["WEBKIT"] == "yes") {
         // This include takes care of adding "webkit" to QT_CONFIG.
         QString src = sourcePath + "/src/3rdparty/webkit/WebKit/qt/qt_webkit_version.pri";
-        QString dst = buildPath + "/mkspecs/modules/qt_webkit_version.pri";
-        QFile::remove(dst);
         QFile::copy(src, dst);
     }
 
diff --git a/tools/designer/src/components/formeditor/formeditor.qrc b/tools/designer/src/components/formeditor/formeditor.qrc
index 6510814..42724dd 100644
--- a/tools/designer/src/components/formeditor/formeditor.qrc
+++ b/tools/designer/src/components/formeditor/formeditor.qrc
@@ -113,7 +113,6 @@
     <file>images/widgets/vslider.png</file>
     <file>images/widgets/vspacer.png</file>
     <file>images/widgets/widget.png</file>
-    <file>images/widgets/widget.png</file>
     <file>images/widgets/widgetstack.png</file>
     <file>images/widgets/wizard.png</file>
     <file>images/win/adjustsize.png</file>