Merge ../../qt/master

Conflicts:
	tests/auto/tests.xml

17 files changed, 317 insertions, 252 deletions

diff --git a/src/corelib/animation/qabstractanimation.cpp b/src/corelib/animation/qabstractanimation.cpp
index b7afd9f..f5a9d16 100644
--- a/src/corelib/animation/qabstractanimation.cpp
+++ b/src/corelib/animation/qabstractanimation.cpp
@@ -161,7 +161,9 @@
 
 QT_BEGIN_NAMESPACE
 
+#ifndef QT_NO_THREAD
 Q_GLOBAL_STATIC(QThreadStorage<QUnifiedTimer *>, unifiedTimer)
+#endif
 
 QUnifiedTimer::QUnifiedTimer() :
     QObject(), lastTick(0), timingInterval(DEFAULT_TIMER_INTERVAL),
@@ -173,12 +175,17 @@ QUnifiedTimer::QUnifiedTimer() :
 QUnifiedTimer *QUnifiedTimer::instance()
 {
     QUnifiedTimer *inst;
+#ifndef QT_NO_THREAD
     if (!unifiedTimer()->hasLocalData()) {
         inst = new QUnifiedTimer;
         unifiedTimer()->setLocalData(inst);
     } else {
         inst = unifiedTimer()->localData();
     }
+#else
+    static QUnifiedTimer unifiedTimer;
+    inst = &unifiedTimer;
+#endif
     return inst;
 }
 
diff --git a/src/corelib/animation/qpropertyanimation.cpp b/src/corelib/animation/qpropertyanimation.cpp
index eec5b30..37b79ba 100644
--- a/src/corelib/animation/qpropertyanimation.cpp
+++ b/src/corelib/animation/qpropertyanimation.cpp
@@ -118,7 +118,9 @@ void QPropertyAnimationPrivate::updateMetaProperty()
         propertyType = QVariant::Invalid;
         if (!targetValue->dynamicPropertyNames().contains(propertyName))
             qWarning("QPropertyAnimation: you're trying to animate a non-existing property %s of your QObject", propertyName.constData());
-    }
+    } else if (!targetValue->metaObject()->property(propertyIndex).isWritable()) {
+        qWarning("QPropertyAnimation: you're trying to animate the non-writable property %s of your QObject", propertyName.constData());
+	}
 }
 
 void QPropertyAnimationPrivate::updateProperty(const QVariant &newValue)
@@ -256,7 +258,8 @@ void QPropertyAnimation::updateState(QAbstractAnimation::State newState,
     Q_D(QPropertyAnimation);
 
     if (!d->target && oldState == Stopped) {
-        qWarning("QPropertyAnimation::updateState: Changing state of an animation without target");
+        qWarning("QPropertyAnimation::updateState (%s): Changing state of an animation without target",
+                 d->propertyName.constData());
         return;
     }
 
@@ -264,7 +267,9 @@ void QPropertyAnimation::updateState(QAbstractAnimation::State newState,
 
     QPropertyAnimation *animToStop = 0;
     {
+#ifndef QT_NO_THREAD
         QMutexLocker locker(QMutexPool::globalInstanceGet(&staticMetaObject));
+#endif
         typedef QPair<QObject *, QByteArray> QPropertyAnimationPair;
         typedef QHash<QPropertyAnimationPair, QPropertyAnimation*> QPropertyAnimationHash;
         static QPropertyAnimationHash hash;
@@ -279,10 +284,16 @@ void QPropertyAnimation::updateState(QAbstractAnimation::State newState,
             if (oldState == Stopped) {
                 d->setDefaultStartEndValue(d->targetValue->property(d->propertyName.constData()));
                 //let's check if we have a start value and an end value
-                if (!startValue().isValid() && (d->direction == Backward || !d->defaultStartEndValue.isValid()))
-                    qWarning("QPropertyAnimation::updateState: starting an animation without start value");
-                if (!endValue().isValid() && (d->direction == Forward || !d->defaultStartEndValue.isValid()))
-                    qWarning("QPropertyAnimation::updateState: starting an animation without end value");
+                if (!startValue().isValid() && (d->direction == Backward || !d->defaultStartEndValue.isValid())) {
+                    qWarning("QPropertyAnimation::updateState (%s, %s, %s): starting an animation without start value",
+                             d->propertyName.constData(), d->target.data()->metaObject()->className(),
+                             qPrintable(d->target.data()->objectName()));
+                }
+                if (!endValue().isValid() && (d->direction == Forward || !d->defaultStartEndValue.isValid())) {
+                    qWarning("QPropertyAnimation::updateState (%s, %s, %s): starting an animation without end value",
+                             d->propertyName.constData(), d->target.data()->metaObject()->className(),
+                             qPrintable(d->target.data()->objectName()));
+                }
             }
         } else if (hash.value(key) == this) {
             hash.remove(key);
diff --git a/src/corelib/animation/qvariantanimation.cpp b/src/corelib/animation/qvariantanimation.cpp
index 115edbe..173802d 100644
--- a/src/corelib/animation/qvariantanimation.cpp
+++ b/src/corelib/animation/qvariantanimation.cpp
@@ -431,7 +431,9 @@ void QVariantAnimation::registerInterpolator(QVariantAnimation::Interpolator fun
 {
     // will override any existing interpolators
     QInterpolatorVector *interpolators = registeredInterpolators();
+#ifndef QT_NO_THREAD
     QMutexLocker locker(QMutexPool::globalInstanceGet(interpolators));
+#endif
     if (int(interpolationType) >= interpolators->count())
         interpolators->resize(int(interpolationType) + 1);
     interpolators->replace(interpolationType, func);
@@ -446,7 +448,9 @@ template<typename T> static inline QVariantAnimation::Interpolator castToInterpo
 QVariantAnimation::Interpolator QVariantAnimationPrivate::getInterpolator(int interpolationType)
 {
     QInterpolatorVector *interpolators = registeredInterpolators();
+#ifndef QT_NO_THREAD
     QMutexLocker locker(QMutexPool::globalInstanceGet(interpolators));
+#endif
     QVariantAnimation::Interpolator ret = 0;
     if (interpolationType < interpolators->count()) {
         ret = interpolators->at(interpolationType);
diff --git a/src/corelib/arch/qatomic_ia64.h b/src/corelib/arch/qatomic_ia64.h
index e015863..8c824f3 100644
--- a/src/corelib/arch/qatomic_ia64.h
+++ b/src/corelib/arch/qatomic_ia64.h
@@ -205,7 +205,7 @@ inline bool QBasicAtomicInt::deref()
 template <typename T>
 Q_INLINE_TEMPLATE T *QBasicAtomicPointer<T>::fetchAndStoreAcquire(T *newValue)
 {
-    return (T *)_InterlockedExchangePointer(&_q_value, newValue);
+    return (T *)_InterlockedExchangePointer(reinterpret_cast<void * volatile*>(&_q_value), newValue);
 }
 
 template <typename T>
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index d5cee07..b237659 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -672,8 +672,9 @@ namespace QT_NAMESPACE {}
 #      define Q_ALIGNOF(type)   __alignof__(type)
 #      define Q_TYPEOF(expr)    __typeof__(expr)
 #      define Q_DECL_ALIGN(n)   __attribute__((__aligned__(n)))
-// using CC 5.9: Warning: attribute visibility is unsupported and will be skipped..
-//#      define Q_DECL_EXPORT     __attribute__((__visibility__("default")))
+#    endif
+#    if __SUNPRO_CC >= 0x550
+#      define Q_DECL_EXPORT     __global
 #    endif
 #    if __SUNPRO_CC < 0x5a0
 #      define Q_NO_TEMPLATE_FRIENDS
@@ -2420,6 +2421,10 @@ QT3_SUPPORT Q_CORE_EXPORT const char *qInstallPathSysconf();
 //enabling new graphics resources
 #define QT_SYMBIAN_SUPPORTS_SGIMAGE
 #define QT_SYMBIAN_SUPPORTS_ADVANCED_POINTER
+
+#ifdef SYMBIAN_GRAPHICS_WSERV_QT_EFFECTS
+#define Q_SYMBIAN_SEMITRANSPARENT_BG_SURFACE
+#endif
 #endif
 
 
diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp
index 6395cc7..728c316 100644
--- a/src/corelib/io/qfile.cpp
+++ b/src/corelib/io/qfile.cpp
@@ -643,13 +643,14 @@ QFile::remove()
         qWarning("QFile::remove: Empty or null file name");
         return false;
     }
+    unsetError();
     close();
     if(error() == QFile::NoError) {
         if(fileEngine()->remove()) {
             unsetError();
             return true;
         }
-        d->setError(QFile::RemoveError, fileEngine()->errorString());
+        d->setError(QFile::RemoveError, d->fileEngine->errorString());
     }
     return false;
 }
@@ -703,7 +704,7 @@ QFile::rename(const QString &newName)
         if (fileEngine()->rename(newName)) {
             unsetError();
             // engine was able to handle the new name so we just reset it
-            fileEngine()->setFileName(newName);
+            d->fileEngine->setFileName(newName);
             d->fileName = newName;
             return true;
         }
@@ -739,7 +740,7 @@ QFile::rename(const QString &newName)
                 if (error) {
                     out.remove();
                 } else {
-                    fileEngine()->setFileName(newName);
+                    d->fileEngine->setFileName(newName);
                     setPermissions(permissions());
                     unsetError();
                     setFileName(newName);
@@ -804,7 +805,7 @@ QFile::link(const QString &linkName)
         unsetError();
         return true;
     }
-    d->setError(QFile::RenameError, fileEngine()->errorString());
+    d->setError(QFile::RenameError, d->fileEngine->errorString());
     return false;
 }
 
@@ -993,10 +994,10 @@ bool QFile::open(OpenMode mode)
             seek(size());
         return true;
     }
-    QFile::FileError err = fileEngine()->error();
+    QFile::FileError err = d->fileEngine->error();
     if(err == QFile::UnspecifiedError)
         err = QFile::OpenError;
-    d->setError(err, fileEngine()->errorString());
+    d->setError(err, d->fileEngine->errorString());
     return false;
 }
 
@@ -1151,12 +1152,11 @@ bool QFile::open(int fd, OpenMode mode)
 int
 QFile::handle() const
 {
-    if (!isOpen())
+    Q_D(const QFile);
+    if (!isOpen() || !d->fileEngine)
         return -1;
 
-    if (QAbstractFileEngine *engine = fileEngine())
-        return engine->handle();
-    return -1;
+    return d->fileEngine->handle();
 }
 
 /*!
@@ -1188,13 +1188,12 @@ QFile::handle() const
 uchar *QFile::map(qint64 offset, qint64 size, MemoryMapFlags flags)
 {
     Q_D(QFile);
-    QAbstractFileEngine *engine = fileEngine();
-    if (engine
-        && engine->supportsExtension(QAbstractFileEngine::MapExtension)) {
+    if (fileEngine()
+            && d->fileEngine->supportsExtension(QAbstractFileEngine::MapExtension)) {
         unsetError();
-        uchar *address = engine->map(offset, size, flags);
+        uchar *address = d->fileEngine->map(offset, size, flags);
         if (address == 0)
-            d->setError(engine->error(), engine->errorString());
+            d->setError(d->fileEngine->error(), d->fileEngine->errorString());
         return address;
     }
     return 0;
@@ -1211,13 +1210,12 @@ uchar *QFile::map(qint64 offset, qint64 size, MemoryMapFlags flags)
 bool QFile::unmap(uchar *address)
 {
     Q_D(QFile);
-    QAbstractFileEngine *engine = fileEngine();
-    if (engine
-        && engine->supportsExtension(QAbstractFileEngine::UnMapExtension)) {
+    if (fileEngine()
+        && d->fileEngine->supportsExtension(QAbstractFileEngine::UnMapExtension)) {
         unsetError();
-        bool success = engine->unmap(address);
+        bool success = d->fileEngine->unmap(address);
         if (!success)
-            d->setError(engine->error(), engine->errorString());
+            d->setError(d->fileEngine->error(), d->fileEngine->errorString());
         return success;
     }
     return false;
@@ -1250,13 +1248,14 @@ QFile::resize(qint64 sz)
     Q_D(QFile);
     if (!d->ensureFlushed())
         return false;
-    if (isOpen() && fileEngine()->pos() > sz)
+    fileEngine();
+    if (isOpen() && d->fileEngine->pos() > sz)
         seek(sz);
-    if(fileEngine()->setSize(sz)) {
+    if(d->fileEngine->setSize(sz)) {
         unsetError();
         return true;
     }
-    d->setError(QFile::ResizeError, fileEngine()->errorString());
+    d->setError(QFile::ResizeError, d->fileEngine->errorString());
     return false;
 }
 
@@ -1320,7 +1319,7 @@ QFile::setPermissions(Permissions permissions)
         unsetError();
         return true;
     }
-    d->setError(QFile::PermissionsError, fileEngine()->errorString());
+    d->setError(QFile::PermissionsError, d->fileEngine->errorString());
     return false;
 }
 
@@ -1353,23 +1352,27 @@ bool
 QFile::flush()
 {
     Q_D(QFile);
+    if (!d->fileEngine) {
+        qWarning("QFile::flush: No file engine. Is IODevice open?");
+        return false;
+    }
+
     if (!d->writeBuffer.isEmpty()) {
         qint64 size = d->writeBuffer.size();
-        if (_qfile_writeData(d->fileEngine ? d->fileEngine : fileEngine(),
-                             &d->writeBuffer) != size) {
-            QFile::FileError err = fileEngine()->error();
+        if (_qfile_writeData(d->fileEngine, &d->writeBuffer) != size) {
+            QFile::FileError err = d->fileEngine->error();
             if(err == QFile::UnspecifiedError)
                 err = QFile::WriteError;
-            d->setError(err, fileEngine()->errorString());
+            d->setError(err, d->fileEngine->errorString());
             return false;
         }
     }
 
-    if (!fileEngine()->flush()) {
-        QFile::FileError err = fileEngine()->error();
+    if (!d->fileEngine->flush()) {
+        QFile::FileError err = d->fileEngine->error();
         if(err == QFile::UnspecifiedError)
             err = QFile::WriteError;
-        d->setError(err, fileEngine()->errorString());
+        d->setError(err, d->fileEngine->errorString());
         return false;
     }
     return true;
@@ -1394,10 +1397,10 @@ QFile::close()
     d->writeBuffer.clear();
 
     // keep earlier error from flush
-    if (fileEngine()->close() && flushed)
+    if (d->fileEngine->close() && flushed)
         unsetError();
     else if (flushed)
-        d->setError(fileEngine()->error(), fileEngine()->errorString());
+        d->setError(d->fileEngine->error(), d->fileEngine->errorString());
 }
 
 /*!
@@ -1450,10 +1453,10 @@ bool QFile::atEnd() const
         return false;
 
     // If the file engine knows best, say what it says.
-    if (fileEngine()->supportsExtension(QAbstractFileEngine::AtEndExtension)) {
+    if (d->fileEngine->supportsExtension(QAbstractFileEngine::AtEndExtension)) {
         // Check if the file engine supports AtEndExtension, and if it does,
         // check if the file engine claims to be at the end.
-        return fileEngine()->atEnd();
+        return d->fileEngine->atEnd();
     }
 
     // Fall back to checking how much is available (will stat files).
@@ -1475,11 +1478,11 @@ bool QFile::seek(qint64 off)
     if (!d->ensureFlushed())
         return false;
 
-    if (!fileEngine()->seek(off) || !QIODevice::seek(off)) {
-        QFile::FileError err = fileEngine()->error();
+    if (!d->fileEngine->seek(off) || !QIODevice::seek(off)) {
+        QFile::FileError err = d->fileEngine->error();
         if(err == QFile::UnspecifiedError)
             err = QFile::PositionError;
-        d->setError(err, fileEngine()->errorString());
+        d->setError(err, d->fileEngine->errorString());
         return false;
     }
     unsetError();
@@ -1495,8 +1498,8 @@ qint64 QFile::readLineData(char *data, qint64 maxlen)
     if (!d->ensureFlushed())
         return -1;
 
-    if (fileEngine()->supportsExtension(QAbstractFileEngine::FastReadLineExtension))
-        return fileEngine()->readLine(data, maxlen);
+    if (d->fileEngine->supportsExtension(QAbstractFileEngine::FastReadLineExtension))
+        return d->fileEngine->readLine(data, maxlen);
 
     // Fall back to QIODevice's readLine implementation if the engine
     // cannot do it faster.
@@ -1514,18 +1517,14 @@ qint64 QFile::readData(char *data, qint64 len)
     if (!d->ensureFlushed())
         return -1;
 
-    qint64 ret = -1;
-    qint64 read = fileEngine()->read(data, len);
-    if (read != -1)
-        ret = read;
-
-    if(ret < 0) {
-        QFile::FileError err = fileEngine()->error();
+    qint64 read = d->fileEngine->read(data, len);
+    if(read < 0) {
+        QFile::FileError err = d->fileEngine->error();
         if(err == QFile::UnspecifiedError)
             err = QFile::ReadError;
-        d->setError(err, fileEngine()->errorString());
+        d->setError(err, d->fileEngine->errorString());
     }
-    return ret;
+    return read;
 }
 
 /*!
@@ -1605,13 +1604,12 @@ QFile::writeData(const char *data, qint64 len)
     // Write directly to the engine if the block size is larger than
     // the write buffer size.
     if (!buffered || len > QFILE_WRITEBUFFER_SIZE) {
-        QAbstractFileEngine *fe = d->fileEngine ? d->fileEngine : fileEngine();
-        qint64 ret = fe->write(data, len);
+        qint64 ret = d->fileEngine->write(data, len);
         if(ret < 0) {
-            QFile::FileError err = fileEngine()->error();
+            QFile::FileError err = d->fileEngine->error();
             if(err == QFile::UnspecifiedError)
                 err = QFile::WriteError;
-            d->setError(err, fileEngine()->errorString());
+            d->setError(err, d->fileEngine->errorString());
         }
         return ret;
     }
diff --git a/src/corelib/io/qfileinfo.cpp b/src/corelib/io/qfileinfo.cpp
index b4437db..625098e 100644
--- a/src/corelib/io/qfileinfo.cpp
+++ b/src/corelib/io/qfileinfo.cpp
@@ -41,12 +41,8 @@
 
 #include "qplatformdefs.h"
 #include "qfileinfo.h"
-#include "qdatetime.h"
-#include "qabstractfileengine.h"
 #include "qfsfileengine_p.h"
 #include "qglobal.h"
-#include "qatomic.h"
-#include "qhash.h"
 #include "qdir.h"
 #include "qfileinfo_p.h"
 
@@ -54,7 +50,7 @@ QT_BEGIN_NAMESPACE
 
 QFileInfoPrivate::QFileInfoPrivate(const QFileInfo *copy)
 {
-    if(copy) {
+    if (copy) {
         copy->d_func()->data->ref.ref();
         data = copy->d_func()->data;
     } else {
@@ -81,7 +77,8 @@ void QFileInfoPrivate::initFileEngine(const QString &file)
 
 bool QFileInfoPrivate::hasAccess(Access access) const
 {
-    if (!(getFileFlags(QAbstractFileEngine::FileInfoAll) & QAbstractFileEngine::LocalDiskFlag)) {
+    if (!(getFileFlags(QAbstractFileEngine::PermsMask
+                       | QAbstractFileEngine::LocalDiskFlag) & QAbstractFileEngine::LocalDiskFlag)) {
         switch (access) {
         case ReadAccess:
             return getFileFlags(QAbstractFileEngine::ReadUserPerm);
@@ -129,86 +126,104 @@ void QFileInfoPrivate::detach()
 
 QString QFileInfoPrivate::getFileName(QAbstractFileEngine::FileName name) const
 {
-    if(data->cache_enabled && !data->fileNames[(int)name].isNull())
+    if (data->cache_enabled && !data->fileNames[(int)name].isNull())
         return data->fileNames[(int)name];
     QString ret = data->fileEngine->fileName(name);
-    if(data->cache_enabled)
+    if (ret.isNull())
+        ret = QLatin1String("");
+    if (data->cache_enabled)
         data->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 (ret.isNull())
+        ret = QLatin1String("");
+    if (data->cache_enabled)
+        data->fileOwners[(int)own] = ret;
+    return ret;
+}
+
 uint QFileInfoPrivate::getFileFlags(QAbstractFileEngine::FileFlags request) const
 {
-    // We split the testing into tests for for LinkType, BundleType and the rest.
+    // We split the testing into tests for for LinkType, BundleType, PermsMask
+    // and the rest.
+    // Tests for file permissions on Windows can be slow, expecially on network
+    // paths and NTFS drives.
     // In order to determine if a file is a symlink or not, we have to lstat().
     // If we're not interested in that information, we might as well avoid one
     // extra syscall. Bundle detecton on Mac can be slow, expecially on network
     // paths, so we separate out that as well.
 
-    QAbstractFileEngine::FileFlags flags;
-    if (!data->getCachedFlag(CachedFileFlags)) {
-        QAbstractFileEngine::FileFlags req = QAbstractFileEngine::FileInfoAll;
-        req &= (~QAbstractFileEngine::LinkType);
-        req &= (~QAbstractFileEngine::BundleType);
+    QAbstractFileEngine::FileFlags req = 0;
+    uint cachedFlags = 0;
 
-        flags = data->fileEngine->fileFlags(req);
-        data->setCachedFlag(CachedFileFlags);
-        data->fileFlags |= uint(flags);
-    } else {
-        flags = QAbstractFileEngine::FileFlags(data->fileFlags & request);
-    }
+    if (request & (QAbstractFileEngine::FlagsMask | QAbstractFileEngine::TypesMask)) {
+        if (!data->getCachedFlag(CachedFileFlags)) {
+            req |= QAbstractFileEngine::FlagsMask;
+            req |= QAbstractFileEngine::TypesMask;
+            req &= (~QAbstractFileEngine::LinkType);
+            req &= (~QAbstractFileEngine::BundleType);
 
-    if (request & QAbstractFileEngine::LinkType) {
-        if (!data->getCachedFlag(CachedLinkTypeFlag)) {
-            QAbstractFileEngine::FileFlags linkflag;
-            linkflag = data->fileEngine->fileFlags(QAbstractFileEngine::LinkType);
+            cachedFlags |= CachedFileFlags;
+        }
 
-            data->setCachedFlag(CachedLinkTypeFlag);
-            data->fileFlags |= uint(linkflag);
-            flags |= linkflag;
+        if (request & QAbstractFileEngine::LinkType) {
+            if (!data->getCachedFlag(CachedLinkTypeFlag)) {
+                req |= QAbstractFileEngine::LinkType;
+                cachedFlags |= CachedLinkTypeFlag;
+            }
         }
-    }
 
-    if (request & QAbstractFileEngine::BundleType) {
-        if (!data->getCachedFlag(CachedBundleTypeFlag)) {
-            QAbstractFileEngine::FileFlags bundleflag;
-            bundleflag = data->fileEngine->fileFlags(QAbstractFileEngine::BundleType);
+        if (request & QAbstractFileEngine::BundleType) {
+            if (!data->getCachedFlag(CachedBundleTypeFlag)) {
+                req |= QAbstractFileEngine::BundleType;
+                cachedFlags |= CachedBundleTypeFlag;
+            }
+        }
+    }
 
-            data->setCachedFlag(CachedBundleTypeFlag);
-            data->fileFlags |= uint(bundleflag);
-            flags |= bundleflag;
+    if (request & QAbstractFileEngine::PermsMask) {
+        if (!data->getCachedFlag(CachedPerms)) {
+            req |= QAbstractFileEngine::PermsMask;
+            cachedFlags |= CachedPerms;
         }
     }
 
-    // no else branch
-    // if we had it cached, it was caught in the previous else branch
+    if (req) {
+        if (data->cache_enabled)
+            req &= (~QAbstractFileEngine::Refresh);
+        else
+            req |= QAbstractFileEngine::Refresh;
 
-    return flags & request;
+        QAbstractFileEngine::FileFlags flags = data->fileEngine->fileFlags(req);
+        data->fileFlags |= uint(flags);
+        data->setCachedFlag(cachedFlags);
+    }
+
+    return data->fileFlags & request;
 }
 
 QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request) const
 {
     if (!data->cache_enabled)
         data->clearFlags();
-    if(request == QAbstractFileEngine::CreationTime) {
-        if(data->getCachedFlag(CachedCTime))
-            return data->fileTimes[request];
-        data->setCachedFlag(CachedCTime);
-        return (data->fileTimes[request] = data->fileEngine->fileTime(request));
-    }
-    if(request == QAbstractFileEngine::ModificationTime) {
-        if(data->getCachedFlag(CachedMTime))
-            return data->fileTimes[request];
-        data->setCachedFlag(CachedMTime);
-        return (data->fileTimes[request] = data->fileEngine->fileTime(request));
+    uint cf;
+    if (request == QAbstractFileEngine::CreationTime)
+        cf = CachedCTime;
+    else if (request == QAbstractFileEngine::ModificationTime)
+        cf = CachedMTime;
+    else
+        cf = CachedATime;
+    if (!data->getCachedFlag(cf)) {
+        data->fileTimes[request] = data->fileEngine->fileTime(request);
+        data->setCachedFlag(cf);
     }
-    if(request == QAbstractFileEngine::AccessTime) {
-        if(data->getCachedFlag(CachedATime))
-            return data->fileTimes[request];
-        data->setCachedFlag(CachedATime);
-        return (data->fileTimes[request] = data->fileEngine->fileTime(request));
-    }
-    return data->fileTimes[0]; //cannot really happen
+    return data->fileTimes[request];
 }
 
 //************* QFileInfo
@@ -305,7 +320,6 @@ QDateTime &QFileInfoPrivate::getFileTime(QAbstractFileEngine::FileTime request)
 
     \sa setFile()
 */
-
 QFileInfo::QFileInfo() : d_ptr(new QFileInfoPrivate())
 {
 }
@@ -316,7 +330,6 @@ QFileInfo::QFileInfo() : d_ptr(new QFileInfoPrivate())
 
     \sa setFile(), isRelative(), QDir::setCurrent(), QDir::isRelativePath()
 */
-
 QFileInfo::QFileInfo(const QString &file) : d_ptr(new QFileInfoPrivate())
 {
     d_ptr->initFileEngine(file);
@@ -331,7 +344,6 @@ QFileInfo::QFileInfo(const QString &file) : d_ptr(new QFileInfoPrivate())
 
     \sa isRelative()
 */
-
 QFileInfo::QFileInfo(const QFile &file) : d_ptr(new QFileInfoPrivate())
 {
     d_ptr->initFileEngine(file.fileName());
@@ -349,7 +361,6 @@ QFileInfo::QFileInfo(const QFile &file) : d_ptr(new QFileInfoPrivate())
 
     \sa isRelative()
 */
-
 QFileInfo::QFileInfo(const QDir &dir, const QString &file) : d_ptr(new QFileInfoPrivate())
 {
     d_ptr->initFileEngine(dir.filePath(file));
@@ -358,7 +369,6 @@ QFileInfo::QFileInfo(const QDir &dir, const QString &file) : d_ptr(new QFileInfo
 /*!
     Constructs a new QFileInfo that is a copy of the given \a fileinfo.
 */
-
 QFileInfo::QFileInfo(const QFileInfo &fileinfo) : d_ptr(new QFileInfoPrivate(&fileinfo))
 {
 
@@ -368,7 +378,6 @@ QFileInfo::QFileInfo(const QFileInfo &fileinfo) : d_ptr(new QFileInfoPrivate(&fi
     Destroys the QFileInfo and frees its resources.
 */
 
-
 QFileInfo::~QFileInfo()
 {
 }
@@ -395,19 +404,19 @@ 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_func()->data == d->data)
         return true;
-    if(!d->data->fileEngine || !fileinfo.d_func()->data->fileEngine)
+    if (!d->data->fileEngine || !fileinfo.d_func()->data->fileEngine)
         return false;
-    if(d->data->fileEngine->caseSensitive() != fileinfo.d_func()->data->fileEngine->caseSensitive())
+    if (d->data->fileEngine->caseSensitive() != fileinfo.d_func()->data->fileEngine->caseSensitive())
         return false;
-    if(fileinfo.size() == size()) { //if the size isn't the same...
+    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()) {
-                for(int i = 0; i < file1.length(); i++) {
-                    if(file1.at(i).toLower() != file2.at(i).toLower())
+        if (file1.length() == file2.length()) {
+            if (!fileinfo.d_func()->data->fileEngine->caseSensitive()) {
+                for (int i = 0; i < file1.length(); i++) {
+                    if (file1.at(i).toLower() != file2.at(i).toLower())
                         return false;
                 }
                 return true;
@@ -441,7 +450,6 @@ bool QFileInfo::operator==(const QFileInfo &fileinfo)
 /*!
     Makes a copy of the given \a fileinfo and assigns it to this QFileInfo.
 */
-
 QFileInfo &QFileInfo::operator=(const QFileInfo &fileinfo)
 {
     Q_D(QFileInfo);
@@ -464,7 +472,6 @@ QFileInfo &QFileInfo::operator=(const QFileInfo &fileinfo)
 
     \sa isRelative(), QDir::setCurrent(), QDir::isRelativePath()
 */
-
 void QFileInfo::setFile(const QString &file)
 {
     *this = QFileInfo(file);
@@ -481,7 +488,6 @@ void QFileInfo::setFile(const QString &file)
 
     \sa isRelative()
 */
-
 void QFileInfo::setFile(const QFile &file)
 {
     *this = QFileInfo(file.fileName());
@@ -498,7 +504,6 @@ void QFileInfo::setFile(const QFile &file)
 
     \sa isRelative()
 */
-
 void QFileInfo::setFile(const QDir &dir, const QString &file)
 {
     *this = QFileInfo(dir.filePath(file));
@@ -528,25 +533,24 @@ void QFileInfo::setFile(const QDir &dir, const QString &file)
 QString QFileInfo::absoluteFilePath() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::AbsoluteName);
 }
 
 /*!
-  Returns the canonical path including the file name, i.e. an absolute
-  path without symbolic links or redundant "." or ".." elements.
+    Returns the canonical path including the file name, i.e. an absolute
+    path without symbolic links or redundant "." or ".." elements.
 
-  If the file does not exist, canonicalFilePath() returns an empty
-  string.
+    If the file does not exist, canonicalFilePath() returns an empty
+    string.
 
-  \sa filePath(), absoluteFilePath(), dir()
+    \sa filePath(), absoluteFilePath(), dir()
 */
-
 QString QFileInfo::canonicalFilePath() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::CanonicalName);
 }
@@ -569,14 +573,16 @@ QString QFileInfo::canonicalFilePath() const
 
     \sa absoluteFilePath(), path(), canonicalPath(), fileName(), isRelative()
 */
-
 QString QFileInfo::absolutePath() const
 {
     Q_D(const QFileInfo);
-    if (d->data->fileName.isEmpty())
+
+    if (!d->data->fileEngine) {
+        return QLatin1String("");
+    } else if (d->data->fileName.isEmpty()) {
         qWarning("QFileInfo::absolutePath: Constructed with empty filename");
-    if(!d->data->fileEngine)
         return QLatin1String("");
+    }
     return d->getFileName(QAbstractFileEngine::AbsolutePathName);
 }
 
@@ -588,16 +594,14 @@ QString QFileInfo::absolutePath() const
 
     \sa path(), absolutePath()
 */
-
 QString QFileInfo::canonicalPath() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::CanonicalPathName);
 }
 
-
 /*!
     Returns the file's path. This doesn't include the file name.
 
@@ -607,11 +611,10 @@ QString QFileInfo::canonicalPath() const
 
     \sa filePath(), absolutePath(), canonicalPath(), dir(), fileName(), isRelative()
 */
-
 QString QFileInfo::path() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::PathName);
 }
@@ -632,16 +635,14 @@ QString QFileInfo::path() const
 
     \sa isAbsolute()
 */
-
 bool QFileInfo::isRelative() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return true;
     return d->data->fileEngine->isRelativePath();
 }
 
-
 /*!
     Converts the file's path to an absolute path if it is not already in that form.
     Returns true to indicate that the path was converted; otherwise returns false
@@ -649,11 +650,10 @@ bool QFileInfo::isRelative() const
 
     \sa filePath(), isRelative()
 */
-
 bool QFileInfo::makeAbsolute()
 {
     Q_D(QFileInfo);
-    if(!d->data->fileEngine || !d->data->fileEngine->isRelativePath())
+    if (!d->data->fileEngine || !d->data->fileEngine->isRelativePath())
         return false;
     QString absFileName = d->getFileName(QAbstractFileEngine::AbsoluteName);
     d->initFileEngine(absFileName);
@@ -666,11 +666,10 @@ bool QFileInfo::makeAbsolute()
     \note If the file is a symlink that points to a non existing
      file, false is returned.
 */
-
 bool QFileInfo::exists() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::ExistsFlag);
 }
@@ -682,7 +681,6 @@ bool QFileInfo::exists() const
    \note On Windows CE, there might be a delay for the file system driver
     to detect changes on the file.
 */
-
 void QFileInfo::refresh()
 {
     Q_D(QFileInfo);
@@ -695,11 +693,10 @@ void QFileInfo::refresh()
 
     \sa absoluteFilePath(), canonicalFilePath(), isRelative()
 */
-
 QString QFileInfo::filePath() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::DefaultName);
 }
@@ -715,11 +712,10 @@ QString QFileInfo::filePath() const
 
     \sa isRelative(), filePath(), baseName(), extension()
 */
-
 QString QFileInfo::fileName() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BaseName);
 }
@@ -736,11 +732,10 @@ QString QFileInfo::fileName() const
 
     \sa isBundle(), filePath(), baseName(), extension()
 */
-
 QString QFileInfo::bundleName() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BundleName);
 }
@@ -761,11 +756,10 @@ QString QFileInfo::bundleName() const
 
     \sa fileName(), suffix(), completeSuffix(), completeBaseName()
 */
-
 QString QFileInfo::baseName() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::BaseName).section(QLatin1Char('.'), 0, 0);
 }
@@ -781,11 +775,10 @@ QString QFileInfo::baseName() const
 
     \sa fileName(), suffix(), completeSuffix(), baseName()
 */
-
 QString QFileInfo::completeBaseName() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     QString name = d->getFileName(QAbstractFileEngine::BaseName);
     int index = name.lastIndexOf(QLatin1Char('.'));
@@ -803,11 +796,10 @@ QString QFileInfo::completeBaseName() const
 
     \sa fileName(), suffix(), baseName(), completeBaseName()
 */
-
 QString QFileInfo::completeSuffix() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     QString fileName = d->getFileName(QAbstractFileEngine::BaseName);
     int firstDot = fileName.indexOf(QLatin1Char('.'));
@@ -831,11 +823,10 @@ QString QFileInfo::completeSuffix() const
 
     \sa fileName(), completeSuffix(), baseName(), completeBaseName()
 */
-
 QString QFileInfo::suffix() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     QString fileName = d->getFileName(QAbstractFileEngine::BaseName);
     int lastDot = fileName.lastIndexOf(QLatin1Char('.'));
@@ -846,24 +837,23 @@ QString QFileInfo::suffix() const
 
 
 /*!
-  Returns the path of the object's parent directory as a QDir object.
+    Returns the path of the object's parent directory as a QDir object.
 
-  \bold{Note:} The QDir returned always corresponds to the object's
-  parent directory, even if the QFileInfo represents a directory.
+    \bold{Note:} The QDir returned always corresponds to the object's
+    parent directory, even if the QFileInfo represents a directory.
 
-  For each of the follwing, dir() returns a QDir for
-  \c{"~/examples/191697"}.
+    For each of the follwing, dir() returns a QDir for
+    \c{"~/examples/191697"}.
 
-  \snippet doc/src/snippets/fileinfo/main.cpp 0
+    \snippet doc/src/snippets/fileinfo/main.cpp 0
 
-  For each of the follwing, dir() returns a QDir for
-  \c{"."}.
+    For each of the follwing, dir() returns a QDir for
+    \c{"."}.
 
-  \snippet doc/src/snippets/fileinfo/main.cpp 1
+    \snippet doc/src/snippets/fileinfo/main.cpp 1
 
-  \sa absolutePath(), filePath(), fileName(), isRelative(), absoluteDir()
+    \sa absolutePath(), filePath(), fileName(), isRelative(), absoluteDir()
 */
-
 QDir QFileInfo::dir() const
 {
     // ### Qt5: Maybe rename this to parentDirectory(), considering what it actually do?
@@ -875,7 +865,6 @@ QDir QFileInfo::dir() const
 
     \sa dir(), filePath(), fileName(), isRelative()
 */
-
 QDir QFileInfo::absoluteDir() const
 {
     return QDir(absolutePath());
@@ -888,7 +877,7 @@ QDir QFileInfo::absoluteDir() const
 */
 QDir QFileInfo::dir(bool absPath) const
 {
-    if(absPath)
+    if (absPath)
         return absoluteDir();
     return dir();
 }
@@ -899,11 +888,10 @@ QDir QFileInfo::dir(bool absPath) const
 
     \sa isWritable(), isExecutable(), permission()
 */
-
 bool QFileInfo::isReadable() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->hasAccess(QFileInfoPrivate::ReadAccess);
 }
@@ -913,11 +901,10 @@ bool QFileInfo::isReadable() const
 
     \sa isReadable(), isExecutable(), permission()
 */
-
 bool QFileInfo::isWritable() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->hasAccess(QFileInfoPrivate::WriteAccess);
 }
@@ -927,11 +914,10 @@ bool QFileInfo::isWritable() const
 
     \sa isReadable(), isWritable(), permission()
 */
-
 bool QFileInfo::isExecutable() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->hasAccess(QFileInfoPrivate::ExecuteAccess);
 }
@@ -945,7 +931,7 @@ bool QFileInfo::isExecutable() const
 bool QFileInfo::isHidden() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::HiddenFlag);
 }
@@ -957,11 +943,10 @@ bool QFileInfo::isHidden() const
 
     \sa isDir(), isSymLink(), isBundle()
 */
-
 bool QFileInfo::isFile() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::FileType);
 }
@@ -972,11 +957,10 @@ bool QFileInfo::isFile() const
 
     \sa isFile(), isSymLink(), isBundle()
 */
-
 bool QFileInfo::isDir() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::DirectoryType);
 }
@@ -989,11 +973,10 @@ bool QFileInfo::isDir() const
 
     \sa isDir(), isSymLink(), isFile()
 */
-
 bool QFileInfo::isBundle() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::BundleType);
 }
@@ -1015,21 +998,19 @@ bool QFileInfo::isBundle() const
 
     \sa isFile(), isDir(), symLinkTarget()
 */
-
 bool QFileInfo::isSymLink() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::LinkType);
 }
 
 /*!
-  Returns true if the object points to a directory or to a symbolic
-  link to a directory, and that directory is the root directory; otherwise
-  returns false.
+    Returns true if the object points to a directory or to a symbolic
+    link to a directory, and that directory is the root directory; otherwise
+    returns false.
 */
-
 bool QFileInfo::isRoot() const
 {
     Q_D(const QFileInfo);
@@ -1061,7 +1042,7 @@ bool QFileInfo::isRoot() const
 QString QFileInfo::readLink() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
     return d->getFileName(QAbstractFileEngine::LinkName);
 }
@@ -1076,13 +1057,12 @@ QString QFileInfo::readLink() const
 
     \sa ownerId(), group(), groupId()
 */
-
 QString QFileInfo::owner() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
-    return d->data->fileEngine->owner(QAbstractFileEngine::OwnerUser);
+    return d->getFileOwner(QAbstractFileEngine::OwnerUser);
 }
 
 /*!
@@ -1093,11 +1073,10 @@ QString QFileInfo::owner() const
 
     \sa owner(), group(), groupId()
 */
-
 uint QFileInfo::ownerId() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return 0;
     return d->data->fileEngine->ownerId(QAbstractFileEngine::OwnerUser);
 }
@@ -1112,13 +1091,12 @@ uint QFileInfo::ownerId() const
 
     \sa groupId(), owner(), ownerId()
 */
-
 QString QFileInfo::group() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QLatin1String("");
-    return d->data->fileEngine->owner(QAbstractFileEngine::OwnerGroup);
+    return d->getFileOwner(QAbstractFileEngine::OwnerGroup);
 }
 
 /*!
@@ -1129,11 +1107,10 @@ QString QFileInfo::group() const
 
     \sa group(), owner(), ownerId()
 */
-
 uint QFileInfo::groupId() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return 0;
     return d->data->fileEngine->ownerId(QAbstractFileEngine::OwnerGroup);
 }
@@ -1151,11 +1128,10 @@ uint QFileInfo::groupId() const
 
     \sa isReadable(), isWritable(), isExecutable()
 */
-
 bool QFileInfo::permission(QFile::Permissions permissions) const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return false;
     return d->getFileFlags(QAbstractFileEngine::FileFlags((int)permissions)) == (uint)permissions;
 }
@@ -1164,11 +1140,10 @@ bool QFileInfo::permission(QFile::Permissions permissions) const
     Returns the complete OR-ed together combination of
     QFile::Permissions for the file.
 */
-
 QFile::Permissions QFileInfo::permissions() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return 0;
     return QFile::Permissions(d->getFileFlags(QAbstractFileEngine::PermsMask) & QAbstractFileEngine::PermsMask);
 }
@@ -1180,13 +1155,12 @@ QFile::Permissions QFileInfo::permissions() const
 
     \sa exists()
 */
-
 qint64 QFileInfo::size() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return 0;
-    if(!d->data->getCachedFlag(QFileInfoPrivate::CachedSize)) {
+    if (!d->data->getCachedFlag(QFileInfoPrivate::CachedSize)) {
         d->data->setCachedFlag(QFileInfoPrivate::CachedSize);
         d->data->fileSize = d->data->fileEngine->size();
     }
@@ -1206,11 +1180,10 @@ qint64 QFileInfo::size() const
 
     \sa lastModified() lastRead()
 */
-
 QDateTime QFileInfo::created() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::CreationTime);
 }
@@ -1220,11 +1193,10 @@ QDateTime QFileInfo::created() const
 
     \sa created() lastRead()
 */
-
 QDateTime QFileInfo::lastModified() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::ModificationTime);
 }
@@ -1237,11 +1209,10 @@ QDateTime QFileInfo::lastModified() const
 
     \sa created() lastModified()
 */
-
 QDateTime QFileInfo::lastRead() const
 {
     Q_D(const QFileInfo);
-    if(!d->data->fileEngine)
+    if (!d->data->fileEngine)
         return QDateTime();
     return d->getFileTime(QAbstractFileEngine::AccessTime);
 }
@@ -1249,7 +1220,6 @@ QDateTime QFileInfo::lastRead() const
 /*! \internal
     Detaches all internal data.
 */
-
 void QFileInfo::detach()
 {
     Q_D(QFileInfo);
@@ -1261,7 +1231,6 @@ void QFileInfo::detach()
 
     \sa setCaching(), refresh()
 */
-
 bool QFileInfo::caching() const
 {
     Q_D(const QFileInfo);
@@ -1280,7 +1249,6 @@ bool QFileInfo::caching() const
 
     \sa refresh(), caching()
 */
-
 void QFileInfo::setCaching(bool enable)
 {
     Q_D(QFileInfo);
diff --git a/src/corelib/io/qfileinfo_p.h b/src/corelib/io/qfileinfo_p.h
index 065f860..d97a0cf 100644
--- a/src/corelib/io/qfileinfo_p.h
+++ b/src/corelib/io/qfileinfo_p.h
@@ -54,6 +54,9 @@
 //
 
 #include "qfileinfo.h"
+#include "qabstractfileengine.h"
+#include "qdatetime.h"
+#include "qatomic.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -75,35 +78,41 @@ public:
     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 };
+           CachedSize =0x08, CachedPerms=0x80 };
     struct Data {
         inline Data()
-            : ref(1), fileEngine(0), cache_enabled(1), fileSize(0)
-        { clear(); }
+            : 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), cache_enabled(copy.cache_enabled), fileSize(copy.fileSize)
-        { clear(); }
+              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(QFSFileEngine::Refresh);
+                (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;
 
         QAbstractFileEngine *fileEngine;
         mutable QString fileName;
         mutable QString fileNames[QAbstractFileEngine::NFileNames];
+        mutable QString fileOwners[2];
 
         mutable uint cachedFlags : 31;
         mutable uint cache_enabled : 1;
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index dbf422e..fdbc5ba 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -1043,12 +1043,32 @@ void QAbstractItemModelPrivate::columnsRemoved(const QModelIndex &parent,
 
 
 /*!
+    \since 4.7
+
+    \fn int QModelIndex::rowCount() const
+
+    Returns the number of children of this model index.
+
+    \sa columnCount(), parent(), child(), sibling(), model()
+*/
+
+/*!
+    \since 4.7
+
+    \fn int QModelIndex::columnCount() const
+
+    Returns the number of columns for the children of this model index.
+
+    \sa rowCount(), parent(), child(), sibling(), model()
+*/
+
+/*!
     \fn QModelIndex QModelIndex::parent() const
 
     Returns the parent of the model index, or QModelIndex() if it has no
     parent.
 
-    \sa child(), sibling(), model()
+    \sa child(), sibling(), rowCount(), columnCount(), model()
 */
 
 /*!
diff --git a/src/corelib/kernel/qabstractitemmodel.h b/src/corelib/kernel/qabstractitemmodel.h
index 63d9e6f..d91c383 100644
--- a/src/corelib/kernel/qabstractitemmodel.h
+++ b/src/corelib/kernel/qabstractitemmodel.h
@@ -68,6 +68,8 @@ public:
     inline int column() const { return c; }
     inline void *internalPointer() const { return p; }
     inline qint64 internalId() const { return reinterpret_cast<qint64>(p); }
+    inline int rowCount() const;
+    inline int columnCount() const;
     inline QModelIndex parent() const;
     inline QModelIndex sibling(int row, int column) const;
     inline QModelIndex child(int row, int column) const;
@@ -385,6 +387,12 @@ inline QModelIndex::QModelIndex(int arow, int acolumn, void *adata,
                                 const QAbstractItemModel *amodel)
     : r(arow), c(acolumn), p(adata), m(amodel) {}
 
+inline int QModelIndex::rowCount() const
+{ return m ? m->rowCount(*this) : 0; }
+
+inline int QModelIndex::columnCount() const
+{ return m ? m->columnCount(*this) : 0; }
+
 inline QModelIndex QModelIndex::parent() const
 { return m ? m->parent(*this) : QModelIndex(); }
 
diff --git a/src/corelib/kernel/qcoreevent.cpp b/src/corelib/kernel/qcoreevent.cpp
index 1b167e2..3f69b4f 100644
--- a/src/corelib/kernel/qcoreevent.cpp
+++ b/src/corelib/kernel/qcoreevent.cpp
@@ -107,13 +107,13 @@ QT_BEGIN_NAMESPACE
     \value ApplicationLayoutDirectionChange The default application layout direction has changed.
     \value ApplicationPaletteChange         The default application palette has changed.
     \value ApplicationWindowIconChange      The application's icon has changed.
-    \value CloseSoftwareInputPanel          A widget wants to close the software input panel (SIP).
     \value ChildAdded                       An object gets a child (QChildEvent).
     \value ChildInserted                    An object gets a child (QChildEvent). Qt3Support only, use ChildAdded instead.
     \value ChildPolished                    A widget child gets polished (QChildEvent).
     \value ChildRemoved                     An object loses a child (QChildEvent).
     \value Clipboard                        The clipboard contents have changed (QClipboardEvent).
     \value Close                            Widget was closed (QCloseEvent).
+    \value CloseSoftwareInputPanel          A widget wants to close the software input panel (SIP).
     \value ContentsRectChange               The margins of the widget's content rect changed.
     \value ContextMenu                      Context popup menu (QContextMenuEvent).
     \value CursorChange                     The widget's cursor has changed.
diff --git a/src/corelib/kernel/qmetaobject.cpp b/src/corelib/kernel/qmetaobject.cpp
index d391893..be1b2ae 100644
--- a/src/corelib/kernel/qmetaobject.cpp
+++ b/src/corelib/kernel/qmetaobject.cpp
@@ -492,10 +492,14 @@ static inline int indexOfMethodRelative(const QMetaObject **baseObject,
                                         const char *method,
                                         bool normalizeStringData)
 {
-    while (*baseObject) {
+    const QMetaObject *m;
+    for (m = *baseObject; m; m = *baseObject = m->d.superdata) {
         const QMetaObject *const m = *baseObject;
         int i = (MethodType == MethodSignal && priv(m->d.data)->revision >= 4)
                 ? (priv(m->d.data)->signalCount - 1) : (priv(m->d.data)->methodCount - 1);
+        if (i < 0)
+            continue;
+
         const int end = (MethodType == MethodSlot && priv(m->d.data)->revision >= 4)
                         ? (priv(m->d.data)->signalCount) : 0;
         if (!normalizeStringData) {
@@ -513,7 +517,6 @@ static inline int indexOfMethodRelative(const QMetaObject **baseObject,
                     return i;
             }
         }
-        *baseObject = m->d.superdata;
     }
     return -1;
 }
diff --git a/src/corelib/kernel/qmetaobject_p.h b/src/corelib/kernel/qmetaobject_p.h
index 4bd924e..a176149 100644
--- a/src/corelib/kernel/qmetaobject_p.h
+++ b/src/corelib/kernel/qmetaobject_p.h
@@ -130,14 +130,16 @@ struct QMetaObjectPrivate
 
 #ifndef QT_NO_QOBJECT
     //defined in qobject.cpp
+    enum DisconnectType { DisconnectAll, DisconnectOne };
     static bool connect(const QObject *sender, int signal_index,
                         const QObject *receiver, int method_index,
                         int type = 0, int *types = 0);
     static bool disconnect(const QObject *sender, int signal_index,
-                           const QObject *receiver, int method_index);
+                           const QObject *receiver, int method_index,
+                           DisconnectType = DisconnectAll);
     static inline bool disconnectHelper(QObjectPrivate::Connection *c,
                                         const QObject *receiver, int method_index,
-                                        QMutex *senderMutex);
+                                        QMutex *senderMutex, DisconnectType);
 #endif
 };
 
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp
index def9b86..761b31f 100644
--- a/src/corelib/kernel/qobject.cpp
+++ b/src/corelib/kernel/qobject.cpp
@@ -2959,7 +2959,6 @@ bool QMetaObjectPrivate::connect(const QObject *sender, int signal_index,
     return true;
 }
 
-
 /*!\internal
  */
 bool QMetaObject::disconnect(const QObject *sender, int signal_index,
@@ -2970,12 +2969,27 @@ bool QMetaObject::disconnect(const QObject *sender, int signal_index,
                                           receiver, method_index);
 }
 
+/*!\internal
+
+Disconnect a single signal connection.  If QMetaObject::connect() has been called 
+multiple times for the same sender, signal_index, receiver and method_index only 
+one of these connections will be removed.
+ */
+bool QMetaObject::disconnectOne(const QObject *sender, int signal_index,
+                                const QObject *receiver, int method_index)
+{
+    signal_index = methodIndexToSignalIndex(sender->metaObject(), signal_index);
+    return QMetaObjectPrivate::disconnect(sender, signal_index,
+                                          receiver, method_index,
+                                          QMetaObjectPrivate::DisconnectOne);
+}
+
 /*! \internal
     Helper function to remove the connection from the senders list and setting the receivers to 0
  */
 bool QMetaObjectPrivate::disconnectHelper(QObjectPrivate::Connection *c,
                                           const QObject *receiver, int method_index,
-                                          QMutex *senderMutex)
+                                          QMutex *senderMutex, DisconnectType disconnectType)
 {
     bool success = false;
     while (c) {
@@ -3001,6 +3015,9 @@ bool QMetaObjectPrivate::disconnectHelper(QObjectPrivate::Connection *c,
             c->receiver = 0;
 
             success = true;
+
+            if (disconnectType == DisconnectOne)
+                return success;
         }
         c = c->nextConnectionList;
     }
@@ -3011,7 +3028,8 @@ bool QMetaObjectPrivate::disconnectHelper(QObjectPrivate::Connection *c,
     Same as the QMetaObject::disconnect, but \a signal_index must be the result of QObjectPrivate::signalIndex
  */
 bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index,
-                                    const QObject *receiver, int method_index)
+                                    const QObject *receiver, int method_index,
+                                    DisconnectType disconnectType)
 {
     if (!sender)
         return false;
@@ -3035,7 +3053,7 @@ bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index,
         for (signal_index = -1; signal_index < connectionLists->count(); ++signal_index) {
             QObjectPrivate::Connection *c =
                 (*connectionLists)[signal_index].first;
-            if (disconnectHelper(c, receiver, method_index, senderMutex)) {
+            if (disconnectHelper(c, receiver, method_index, senderMutex, disconnectType)) {
                 success = true;
                 connectionLists->dirty = true;
             }
@@ -3043,7 +3061,7 @@ bool QMetaObjectPrivate::disconnect(const QObject *sender, int signal_index,
     } else if (signal_index < connectionLists->count()) {
         QObjectPrivate::Connection *c =
             (*connectionLists)[signal_index].first;
-        if (disconnectHelper(c, receiver, method_index, senderMutex)) {
+        if (disconnectHelper(c, receiver, method_index, senderMutex, disconnectType)) {
             success = true;
             connectionLists->dirty = true;
         }
diff --git a/src/corelib/kernel/qobjectdefs.h b/src/corelib/kernel/qobjectdefs.h
index a0d9cf3..8ed7f3f 100644
--- a/src/corelib/kernel/qobjectdefs.h
+++ b/src/corelib/kernel/qobjectdefs.h
@@ -334,6 +334,8 @@ struct Q_CORE_EXPORT QMetaObject
     // internal index-based disconnect
     static bool disconnect(const QObject *sender, int signal_index,
                            const QObject *receiver, int method_index);
+    static bool disconnectOne(const QObject *sender, int signal_index,
+                              const QObject *receiver, int method_index);
     // internal slot-name based connect
     static void connectSlotsByName(QObject *o);
 
diff --git a/src/corelib/tools/qbytearray.cpp b/src/corelib/tools/qbytearray.cpp
index ba5ef5d..5dc931b 100644
--- a/src/corelib/tools/qbytearray.cpp
+++ b/src/corelib/tools/qbytearray.cpp
@@ -538,7 +538,7 @@ QByteArray qUncompress(const uchar* data, int nbytes)
 
     forever {
         ulong alloc = len;
-        d.reset(q_check_ptr(static_cast<QByteArray::Data *>(qRealloc(d.data(), sizeof(QByteArray::Data) + alloc))));
+        d.reset(q_check_ptr(static_cast<QByteArray::Data *>(qRealloc(d.take(), sizeof(QByteArray::Data) + alloc))));
         if (!d) {
             // we are not allowed to crash here when compiling with QT_NO_EXCEPTIONS
             qWarning("qUncompress: could not allocate enough memory to uncompress data");
@@ -551,7 +551,7 @@ QByteArray qUncompress(const uchar* data, int nbytes)
         switch (res) {
         case Z_OK:
             if (len != alloc) {
-                d.reset(q_check_ptr(static_cast<QByteArray::Data *>(qRealloc(d.data(), sizeof(QByteArray::Data) + len))));
+                d.reset(q_check_ptr(static_cast<QByteArray::Data *>(qRealloc(d.take(), sizeof(QByteArray::Data) + len))));
                 if (!d) {
                     // we are not allowed to crash here when compiling with QT_NO_EXCEPTIONS
                     qWarning("qUncompress: could not allocate enough memory to uncompress data");
diff --git a/src/corelib/tools/qstringlist.cpp b/src/corelib/tools/qstringlist.cpp
index 4b0f488..e9bdf57 100644
--- a/src/corelib/tools/qstringlist.cpp
+++ b/src/corelib/tools/qstringlist.cpp
@@ -404,7 +404,17 @@ void QtPrivate::QStringList_replaceInStrings(QStringList *that, const QRegExp &r
 */
 QString QtPrivate::QStringList_join(const QStringList *that, const QString &sep)
 {
+    int totalLength = 0;
+    const int size = that->size();
+
+    for (int i = 0; i < size; ++i)
+        totalLength += that->at(i).size();
+
+    if(size > 0)
+        totalLength += sep.size() * (size - 1);
+
     QString res;
+    res.reserve(totalLength);
     for (int i = 0; i < that->size(); ++i) {
         if (i)
             res += sep;