Merge branch '4.6' of scm.dev.nokia.troll.no:qt/qt

Conflicts:
	mkspecs/common/symbian/symbian.conf
	qmake/generators/makefile.cpp
	qmake/generators/symbian/symmake.cpp
	src/3rdparty/webkit/WebCore/WebCore.pro

Conflict resolution was heavily based on manual application of commit
9cc4ae77a73bd28ff495f36f26dd87c78b76b976.

28 files changed, 162 insertions, 84 deletions

diff --git a/src/corelib/animation/qabstractanimation.cpp b/src/corelib/animation/qabstractanimation.cpp
index 2b4ab47..cedb43f 100644
--- a/src/corelib/animation/qabstractanimation.cpp
+++ b/src/corelib/animation/qabstractanimation.cpp
@@ -299,8 +299,6 @@ void QUnifiedTimer::registerRunningAnimation(QAbstractAnimation *animation)
         return;
 
     if (QAbstractAnimationPrivate::get(animation)->isPause) {
-        if (animation->duration() == -1)
-            qDebug() << "toto";
         runningPauseAnimations << animation;
     } else
         runningLeafAnimations++;
diff --git a/src/corelib/arch/sparc/arch.pri b/src/corelib/arch/sparc/arch.pri
index 3113dd3..9bb3a88 100644
--- a/src/corelib/arch/sparc/arch.pri
+++ b/src/corelib/arch/sparc/arch.pri
@@ -1,7 +1,7 @@
 #
 # SPARC architecture
 #
-*-64 {
+*-64* {
     SOURCES += $$QT_ARCH_CPP/qatomic64.s
 } 
 else {
diff --git a/src/corelib/codecs/qsimplecodec.cpp b/src/corelib/codecs/qsimplecodec.cpp
index 445565a..4cc7912 100644
--- a/src/corelib/codecs/qsimplecodec.cpp
+++ b/src/corelib/codecs/qsimplecodec.cpp
@@ -681,7 +681,7 @@ QByteArray QSimpleTextCodec::convertFromUnicode(const QChar *in, int length, Con
     int u;
     const QChar* ucp = in;
     unsigned char* rp = (unsigned char *)r.data();
-    const unsigned char* rmp = (const unsigned char *)reverseMap->data();
+    const unsigned char* rmp = (const unsigned char *)reverseMap->constData();
     int rmsize = (int) reverseMap->size();
     while(i--)
     {
diff --git a/src/corelib/codecs/qtextcodec.cpp b/src/corelib/codecs/qtextcodec.cpp
index 698ca9e..ff40af5 100644
--- a/src/corelib/codecs/qtextcodec.cpp
+++ b/src/corelib/codecs/qtextcodec.cpp
@@ -79,7 +79,7 @@
 #  endif
 #endif // QT_NO_CODECS
 #include "qlocale.h"
-#include "private/qmutexpool_p.h"
+#include "qmutex.h"
 
 #include <stdlib.h>
 #include <ctype.h>
@@ -659,13 +659,13 @@ static void setupLocaleMapper()
 #endif
 }
 
-
-static void setup()
-{
 #ifndef QT_NO_THREAD
-    QMutexLocker locker(QMutexPool::globalInstanceGet(&all));
+Q_GLOBAL_STATIC_WITH_ARGS(QMutex, textCodecsMutex, (QMutex::Recursive));
 #endif
 
+// textCodecsMutex need to be locked to enter this function
+static void setup()
+{
     if (all)
         return;
 
@@ -903,8 +903,6 @@ QTextCodec::ConverterState::~ConverterState()
 */
 
 /*!
-    \nonreentrant
-
     Constructs a QTextCodec, and gives it the highest precedence. The
     QTextCodec should always be constructed on the heap (i.e. with \c
     new). Qt takes ownership and will delete it when the application
@@ -912,6 +910,9 @@ QTextCodec::ConverterState::~ConverterState()
 */
 QTextCodec::QTextCodec()
 {
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
     all->prepend(this);
 }
@@ -929,8 +930,12 @@ QTextCodec::~QTextCodec()
     if (!destroying_is_ok)
         qWarning("QTextCodec::~QTextCodec: Called by application");
 #endif
-    if (all)
+    if (all) {
+#ifndef QT_NO_THREAD
+        QMutexLocker locker(textCodecsMutex());
+#endif
         all->removeAll(this);
+    }
 }
 
 /*!
@@ -951,6 +956,9 @@ QTextCodec *QTextCodec::codecForName(const QByteArray &name)
     if (name.isEmpty())
         return 0;
 
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
 
     for (int i = 0; i < all->size(); ++i) {
@@ -958,8 +966,8 @@ QTextCodec *QTextCodec::codecForName(const QByteArray &name)
         if (nameMatch(cursor->name(), name))
             return cursor;
         QList<QByteArray> aliases = cursor->aliases();
-        for (int i = 0; i < aliases.size(); ++i)
-            if (nameMatch(aliases.at(i), name))
+        for (int y = 0; y < aliases.size(); ++y)
+            if (nameMatch(aliases.at(y), name))
                 return cursor;
     }
 
@@ -973,6 +981,9 @@ QTextCodec *QTextCodec::codecForName(const QByteArray &name)
 */
 QTextCodec* QTextCodec::codecForMib(int mib)
 {
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
 
     // Qt 3 used 1000 (mib for UCS2) as its identifier for the utf16 codec. Map
@@ -1001,6 +1012,9 @@ QTextCodec* QTextCodec::codecForMib(int mib)
 */
 QList<QByteArray> QTextCodec::availableCodecs()
 {
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
 
     QList<QByteArray> codecs;
@@ -1008,6 +1022,11 @@ QList<QByteArray> QTextCodec::availableCodecs()
         codecs += all->at(i)->name();
         codecs += all->at(i)->aliases();
     }
+
+#ifndef QT_NO_THREAD
+    locker.unlock();
+#endif
+
 #ifndef QT_NO_TEXTCODECPLUGIN
     QFactoryLoader *l = loader();
     QStringList keys = l->keys();
@@ -1031,11 +1050,19 @@ QList<QByteArray> QTextCodec::availableCodecs()
 */
 QList<int> QTextCodec::availableMibs()
 {
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
 
     QList<int> codecs;
     for (int i = 0; i < all->size(); ++i)
         codecs += all->at(i)->mibEnum();
+
+#ifndef QT_NO_THREAD
+    locker.unlock();
+#endif
+
 #ifndef QT_NO_TEXTCODECPLUGIN
     QFactoryLoader *l = loader();
     QStringList keys = l->keys();
@@ -1082,6 +1109,9 @@ QTextCodec* QTextCodec::codecForLocale()
     if (localeMapper)
         return localeMapper;
 
+#ifndef QT_NO_THREAD
+    QMutexLocker locker(textCodecsMutex());
+#endif
     setup();
 
     return localeMapper;
diff --git a/src/corelib/codecs/qutfcodec.cpp b/src/corelib/codecs/qutfcodec.cpp
index f7d3b06..7655c51 100644
--- a/src/corelib/codecs/qutfcodec.cpp
+++ b/src/corelib/codecs/qutfcodec.cpp
@@ -326,11 +326,11 @@ QString QUtf16::convertToUnicode(const char *chars, int len, QTextCodec::Convert
                 ch.setCell(*chars++);
             }
             if (!headerdone) {
+                headerdone = true;
                 if (endian == DetectEndianness) {
-                    if (ch == QChar::ByteOrderSwapped && endian != BigEndianness) {
+                    if (ch == QChar::ByteOrderSwapped) {
                         endian = LittleEndianness;
-                    } else if (ch == QChar::ByteOrderMark && endian != LittleEndianness) {
-                        // ignore BOM
+                    } else if (ch == QChar::ByteOrderMark) {
                         endian = BigEndianness;
                     } else {
                         if (QSysInfo::ByteOrder == QSysInfo::BigEndian) {
@@ -344,7 +344,6 @@ QString QUtf16::convertToUnicode(const char *chars, int len, QTextCodec::Convert
                 } else if (ch != QChar::ByteOrderMark) {
                     *qch++ = ch;
                 }
-                headerdone = true;
             } else {
                 *qch++ = ch;
             }
diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp
index 20e5609..dfa2c17 100644
--- a/src/corelib/global/qglobal.cpp
+++ b/src/corelib/global/qglobal.cpp
@@ -1999,7 +1999,6 @@ void qt_check_pointer(const char *n, int l)
     qWarning("In file %s, line %d: Out of memory", n, l);
 }
 
-#ifndef QT_NO_EXCEPTIONS
 /* \internal
    Allows you to throw an exception without including <new>
    Called internally from Q_CHECK_PTR on certain OS combinations
@@ -2008,7 +2007,6 @@ void qBadAlloc()
 {
     QT_THROW(std::bad_alloc());
 }
-#endif
 
 /*
   The Q_ASSERT macro calls this function when the test fails.
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index abdafc3..f51849b 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -1674,10 +1674,7 @@ Q_CORE_EXPORT void qt_assert_x(const char *where, const char *what, const char *
 #endif
 
 Q_CORE_EXPORT void qt_check_pointer(const char *, int);
-
-#ifndef QT_NO_EXCEPTIONS
 Q_CORE_EXPORT void qBadAlloc();
-#endif
 
 #ifdef QT_NO_EXCEPTIONS
 #  if defined(QT_NO_DEBUG)
diff --git a/src/corelib/global/qnamespace.h b/src/corelib/global/qnamespace.h
index 38e1886..177bee4 100644
--- a/src/corelib/global/qnamespace.h
+++ b/src/corelib/global/qnamespace.h
@@ -497,6 +497,9 @@ public:
         WA_WState_AcceptedTouchBeginEvent = 122,
         WA_TouchPadAcceptSingleTouchEvents = 123,
 
+        WA_MergeSoftkeys =  124,
+        WA_MergeSoftkeysRecursively =  125,
+
         // Add new attributes before this line
         WA_AttributeCount
     };
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index 871dd5c..6627c76 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -524,11 +524,11 @@
        	   receiver are in the same thread. Same as QueuedConnection,
        	   if the emitter and receiver are in different threads.
 
-    \value DirectConnection  
+    \value DirectConnection
 	   The slot is invoked immediately, when the signal is
        	   emitted.
 
-    \value QueuedConnection  
+    \value QueuedConnection
     	   The slot is invoked when control returns to the event loop
        	   of the receiver's thread. The slot is executed in the
        	   receiver's thread.
@@ -1243,6 +1243,17 @@
     \value WA_TouchPadAcceptSingleTouchEvents Allows touchpad single
     touch events to be sent to the widget.
 
+    \value WA_MergeSoftkeys Allows widget to merge softkeys with parent widget,
+    i.e. widget can set only one softkeys and request softkey implementation
+    to take rest of the softkeys from the parent. Note parents are traversed until
+    WA_MergeSoftkeys is not set. See also Qt::WA_MergeSoftkeysRecursively
+    This attribute currently has effect only on Symbian platforms
+
+    \value WA_MergeSoftkeysRecursively Allows widget to merge softkeys recursively
+    with all parents. If this attribute is set, the widget parents are traversed until
+    window boundary (widget without parent or dialog) is found.
+    This attribute currently has effect only on Symbian platforms
+
     \omitvalue WA_SetLayoutDirection
     \omitvalue WA_InputMethodTransparent
     \omitvalue WA_WState_CompressKeys
diff --git a/src/corelib/io/qdebug.h b/src/corelib/io/qdebug.h
index 1c68716..bc68599 100644
--- a/src/corelib/io/qdebug.h
+++ b/src/corelib/io/qdebug.h
@@ -83,7 +83,7 @@ public:
             if(stream->message_output) {
                 QT_TRY {
                     qt_message_output(stream->type, stream->buffer.toLocal8Bit().data());
-                } QT_CATCH(std::bad_alloc) { /* We're out of memory - give up. */ }
+                } QT_CATCH(std::bad_alloc&) { /* We're out of memory - give up. */ }
             }
             delete stream;
         }
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index 43e978f..606941e 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -98,7 +98,7 @@ static inline QByteArray openModeToFopenMode(QIODevice::OpenMode flags, const QS
             if (!fileName.isEmpty()
                 && QT_STAT(QFile::encodeName(fileName), &statBuf) == 0
                 && (statBuf.st_mode & S_IFMT) == S_IFREG) {
-                mode += "+";
+                mode += '+';
             } else {
                 mode = "wb+";
             }
diff --git a/src/corelib/io/qprocess_symbian.cpp b/src/corelib/io/qprocess_symbian.cpp
index a1f2047..972b0e0 100644
--- a/src/corelib/io/qprocess_symbian.cpp
+++ b/src/corelib/io/qprocess_symbian.cpp
@@ -919,34 +919,41 @@ bool QProcessPrivate::waitForFinished(int msecs)
     Q_Q(QProcess);
     QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished(%d)", msecs);
 
-    TRequestStatus timerStatus = 0;
-    TRequestStatus logonStatus = 0;
+    TRequestStatus timerStatus = KErrNone;
+    TRequestStatus logonStatus = KErrNone;
     bool timeoutOccurred = false;
 
     // Logon to process to observe its death
     if (qt_rprocess_running(symbianProcess)) {
         symbianProcess->Logon(logonStatus);
 
-        // Create timer
-        RTimer timer;
-        timer.CreateLocal();
-        TTimeIntervalMicroSeconds32 interval(msecs*1000);
-        timer.After(timerStatus, interval);
+        if (msecs < 0) {
+            // If timeout is negative, there is no timeout
+            QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Waiting (just logon)...");
+            User::WaitForRequest(logonStatus);
+            QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Wait completed");
+        } else {
+            // Create timer
+            RTimer timer;
+            timer.CreateLocal();
+            TTimeIntervalMicroSeconds32 interval(msecs*1000);
+            timer.After(timerStatus, interval);
 
-        QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Waiting...");
-        User::WaitForRequest(logonStatus, timerStatus);
-        QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Wait completed");
+            QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Waiting (logon + timer)...");
+            User::WaitForRequest(logonStatus, timerStatus);
+            QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished() - Wait completed");
 
-        if (timerStatus == KErrNone)
-            timeoutOccurred = true;
+            if (timerStatus == KErrNone)
+                timeoutOccurred = true;
 
-        timer.Cancel();
-        timer.Close();
+            timer.Cancel();
+            timer.Close();
 
-        symbianProcess->LogonCancel(logonStatus);
+            symbianProcess->LogonCancel(logonStatus);
 
-        // Eat cancel request completion so that it won't mess up main thread scheduling later
-        User::WaitForRequest(logonStatus, timerStatus);
+            // Eat cancel request completion so that it won't mess up main thread scheduling later
+            User::WaitForRequest(logonStatus, timerStatus);
+        }
     } else {
         QPROCESS_DEBUG_PRINT("QProcessPrivate::waitForFinished(), qt_rprocess_running returned false");
     }
diff --git a/src/corelib/io/qprocess_unix.cpp b/src/corelib/io/qprocess_unix.cpp
index 0bf7d3f..5119ec0 100644
--- a/src/corelib/io/qprocess_unix.cpp
+++ b/src/corelib/io/qprocess_unix.cpp
@@ -783,7 +783,7 @@ bool QProcessPrivate::processStarted()
 
     // did we read an error message?
     if (i > 0)
-        q_func()->setErrorString(QString::fromUtf16(buf, i / sizeof(QChar)));
+        q_func()->setErrorString(QString((const QChar *)buf, i / sizeof(QChar)));
 
     return i <= 0;
 }
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index 2c31509..64015ce 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -1091,30 +1091,23 @@ static inline int pathHashKey(QSettings::Format format, QSettings::Scope scope)
     return int((uint(format) << 1) | uint(scope == QSettings::SystemScope));
 }
 
-static QString getPath(QSettings::Format format, QSettings::Scope scope)
+static void initDefaultPaths(QMutexLocker *locker)
 {
-    Q_ASSERT((int)QSettings::NativeFormat == 0);
-    Q_ASSERT((int)QSettings::IniFormat == 1);
-
+    PathHash *pathHash = pathHashFunc();
     QString homePath = QDir::homePath();
     QString systemPath;
 
-    QMutexLocker locker(globalMutex());
-    PathHash *pathHash = pathHashFunc();
-    bool loadSystemPath = pathHash->isEmpty();
-    locker.unlock();
-
-    if (loadSystemPath) {
-        /*
-           QLibraryInfo::location() uses QSettings, so in order to
-           avoid a dead-lock, we can't hold the global mutex while
-           calling it.
-       */
-        systemPath = QLibraryInfo::location(QLibraryInfo::SettingsPath);
-        systemPath += QLatin1Char('/');
-    }
+    locker->unlock();
+	
+    /*
+       QLibraryInfo::location() uses QSettings, so in order to
+       avoid a dead-lock, we can't hold the global mutex while
+       calling it.
+    */
+    systemPath = QLibraryInfo::location(QLibraryInfo::SettingsPath);
+    systemPath += QLatin1Char('/');
 
-    locker.relock();
+    locker->relock();
     if (pathHash->isEmpty()) {
         /*
            Lazy initialization of pathHash. We initialize the
@@ -1155,6 +1148,17 @@ static QString getPath(QSettings::Format format, QSettings::Scope scope)
 #endif
 #endif
     }
+}
+
+static QString getPath(QSettings::Format format, QSettings::Scope scope)
+{
+    Q_ASSERT((int)QSettings::NativeFormat == 0);
+    Q_ASSERT((int)QSettings::IniFormat == 1);
+
+    QMutexLocker locker(globalMutex());
+    PathHash *pathHash = pathHashFunc();
+    if (pathHash->isEmpty())
+        initDefaultPaths(&locker);
 
     QString result = pathHash->value(pathHashKey(format, scope));
     if (!result.isEmpty())
@@ -3455,6 +3459,8 @@ void QSettings::setPath(Format format, Scope scope, const QString &path)
 {
     QMutexLocker locker(globalMutex());
     PathHash *pathHash = pathHashFunc();
+    if (pathHash->isEmpty())
+        initDefaultPaths(&locker);
     pathHash->insert(pathHashKey(format, scope), path + QDir::separator());
 }
 
diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index a131d6c..076cc33 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -3241,8 +3241,11 @@ static QString qt_ACE_do(const QString &domain, AceOperation op)
     while (1) {
         int idx = nextDotDelimiter(domain, lastIdx);
         int labelLength = idx - lastIdx;
-        if (labelLength == 0)
+        if (labelLength == 0) {
+            if (idx == domain.length())
+                break;
             return QString(); // two delimiters in a row -- empty label not allowed
+        }
 
         // RFC 3490 says, about the ToASCII operation:
         //   3. If the UseSTD3ASCIIRules flag is set, then perform these checks:
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index dbf422e..36e4af9 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -1006,6 +1006,9 @@ void QAbstractItemModelPrivate::columnsRemoved(const QModelIndex &parent,
     Returns the child of the model index that is stored in the given \a row and
     \a column.
 
+    \note This function does not work for an invalid model index which is often
+    used as the root index.
+
     \sa parent(), sibling()
 */
 
diff --git a/src/corelib/kernel/qcore_symbian_p.cpp b/src/corelib/kernel/qcore_symbian_p.cpp
index 5d2a6a5..0257ac4 100644
--- a/src/corelib/kernel/qcore_symbian_p.cpp
+++ b/src/corelib/kernel/qcore_symbian_p.cpp
@@ -71,7 +71,7 @@ Q_CORE_EXPORT QString qt_TDesC2QString(const TDesC& aDescriptor)
 #ifdef QT_NO_UNICODE
     return QString::fromLocal8Bit(aDescriptor.Ptr(), aDescriptor.Length());
 #else
-    return QString::fromUtf16(aDescriptor.Ptr(), aDescriptor.Length());
+    return QString(reinterpret_cast<const QChar *>(aDescriptor.Ptr()), aDescriptor.Length());
 #endif
 }
 
diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
index 005dedc..2da5a7d 100644
--- a/src/corelib/kernel/qcoreapplication.cpp
+++ b/src/corelib/kernel/qcoreapplication.cpp
@@ -2219,7 +2219,8 @@ QStringList QCoreApplication::libraryPaths()
             TFindFile finder(fs);
             TInt err = finder.FindByDir(tempPathPtr, tempPathPtr);
             while (err == KErrNone) {
-                QString foundDir = QString::fromUtf16(finder.File().Ptr(), finder.File().Length());
+                QString foundDir(reinterpret_cast<const QChar *>(finder.File().Ptr()),
+                                 finder.File().Length());
                 foundDir = QDir(foundDir).canonicalPath();
                 if (!app_libpaths->contains(foundDir))
                     app_libpaths->append(foundDir);
@@ -2267,6 +2268,10 @@ QStringList QCoreApplication::libraryPaths()
     \a paths. All existing paths will be deleted and the path list
     will consist of the paths given in \a paths.
 
+    In Symbian this function is only useful for setting paths for
+    finding Qt extension plugin stubs, since the OS can only
+    load libraries from the \c{/sys/bin} directory.
+
     \sa libraryPaths(), addLibraryPath(), removeLibraryPath(), QLibrary
  */
 void QCoreApplication::setLibraryPaths(const QStringList &paths)
@@ -2290,6 +2295,10 @@ void QCoreApplication::setLibraryPaths(const QStringList &paths)
   is \c INSTALL/plugins, where \c INSTALL is the directory where Qt was
   installed.
 
+  In Symbian this function is only useful for adding paths for
+  finding Qt extension plugin stubs, since the OS can only
+  load libraries from the \c{/sys/bin} directory.
+
   \sa removeLibraryPath(), libraryPaths(), setLibraryPaths()
  */
 void QCoreApplication::addLibraryPath(const QString &path)
diff --git a/src/corelib/kernel/qcoreevent.cpp b/src/corelib/kernel/qcoreevent.cpp
index 3f69b4f..3500b63 100644
--- a/src/corelib/kernel/qcoreevent.cpp
+++ b/src/corelib/kernel/qcoreevent.cpp
@@ -133,10 +133,10 @@ QT_BEGIN_NAMESPACE
     \value GrabKeyboard                     Item gains keyboard grab (QGraphicsItem only).
     \value GrabMouse                        Item gains mouse grab (QGraphicsItem only).
     \value GraphicsSceneContextMenu         Context popup menu over a graphics scene (QGraphicsSceneContextMenuEvent).
-    \value GraphicsSceneDragEnter           The cursor enters a graphics scene during a drag and drop operation.
-    \value GraphicsSceneDragLeave           The cursor leaves a graphics scene during a drag and drop operation.
-    \value GraphicsSceneDragMove            A drag and drop operation is in progress over a scene.
-    \value GraphicsSceneDrop                A drag and drop operation is completed over a scene.
+    \value GraphicsSceneDragEnter           The cursor enters a graphics scene during a drag and drop operation (QGraphicsSceneDragDropEvent).
+    \value GraphicsSceneDragLeave           The cursor leaves a graphics scene during a drag and drop operation (QGraphicsSceneDragDropEvent).
+    \value GraphicsSceneDragMove            A drag and drop operation is in progress over a scene (QGraphicsSceneDragDropEvent).
+    \value GraphicsSceneDrop                A drag and drop operation is completed over a scene (QGraphicsSceneDragDropEvent).
     \value GraphicsSceneHelp                The user requests help for a graphics scene (QHelpEvent).
     \value GraphicsSceneHoverEnter          The mouse cursor enters a hover item in a graphics scene (QGraphicsSceneHoverEvent).
     \value GraphicsSceneHoverLeave          The mouse cursor leaves a hover item in a graphics scene (QGraphicsSceneHoverEvent).
diff --git a/src/corelib/kernel/qtranslator.cpp b/src/corelib/kernel/qtranslator.cpp
index b7e6ea0..7d1e1d3 100644
--- a/src/corelib/kernel/qtranslator.cpp
+++ b/src/corelib/kernel/qtranslator.cpp
@@ -633,7 +633,7 @@ static QString getMessage(const uchar *m, const uchar *end, const char *context,
 end:
     if (!tn)
         return QString();
-    QString str = QString::fromUtf16((const ushort *)tn, tn_length/2);
+    QString str = QString((const QChar *)tn, tn_length/2);
     if (QSysInfo::ByteOrder == QSysInfo::LittleEndian) {
         for (int i = 0; i < str.length(); ++i)
             str[i] = QChar((str.at(i).unicode() >> 8) + ((str.at(i).unicode() << 8) & 0xff00));
diff --git a/src/corelib/plugin/qlibrary.cpp b/src/corelib/plugin/qlibrary.cpp
index 7112043..f2c2384 100644
--- a/src/corelib/plugin/qlibrary.cpp
+++ b/src/corelib/plugin/qlibrary.cpp
@@ -539,6 +539,7 @@ bool QLibraryPrivate::loadPlugin()
     \row \i AIX  \i \c .a
     \row \i HP-UX       \i \c .sl, \c .so (HP-UXi)
     \row \i Mac OS X    \i \c .dylib, \c .bundle, \c .so
+    \row \i Symbian     \i \c .dll
     \endtable
 
     Trailing versioning numbers on Unix are ignored.
diff --git a/src/corelib/thread/qthread_win.cpp b/src/corelib/thread/qthread_win.cpp
index b276f0a..37d5b87 100644
--- a/src/corelib/thread/qthread_win.cpp
+++ b/src/corelib/thread/qthread_win.cpp
@@ -40,7 +40,9 @@
 ****************************************************************************/
 
 //#define WINVER 0x0500
+#if _WIN32_WINNT < 0x0400
 #define _WIN32_WINNT 0x0400
+#endif
 
 
 #include "qthread.h"
diff --git a/src/corelib/tools/qeasingcurve.cpp b/src/corelib/tools/qeasingcurve.cpp
index 0ef92d9..b6a2df4 100644
--- a/src/corelib/tools/qeasingcurve.cpp
+++ b/src/corelib/tools/qeasingcurve.cpp
@@ -125,7 +125,7 @@
     \value OutCubic     \inlineimage qeasingcurve-outcubic.png
                         \br
                         Easing curve for a cubic (t^3) function:
-                        decelerating from zero velocity.
+                        decelerating to zero velocity.
     \value InOutCubic   \inlineimage qeasingcurve-inoutcubic.png
                         \br
                         Easing curve for a cubic (t^3) function:
@@ -141,7 +141,7 @@
     \value OutQuart     \inlineimage qeasingcurve-outquart.png
                         \br
                         Easing curve for a cubic (t^4) function:
-                        decelerating from zero velocity.
+                        decelerating to zero velocity.
     \value InOutQuart   \inlineimage qeasingcurve-inoutquart.png
                         \br
                         Easing curve for a cubic (t^4) function:
@@ -157,7 +157,7 @@
     \value OutQuint     \inlineimage qeasingcurve-outquint.png
                         \br
                         Easing curve for a cubic (t^5) function:
-                        decelerating from zero velocity.
+                        decelerating to zero velocity.
     \value InOutQuint   \inlineimage qeasingcurve-inoutquint.png
                         \br
                         Easing curve for a cubic (t^5) function:
diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index d758325..6231471 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -68,8 +68,8 @@ static uint hash(const uchar *p, int n)
 
     while (n--) {
         h = (h << 4) + *p++;
-        if ((g = (h & 0xf0000000)) != 0)
-            h ^= g >> 23;
+        g = h & 0xf0000000;
+        h ^= g >> 23;
         h &= ~g;
     }
     return h;
@@ -82,8 +82,8 @@ static uint hash(const QChar *p, int n)
 
     while (n--) {
         h = (h << 4) + (*p++).unicode();
-        if ((g = (h & 0xf0000000)) != 0)
-            h ^= g >> 23;
+        g = h & 0xf0000000;
+        h ^= g >> 23;
         h &= ~g;
     }
     return h;
diff --git a/src/corelib/tools/qlist.cpp b/src/corelib/tools/qlist.cpp
index f1df9bd..c302857 100644
--- a/src/corelib/tools/qlist.cpp
+++ b/src/corelib/tools/qlist.cpp
@@ -208,7 +208,7 @@ void **QListData::append2(const QListData& l)
     int n = l.d->end - l.d->begin;
     if (n) {
         if (e + n > d->alloc)
-            realloc(grow(e + l.d->end - l.d->begin));
+            realloc(grow(e + n));
         d->end += n;
     }
     return d->array + e;
diff --git a/src/corelib/tools/qsharedpointer.cpp b/src/corelib/tools/qsharedpointer.cpp
index 21816b9..1b4b356 100644
--- a/src/corelib/tools/qsharedpointer.cpp
+++ b/src/corelib/tools/qsharedpointer.cpp
@@ -130,7 +130,7 @@
     multiple- or virtual-inheritance (that is, in cases where two different
     pointer addresses can refer to the same object). In that case, if a
     pointer is cast to a different type and its value changes,
-    QSharedPointer's pointer tracking mechanism mail fail to detect that the
+    QSharedPointer's pointer tracking mechanism may fail to detect that the
     object being tracked is the same.
 
     \omit
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index b9dd4d1..3ef0e66 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -885,7 +885,7 @@ int QString::grow(int size)
 QString QString::fromWCharArray(const wchar_t *string, int size)
 {
     if (sizeof(wchar_t) == sizeof(QChar)) {
-        return fromUtf16((ushort *)string, size);
+        return fromUtf16((const ushort *)string, size);
     } else {
         return fromUcs4((uint *)string, size);
     }
@@ -3857,6 +3857,12 @@ QString QString::fromUtf8(const char *str, int size)
     If \a size is -1 (default), \a unicode must be terminated
     with a 0.
 
+    This function checks for a Byte Order Mark (BOM). If it is missing,
+    host byte order is assumed.
+
+    This function is comparatively slow.
+    Use QString(const ushort *, int) if possible.
+
     QString makes a deep copy of the Unicode data.
 
     \sa utf16(), setUtf16()
@@ -3923,6 +3929,9 @@ QString& QString::setUnicode(const QChar *unicode, int size)
     If \a unicode is 0, nothing is copied, but the string is still
     resized to \a size.
 
+    Note that unlike fromUtf16(), this function does not consider BOMs and
+    possibly differing byte ordering.
+
     \sa utf16(), setUnicode()
 */
 
@@ -4669,6 +4678,8 @@ int QString::localeAwareCompare_helper(const QChar *data1, int length1,
     Returns the QString as a '\\0\'-terminated array of unsigned
     shorts. The result remains valid until the string is modified.
 
+    The returned string is in host byte order.
+
     \sa unicode()
 */
 
@@ -7740,7 +7751,7 @@ QString QStringRef::toString() const {
         return QString();
     if (m_size && m_position == 0 && m_size == m_string->size())
         return *m_string;
-    return QString::fromUtf16(reinterpret_cast<const ushort*>(m_string->unicode() + m_position), m_size);
+    return QString(m_string->unicode() + m_position, m_size);
 }
 
 
diff --git a/src/corelib/tools/qstringbuilder.h b/src/corelib/tools/qstringbuilder.h
index ddb5c7d..74661c2 100644
--- a/src/corelib/tools/qstringbuilder.h
+++ b/src/corelib/tools/qstringbuilder.h
@@ -71,7 +71,7 @@ public:
 
 private:
     const int m_size;
-    const char *m_data;
+    const char * const m_data;
 };
 
 struct Q_CORE_EXPORT QAbstractConcatenable