Merge branch 'qdoc-simplified' into mimir-simplified

Conflicts:
	doc/src/platforms/compiler-notes.qdoc
	tools/qdoc3/ditaxmlgenerator.cpp
	tools/qdoc3/ditaxmlgenerator.h
	tools/qdoc3/htmlgenerator.cpp
	tools/qdoc3/htmlgenerator.h
	tools/qdoc3/node.cpp
	tools/qdoc3/pagegenerator.h

37 files changed, 323 insertions, 241 deletions

diff --git a/src/corelib/arch/armv6/qatomic_generic_armv6.cpp b/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
index 39d966a..444d3d3 100644
--- a/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
+++ b/src/corelib/arch/armv6/qatomic_generic_armv6.cpp
@@ -38,7 +38,7 @@
 ** $QT_END_LICENSE$
 **
 ** This file implements the generic atomics interface using ARMv6 assembly
-** instructions. It is more efficent than the inline versions when Qt is
+** instructions. It is more efficient than the inline versions when Qt is
 ** built for the THUMB instruction set, as the required instructions are
 ** only available in ARM state.
 ****************************************************************************/
diff --git a/src/corelib/arch/symbian/heap_hybrid.cpp b/src/corelib/arch/symbian/heap_hybrid.cpp
index 91faaed..5d2b2b6 100644
--- a/src/corelib/arch/symbian/heap_hybrid.cpp
+++ b/src/corelib/arch/symbian/heap_hybrid.cpp
@@ -134,7 +134,7 @@ The constant can be changed at ROM build time using patchdata OBY keyword.
 
 @deprecated Patching this constant no longer has any effect.
 */
-#ifdef __X86GCC__	// For X86GCC we dont use the proper data import attribute
+#ifdef __X86GCC__	// For X86GCC we don't use the proper data import attribute
 #undef IMPORT_D		// since the constants are not really imported. GCC doesn't 
 #define IMPORT_D	// allow imports from self.
 #endif
@@ -451,7 +451,7 @@ TInt RHybridHeap::ConstructLock(TUint32 aMode)
 
 void RHybridHeap::Init(TInt aBitmapSlab, TInt aPagePower)
 {
-	/*Moved code which does initilization */
+	/*Moved code which does initialization */
 	iTop  = (TUint8*)this + iMinLength;
 	iBase = Ceiling(iBase, ECellAlignment);	// Align iBase address 
 	
@@ -874,7 +874,7 @@ available in the largest free block.
 Note that this function exists mainly for compatibility reasons.  In a modern
 heap implementation such as that present in Symbian it is not appropriate to
 concern oneself with details such as the amount of free memory available on a
-heap and its largeset free block, because the way that a modern heap implmentation
+heap and its largeset free block, because the way that a modern heap implementation
 works is not simple.  The amount of available virtual memory != physical memory
 and there are multiple allocation strategies used internally, which makes all
 memory usage figures "fuzzy" at best.
@@ -1616,7 +1616,7 @@ void* RHybridHeap::DlMalloc(size_t bytes)
 void RHybridHeap::DlFree(void* mem)
 {
 	/*
-	Consolidate freed chunks with preceeding or succeeding bordering
+	Consolidate freed chunks with preceding or succeeding bordering
 	free chunks, if they exist, and then place in a bin.	Intermixed
 	with special cases for iTop, iDv, mmapped chunks, and usage errors.
 */
diff --git a/src/corelib/codecs/qutfcodec.cpp b/src/corelib/codecs/qutfcodec.cpp
index f747bf7..031baa3 100644
--- a/src/corelib/codecs/qutfcodec.cpp
+++ b/src/corelib/codecs/qutfcodec.cpp
@@ -195,7 +195,7 @@ QString QUtf8::convertToUnicode(const char *chars, int len, QTextCodec::Converte
                     // utf-8 bom composes into 0xfeff code point
                     bool nonCharacter;
                     if (!headerdone && uc == 0xfeff) {
-                        // dont do anything, just skip the BOM
+                        // don't do anything, just skip the BOM
                     } else if (!(nonCharacter = isUnicodeNonCharacter(uc)) && uc > 0xffff && uc < 0x110000) {
                         // surrogate pair
                         Q_ASSERT((qch - (ushort*)result.unicode()) + 2 < result.length());
diff --git a/src/corelib/corelib.pro b/src/corelib/corelib.pro
index b7d6034..a001940 100644
--- a/src/corelib/corelib.pro
+++ b/src/corelib/corelib.pro
@@ -37,10 +37,3 @@ symbian: {
     MMP_RULES -= PAGED
     MMP_RULES *= UNPAGED
 }
-
-neon {
-    DEFINES += QT_HAVE_NEON
-    QMAKE_CXXFLAGS *= -mfpu=neon
-}
-
-
diff --git a/src/corelib/global/global.pri b/src/corelib/global/global.pri
index 4800716..86800ef 100644
--- a/src/corelib/global/global.pri
+++ b/src/corelib/global/global.pri
@@ -27,3 +27,5 @@ linux*:!static:!linux-armcc:!linux-gcce {
 
 # Compensate for lack of platform defines in Symbian3 and Symbian4
 symbian: DEFINES += SYMBIAN_VERSION_$$upper($$replace(SYMBIAN_VERSION,\\.,_))
+
+include(../../../tools/shared/symbian/epocroot.pri)
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h
index 35607d5..b148a1d 100644
--- a/src/corelib/global/qglobal.h
+++ b/src/corelib/global/qglobal.h
@@ -44,11 +44,11 @@
 
 #include <stddef.h>
 
-#define QT_VERSION_STR   "4.7.1"
+#define QT_VERSION_STR   "4.7.2"
 /*
    QT_VERSION is (major << 16) + (minor << 8) + patch.
 */
-#define QT_VERSION 0x040701
+#define QT_VERSION 0x040702
 /*
    can be used like #if (QT_VERSION >= QT_VERSION_CHECK(4, 4, 0))
 */
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index 957abbf..898b860 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -62,6 +62,10 @@ QT_END_NAMESPACE
 #  include "private/qcore_mac_p.h"
 #endif
 
+#ifdef QLIBRARYINFO_EPOCROOT
+# include "symbian/epocroot_p.h"
+#endif
+
 #include "qconfig.cpp"
 
 QT_BEGIN_NAMESPACE
@@ -433,6 +437,14 @@ QLibraryInfo::location(LibraryLocation loc)
                             QString::fromLocal8Bit(qgetenv(ret.mid(rep + 2,
                                 reg_var.matchedLength() - 3).toLatin1().constData()).constData()));
             }
+
+#ifdef QLIBRARYINFO_EPOCROOT
+            // $${EPOCROOT} is a special case, resolve it similarly to qmake.
+            QRegExp epocrootMatcher(QLatin1String("\\$\\$\\{EPOCROOT\\}"));
+            if ((rep = epocrootMatcher.indexIn(ret)) != -1)
+                ret.replace(rep, epocrootMatcher.matchedLength(), qt_epocRoot());
+#endif
+
             config->endGroup();
         }
     }
diff --git a/src/corelib/global/qmalloc.cpp b/src/corelib/global/qmalloc.cpp
index 090998c..028a0a5 100644
--- a/src/corelib/global/qmalloc.cpp
+++ b/src/corelib/global/qmalloc.cpp
@@ -90,8 +90,6 @@ void *qReallocAligned(void *oldptr, size_t newsize, size_t oldsize, size_t align
         return newptr + 1;
     }
 
-    union { void *ptr; void **pptr; quintptr n; } real, faked;
-
     // qMalloc returns pointers aligned at least at sizeof(size_t) boundaries
     // but usually more (8- or 16-byte boundaries).
     // So we overallocate by alignment-sizeof(size_t) bytes, so we're guaranteed to find a
@@ -100,19 +98,21 @@ void *qReallocAligned(void *oldptr, size_t newsize, size_t oldsize, size_t align
     // However, we need to store the actual pointer, so we need to allocate actually size +
     // alignment anyway.
 
-    real.ptr = qRealloc(actualptr, newsize + alignment);
-    if (!real.ptr)
+    void *real = qRealloc(actualptr, newsize + alignment);
+    if (!real)
         return 0;
 
-    faked.n = real.n + alignment;
-    faked.n &= ~(alignment - 1);
+    quintptr faked = reinterpret_cast<quintptr>(real) + alignment;
+    faked &= ~(alignment - 1);
+
+    void **faked_ptr = reinterpret_cast<void **>(faked);
 
     // now save the value of the real pointer at faked-sizeof(void*)
     // by construction, alignment > sizeof(void*) and is a power of 2, so
     // faked-sizeof(void*) is properly aligned for a pointer
-    faked.pptr[-1] = real.ptr;
+    faked_ptr[-1] = real;
 
-    return faked.ptr;
+    return faked_ptr;
 }
 
 void qFreeAligned(void *ptr)
diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index 1c41eca..6b1aa17 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -470,9 +470,9 @@
            text; otherwise this width is excluded.
     \value TextIncludeTrailingSpaces Same as IncludeTrailingSpaces
     \value TextJustificationForced Ensures that text lines are justified.
-    \value TextLongestVariant Ensures that the longest variant is always used
-           when computing the size of a multi-variant string.
 
+    \omitvalue TextLongestVariant Ensures that the longest variant is always used
+           when computing the size of a multi-variant string. (Internal)
     \omitvalue TextBypassShaping
     \omitvalue BreakAnywhere
     \omitvalue DontClip
@@ -511,11 +511,11 @@
     delivery at a later time.
 
     \value AutoConnection
-            (default) If the object sending the signal is in a different thread
-            than the receiving object, the signal is queued, behaving as
-            Qt::QueuedConnection. If both objects are in the same thread,
-            the slot is invoked directly, behaving as Qt::DirectConnection. The
-            type of connection is determined when the signal is emitted.
+            (default) If the signal is emitted from a different thread than the
+            receiving object, the signal is queued, behaving as
+            Qt::QueuedConnection. Otherwise, the slot is invoked directly,
+            behaving as Qt::DirectConnection. The type of connection is
+            determined when the signal is emitted.
 
     \value DirectConnection
 	   The slot is invoked immediately, when the signal is
diff --git a/src/corelib/io/qdiriterator.cpp b/src/corelib/io/qdiriterator.cpp
index fd4b9c1..dbb333f 100644
--- a/src/corelib/io/qdiriterator.cpp
+++ b/src/corelib/io/qdiriterator.cpp
@@ -389,9 +389,6 @@ QDirIterator::QDirIterator(const QDir &dir, IteratorFlags flags)
     \note To list symlinks that point to non existing files, QDir::System must be
      passed to the flags.
 
-    \warning This constructor expects \a flags to be left at its default value. Use
-             the constructors that do not take the \a filters argument instead.
-
     \sa hasNext(), next(), IteratorFlags
 */
 QDirIterator::QDirIterator(const QString &path, QDir::Filters filters, IteratorFlags flags)
@@ -429,9 +426,6 @@ QDirIterator::QDirIterator(const QString &path, IteratorFlags flags)
     \note To list symlinks that point to non existing files, QDir::System must be
      passed to the flags.
 
-    \warning This constructor expects \c flags to be left at its default value. Use the
-             constructors that do not take the \a filters argument instead.
-
     \sa hasNext(), next(), IteratorFlags
 */
 QDirIterator::QDirIterator(const QString &path, const QStringList &nameFilters,
diff --git a/src/corelib/io/qfilesystemwatcher.cpp b/src/corelib/io/qfilesystemwatcher.cpp
index 18c3c9f..1e6dcee 100644
--- a/src/corelib/io/qfilesystemwatcher.cpp
+++ b/src/corelib/io/qfilesystemwatcher.cpp
@@ -228,8 +228,14 @@ void QPollingFileSystemWatcherEngine::timeout()
             dit.remove();
             emit directoryChanged(path, true);
         } else if (x.value() != fi) {
-            x.value() = fi;
-            emit directoryChanged(path, false);
+            fi.refresh();
+            if (!fi.exists()) {
+                dit.remove();
+                emit directoryChanged(path, true);
+            } else {
+                x.value() = fi;
+                emit directoryChanged(path, false);
+            }
         }
         
     }
diff --git a/src/corelib/io/qfilesystemwatcher_kqueue.cpp b/src/corelib/io/qfilesystemwatcher_kqueue.cpp
index 378ad20..3664396 100644
--- a/src/corelib/io/qfilesystemwatcher_kqueue.cpp
+++ b/src/corelib/io/qfilesystemwatcher_kqueue.cpp
@@ -117,67 +117,77 @@ QStringList QKqueueFileSystemWatcherEngine::addPaths(const QStringList &paths,
                                                      QStringList *files,
                                                      QStringList *directories)
 {
-    QMutexLocker locker(&mutex);
-
     QStringList p = paths;
-    QMutableListIterator<QString> it(p);
-    while (it.hasNext()) {
-        QString path = it.next();
-        int fd;
+    {
+        QMutexLocker locker(&mutex);
+
+        QMutableListIterator<QString> it(p);
+        while (it.hasNext()) {
+            QString path = it.next();
+            int fd;
 #if defined(O_EVTONLY)
-        fd = qt_safe_open(QFile::encodeName(path), O_EVTONLY);
+            fd = qt_safe_open(QFile::encodeName(path), O_EVTONLY);
 #else
-        fd = qt_safe_open(QFile::encodeName(path), O_RDONLY);
+            fd = qt_safe_open(QFile::encodeName(path), O_RDONLY);
 #endif
-        if (fd == -1) {
-            perror("QKqueueFileSystemWatcherEngine::addPaths: open");
-            continue;
-        }
+            if (fd == -1) {
+                perror("QKqueueFileSystemWatcherEngine::addPaths: open");
+                continue;
+            }
+            if (fd >= (int)FD_SETSIZE / 2 && fd < (int)FD_SETSIZE) {
+                int fddup = fcntl(fd, F_DUPFD, FD_SETSIZE);
+                if (fddup != -1) {
+                    ::close(fd);
+                    fd = fddup;
+                }
+            }
+            fcntl(fd, F_SETFD, FD_CLOEXEC);
 
-        QT_STATBUF st;
-        if (QT_FSTAT(fd, &st) == -1) {
-            perror("QKqueueFileSystemWatcherEngine::addPaths: fstat");
-            ::close(fd);
-            continue;
-        }
-        int id = (S_ISDIR(st.st_mode)) ? -fd : fd;
-        if (id < 0) {
-            if (directories->contains(path)) {
+            QT_STATBUF st;
+            if (QT_FSTAT(fd, &st) == -1) {
+                perror("QKqueueFileSystemWatcherEngine::addPaths: fstat");
                 ::close(fd);
                 continue;
             }
-        } else {
-            if (files->contains(path)) {
+            int id = (S_ISDIR(st.st_mode)) ? -fd : fd;
+            if (id < 0) {
+                if (directories->contains(path)) {
+                    ::close(fd);
+                    continue;
+                }
+            } else {
+                if (files->contains(path)) {
+                    ::close(fd);
+                    continue;
+                }
+            }
+
+            struct kevent kev;
+            EV_SET(&kev,
+                   fd,
+                   EVFILT_VNODE,
+                   EV_ADD | EV_ENABLE | EV_CLEAR,
+                   NOTE_DELETE | NOTE_WRITE | NOTE_EXTEND | NOTE_ATTRIB | NOTE_RENAME | NOTE_REVOKE,
+                   0,
+                   0);
+            if (kevent(kqfd, &kev, 1, 0, 0, 0) == -1) {
+                perror("QKqueueFileSystemWatcherEngine::addPaths: kevent");
                 ::close(fd);
                 continue;
             }
-        }
 
-        struct kevent kev;
-        EV_SET(&kev,
-               fd,
-               EVFILT_VNODE,
-               EV_ADD | EV_ENABLE | EV_ONESHOT,
-               NOTE_DELETE | NOTE_WRITE | NOTE_EXTEND | NOTE_ATTRIB | NOTE_RENAME | NOTE_REVOKE,
-               0,
-               0);
-        if (kevent(kqfd, &kev, 1, 0, 0, 0) == -1) {
-            perror("QKqueueFileSystemWatcherEngine::addPaths: kevent");
-            ::close(fd);
-            continue;
-        }
+            it.remove();
+            if (id < 0) {
+                DEBUG() << "QKqueueFileSystemWatcherEngine: added directory path" << path;
+                directories->append(path);
+            } else {
+                DEBUG() << "QKqueueFileSystemWatcherEngine: added file path" << path;
+                files->append(path);
+            }
 
-        it.remove();
-        if (id < 0) {
-            DEBUG() << "QKqueueFileSystemWatcherEngine: added directory path" << path;
-            directories->append(path);
-        } else {
-            DEBUG() << "QKqueueFileSystemWatcherEngine: added file path" << path;
-            files->append(path);
+            pathToID.insert(path, id);
+            idToPath.insert(id, path);
         }
-
-        pathToID.insert(path, id);
-        idToPath.insert(id, path);
     }
 
     if (!isRunning())
@@ -192,43 +202,35 @@ QStringList QKqueueFileSystemWatcherEngine::removePaths(const QStringList &paths
                                                         QStringList *files,
                                                         QStringList *directories)
 {
-    QMutexLocker locker(&mutex);
-
+    bool isEmpty;
     QStringList p = paths;
-    QMutableListIterator<QString> it(p);
-    while (it.hasNext()) {
-        QString path = it.next();
-        int id = pathToID.take(path);
-        QString x = idToPath.take(id);
-        if (x.isEmpty() || x != path)
-            continue;
-
-        int fd = id < 0 ? -id : id;
-        struct kevent kev;
-        EV_SET(&kev,
-               fd,
-               EVFILT_VNODE,
-               EV_DELETE,
-               NOTE_DELETE | NOTE_WRITE | NOTE_EXTEND | NOTE_ATTRIB | NOTE_RENAME | NOTE_REVOKE,
-               0,
-               0);
-        if (kevent(kqfd, &kev, 1, 0, 0, 0) == -1) {
-            perror("QKqueueFileSystemWatcherEngine::removeWatch: kevent");
-        }
-        ::close(fd);
+    {
+        QMutexLocker locker(&mutex);
+        if (pathToID.isEmpty())
+            return p;
+
+        QMutableListIterator<QString> it(p);
+        while (it.hasNext()) {
+            QString path = it.next();
+            int id = pathToID.take(path);
+            QString x = idToPath.take(id);
+            if (x.isEmpty() || x != path)
+                continue;
 
-        it.remove();
-        if (id < 0)
-            directories->removeAll(path);
-        else
-            files->removeAll(path);
+            ::close(id < 0 ? -id : id);
+
+            it.remove();
+            if (id < 0)
+                directories->removeAll(path);
+            else
+                files->removeAll(path);
+        }
+        isEmpty = pathToID.isEmpty();
     }
 
-    if (pathToID.isEmpty()) {
+    if (isEmpty) {
         stop();
-        locker.unlock();
         wait();
-        locker.relock();
     } else {
         write(kqpipe[1], "@", 1);
     }
@@ -243,19 +245,15 @@ void QKqueueFileSystemWatcherEngine::stop()
 
 void QKqueueFileSystemWatcherEngine::run()
 {
-    static const struct timespec ZeroTimeout = { 0, 0 };
-
     forever {
+        int r;
         struct kevent kev;
         DEBUG() << "QKqueueFileSystemWatcherEngine: waiting for kevents...";
-        int r = kevent(kqfd, 0, 0, &kev, 1, 0);
+        EINTR_LOOP(r, kevent(kqfd, 0, 0, &kev, 1, 0));
         if (r < 0) {
             perror("QKqueueFileSystemWatcherEngine: error during kevent wait");
             return;
-        }
-
-        QMutexLocker locker(&mutex);
-        do {
+        } else {
             int fd = kev.ident;
 
             DEBUG() << "QKqueueFileSystemWatcherEngine: processing kevent" << kev.ident << kev.filter;
@@ -287,6 +285,8 @@ void QKqueueFileSystemWatcherEngine::run()
                     break;
                 }
             } else {
+                QMutexLocker locker(&mutex);
+
                 int id = fd;
                 QString path = idToPath.value(id);
                 if (path.isEmpty()) {
@@ -295,12 +295,12 @@ void QKqueueFileSystemWatcherEngine::run()
                     path = idToPath.value(id);
                     if (path.isEmpty()) {
                         DEBUG() << "QKqueueFileSystemWatcherEngine: received a kevent for a file we're not watching";
-                        goto process_next_event;
+                        continue;
                     }
                 }
                 if (kev.filter != EVFILT_VNODE) {
                     DEBUG() << "QKqueueFileSystemWatcherEngine: received a kevent with the wrong filter";
-                    goto process_next_event;
+                    continue;
                 }
 
                 if ((kev.fflags & (NOTE_DELETE | NOTE_REVOKE | NOTE_RENAME)) != 0) {
@@ -315,31 +315,15 @@ void QKqueueFileSystemWatcherEngine::run()
                     else
                         emit fileChanged(path, true);
                 } else {
-                    DEBUG() << path << "changed, re-enabling watch";
+                    DEBUG() << path << "changed";
 
                     if (id < 0)
                         emit directoryChanged(path, false);
                     else
                         emit fileChanged(path, false);
-
-                    // renable the watch
-                    EV_SET(&kev,
-                           fd,
-                           EVFILT_VNODE,
-                           EV_ADD | EV_ENABLE | EV_ONESHOT,
-                           NOTE_DELETE | NOTE_WRITE | NOTE_EXTEND | NOTE_ATTRIB | NOTE_RENAME | NOTE_REVOKE,
-                           0,
-                           0);
-                    if (kevent(kqfd, &kev, 1, 0, 0, 0) == -1) {
-                        perror("QKqueueFileSystemWatcherEngine::processKqueueEvents: kevent EV_ADD");
-                    }
                 }
             }
-
-            // are there any more?
-process_next_event:
-            r = kevent(kqfd, 0, 0, &kev, 1, &ZeroTimeout);
-        } while (r > 0);
+        }
     }
 }
 
diff --git a/src/corelib/io/qfsfileengine_unix.cpp b/src/corelib/io/qfsfileengine_unix.cpp
index d83f7ee..69e9219 100644
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -695,7 +695,7 @@ bool QFSFileEnginePrivate::doStat() const
         } else if (fd == -1) {
             // ### actually covers two cases: d->fh and when the file is not open
 #if defined(Q_OS_SYMBIAN)
-            // Optimisation for Symbian where fileFlags() calls both doStat() and isSymlink(), but rarely on real links.
+            // Optimization for Symbian where fileFlags() calls both doStat() and isSymlink(), but rarely on real links.
             // When the filename is not a link, lstat will return the same info as stat, but this also removes
             // any need for a further call to lstat to check if the file is a link.
             need_lstat = false;
diff --git a/src/corelib/io/qiodevice.cpp b/src/corelib/io/qiodevice.cpp
index 26e587d..68fb2bf 100644
--- a/src/corelib/io/qiodevice.cpp
+++ b/src/corelib/io/qiodevice.cpp
@@ -395,7 +395,10 @@ QIODevice::QIODevice(QIODevicePrivate &dd, QObject *parent)
 
 
 /*!
-    Destructs the QIODevice object.
+  The destructor is virtual, and QIODevice is an abstract base
+  class. This destructor does not call close(), but the subclass
+  destructor might. If you are in doubt, call close() before
+  destroying the QIODevice.
 */
 QIODevice::~QIODevice()
 {
diff --git a/src/corelib/io/qiodevice_p.h b/src/corelib/io/qiodevice_p.h
index 1dd51ea..8b77da5 100644
--- a/src/corelib/io/qiodevice_p.h
+++ b/src/corelib/io/qiodevice_p.h
@@ -68,7 +68,7 @@ QT_BEGIN_NAMESPACE
 #define QIODEVICE_BUFFERSIZE Q_INT64_C(16384)
 #endif
 
-// This is QIODevice's read buffer, optimised for read(), isEmpty() and getChar()
+// This is QIODevice's read buffer, optimized for read(), isEmpty() and getChar()
 class QIODevicePrivateLinearBuffer
 {
 public:
diff --git a/src/corelib/io/qprocess_symbian.cpp b/src/corelib/io/qprocess_symbian.cpp
index 003e781..5b283a5 100644
--- a/src/corelib/io/qprocess_symbian.cpp
+++ b/src/corelib/io/qprocess_symbian.cpp
@@ -1050,6 +1050,7 @@ bool QProcessPrivate::startDetached(const QString &program, const QStringList &a
 
         newProc->Resume();
         newProc->Close();
+        delete newProc;
         return true;
     }
 
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index edd6d2b..e6c5fb9 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -88,6 +88,12 @@
 #define CSIDL_APPDATA		0x001a	// <username>\Application Data
 #endif
 
+#ifdef Q_AUTOTEST_EXPORT
+#  define Q_AUTOTEST_EXPORT_HELPER Q_AUTOTEST_EXPORT
+#else
+#  define Q_AUTOTEST_EXPORT_HELPER static
+#endif
+
 // ************************************************************************
 // QConfFile
 
@@ -134,7 +140,7 @@ QT_BEGIN_INCLUDE_NAMESPACE
 # include <sys/mount.h>
 QT_END_INCLUDE_NAMESPACE
 
-static bool isLikelyToBeNfs(int handle)
+Q_AUTOTEST_EXPORT_HELPER bool qIsLikelyToBeNfs(int handle)
 {
     struct statfs buf;
     if (fstatfs(handle, &buf) != 0)
@@ -160,7 +166,7 @@ QT_END_INCLUDE_NAMESPACE
 #  define AUTOFSNG_SUPER_MAGIC  0x7d92b1a0
 # endif
 
-static bool isLikelyToBeNfs(int handle)
+Q_AUTOTEST_EXPORT_HELPER bool qIsLikelyToBeNfs(int handle)
 {
     struct statfs buf;
     if (fstatfs(handle, &buf) != 0)
@@ -177,7 +183,7 @@ QT_BEGIN_INCLUDE_NAMESPACE
 # include <sys/statvfs.h>
 QT_END_INCLUDE_NAMESPACE
 
-static bool isLikelyToBeNfs(int handle)
+Q_AUTOTEST_EXPORT_HELPER bool qIsLikelyToBeNfs(int handle)
 {
     struct statvfs buf;
     if (fstatvfs(handle, &buf) != 0)
@@ -189,7 +195,7 @@ static bool isLikelyToBeNfs(int handle)
 #endif
 }
 #else
-static inline bool isLikelyToBeNfs(int /* handle */)
+Q_AUTOTEST_EXPORT_HELPER inline bool qIsLikelyToBeNfs(int /* handle */)
 {
     return true;
 }
@@ -203,7 +209,7 @@ static bool unixLock(int handle, int lockType)
         now is to disable locking when we detect NFS (or AutoFS or
         CacheFS, which are probably wrapping NFS).
     */
-    if (isLikelyToBeNfs(handle))
+    if (qIsLikelyToBeNfs(handle))
         return false;
 
     struct flock fl;
@@ -1231,16 +1237,21 @@ QConfFileSettingsPrivate::~QConfFileSettingsPrivate()
         if (confFiles[i] && !confFiles[i]->ref.deref()) {
             if (confFiles[i]->size == 0) {
                 delete confFiles[i].take();
-            } else if (unusedCache) {
+            } else {
                 if (usedHash)
                     usedHash->remove(confFiles[i]->name);
-                QT_TRY {
-                    // compute a better size?
-                    unusedCache->insert(confFiles[i]->name, confFiles[i].data(),
-                                    10 + (confFiles[i]->originalKeys.size() / 4));
-                    confFiles[i].take();
-                } QT_CATCH(...) {
-                    // out of memory. Do not cache the file.
+                if (unusedCache) {
+                    QT_TRY {
+                        // compute a better size?
+                        unusedCache->insert(confFiles[i]->name, confFiles[i].data(),
+                                        10 + (confFiles[i]->originalKeys.size() / 4));
+                        confFiles[i].take();
+                    } QT_CATCH(...) {
+                        // out of memory. Do not cache the file.
+                        delete confFiles[i].take();
+                    }
+                } else {
+                    // unusedCache is gone - delete the entry to prevent a memory leak
                     delete confFiles[i].take();
                 }
             }
@@ -3506,7 +3517,7 @@ void QSettings::setPath(Format format, Scope scope, const QString &path)
     \threadsafe
 
     Registers a custom storage format. On success, returns a special
-    Format value that can then be passed to the QSettings constuctor.
+    Format value that can then be passed to the QSettings constructor.
     On failure, returns InvalidFormat.
 
     The \a extension is the file
diff --git a/src/corelib/kernel/qabstractitemmodel.cpp b/src/corelib/kernel/qabstractitemmodel.cpp
index 6e37aee..589d304 100644
--- a/src/corelib/kernel/qabstractitemmodel.cpp
+++ b/src/corelib/kernel/qabstractitemmodel.cpp
@@ -1197,7 +1197,7 @@ void QAbstractItemModelPrivate::columnsRemoved(const QModelIndex &parent,
     \l{QAbstractItemModel::}{endInsertRows()} must be called.
 
     \sa {Model Classes}, {Model Subclassing Reference}, QModelIndex,
-        QAbstractItemView, {Using drag & drop with item views},
+        QAbstractItemView, {Using drag and drop with item views},
         {Simple DOM Model Example}, {Simple Tree Model Example},
         {Editable Tree Model Example}, {Fetch More Example}
 */
@@ -1760,7 +1760,7 @@ QMimeData *QAbstractItemModel::mimeData(const QModelIndexList &indexes) const
     where to place the data. This can occur in a tree when data is dropped on
     a parent. Models will usually append the data to the parent in this case.
 
-    \sa supportedDropActions(), {Using drag & drop with item views}
+    \sa supportedDropActions(), {Using drag and drop with item views}
 */
 bool QAbstractItemModel::dropMimeData(const QMimeData *data, Qt::DropAction action,
                                       int row, int column, const QModelIndex &parent)
@@ -1797,7 +1797,7 @@ bool QAbstractItemModel::dropMimeData(const QMimeData *data, Qt::DropAction acti
     reimplement the dropMimeData() function to handle the additional
     operations.
 
-    \sa dropMimeData(), Qt::DropActions, {Using drag & drop with item
+    \sa dropMimeData(), Qt::DropActions, {Using drag and drop with item
     views}
 */
 Qt::DropActions QAbstractItemModel::supportedDropActions() const
@@ -1814,7 +1814,7 @@ Qt::DropActions QAbstractItemModel::supportedDropActions() const
     supportedDragActions() is used by QAbstractItemView::startDrag() as the
     default values when a drag occurs.
 
-    \sa Qt::DropActions, {Using drag & drop with item views}
+    \sa Qt::DropActions, {Using drag and drop with item views}
 */
 Qt::DropActions QAbstractItemModel::supportedDragActions() const
 {
@@ -1830,7 +1830,7 @@ Qt::DropActions QAbstractItemModel::supportedDragActions() const
 
     Sets the supported drag \a actions for the items in the model.
 
-    \sa supportedDragActions(), {Using drag & drop with item views}
+    \sa supportedDragActions(), {Using drag and drop with item views}
 */
 void QAbstractItemModel::setSupportedDragActions(Qt::DropActions actions)
 {
@@ -2636,8 +2636,6 @@ void QAbstractItemModel::endMoveRows()
     QAbstractItemModelPrivate::Change insertChange = d->changes.pop();
     QAbstractItemModelPrivate::Change removeChange = d->changes.pop();
 
-    d->itemsMoved(removeChange.parent, removeChange.first, removeChange.last, insertChange.parent, insertChange.first, Qt::Vertical);
-
     QModelIndex adjustedSource = removeChange.parent;
     QModelIndex adjustedDestination = insertChange.parent;
 
@@ -2648,6 +2646,8 @@ void QAbstractItemModel::endMoveRows()
     if (removeChange.needsAdjust)
       adjustedSource = createIndex(adjustedSource.row() + numMoved, adjustedSource.column(), adjustedSource.internalPointer());
 
+    d->itemsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first, Qt::Vertical);
+
     emit rowsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first);
     emit layoutChanged();
 }
@@ -2860,8 +2860,6 @@ void QAbstractItemModel::endMoveColumns()
     QAbstractItemModelPrivate::Change insertChange = d->changes.pop();
     QAbstractItemModelPrivate::Change removeChange = d->changes.pop();
 
-    d->itemsMoved(removeChange.parent, removeChange.first, removeChange.last, insertChange.parent, insertChange.first, Qt::Horizontal);
-
     QModelIndex adjustedSource = removeChange.parent;
     QModelIndex adjustedDestination = insertChange.parent;
 
@@ -2872,6 +2870,8 @@ void QAbstractItemModel::endMoveColumns()
     if (removeChange.needsAdjust)
       adjustedSource = createIndex(adjustedSource.row(), adjustedSource.column() + numMoved, adjustedSource.internalPointer());
 
+    d->itemsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first, Qt::Horizontal);
+
     emit columnsMoved(adjustedSource, removeChange.first, removeChange.last, adjustedDestination, insertChange.first);
     emit layoutChanged();
 }
diff --git a/src/corelib/kernel/qcoreapplication.cpp b/src/corelib/kernel/qcoreapplication.cpp
index d3f399b..5598187 100644
--- a/src/corelib/kernel/qcoreapplication.cpp
+++ b/src/corelib/kernel/qcoreapplication.cpp
@@ -406,11 +406,10 @@ QString qAppName()
     operations can call processEvents() to keep the application
     responsive.
 
-    Some Qt classes, such as QString, can be used without a
-    QCoreApplication object. However, in general, we recommend that
-    you create a QCoreApplication or a QApplication object in your \c
-    main() function as early as possible. exit() will not return
-    until the event loop exits; e.g., when quit() is called.
+    In general, we recommend that you create a QCoreApplication or
+    a QApplication object in your \c main() function as early as
+    possible. exit() will not return until the event loop exits;
+    e.g., when quit() is called.
 
     Several static convenience functions are also provided. The
     QCoreApplication object is available from instance(). Events can
diff --git a/src/corelib/kernel/qeventdispatcher_glib.cpp b/src/corelib/kernel/qeventdispatcher_glib.cpp
index 8390275..6fa2707 100644
--- a/src/corelib/kernel/qeventdispatcher_glib.cpp
+++ b/src/corelib/kernel/qeventdispatcher_glib.cpp
@@ -311,6 +311,10 @@ QEventDispatcherGlibPrivate::QEventDispatcherGlibPrivate(GMainContext *context)
         }
     }
 
+#if GLIB_CHECK_VERSION (2, 22, 0)
+    g_main_context_push_thread_default (mainContext);
+#endif
+
     // setup post event source
     postEventSource = reinterpret_cast<GPostEventSource *>(g_source_new(&postEventSourceFuncs,
                                                                         sizeof(GPostEventSource)));
@@ -389,6 +393,9 @@ QEventDispatcherGlib::~QEventDispatcherGlib()
     d->postEventSource = 0;
 
     Q_ASSERT(d->mainContext != 0);
+#if GLIB_CHECK_VERSION (2, 22, 0)
+    g_main_context_pop_thread_default (d->mainContext);
+#endif
     g_main_context_unref(d->mainContext);
     d->mainContext = 0;
 }
diff --git a/src/corelib/kernel/qeventdispatcher_symbian.cpp b/src/corelib/kernel/qeventdispatcher_symbian.cpp
index d8cc344..bb9bd01 100644
--- a/src/corelib/kernel/qeventdispatcher_symbian.cpp
+++ b/src/corelib/kernel/qeventdispatcher_symbian.cpp
@@ -975,9 +975,7 @@ bool QEventDispatcherSymbian::sendPostedEvents()
 
 inline void QEventDispatcherSymbian::addDeferredActiveObject(QActiveObject *object)
 {
-    if (m_deferredActiveObjects.isEmpty()) {
-        m_completeDeferredAOs->complete();
-    }
+    queueDeferredActiveObjectsCompletion();
     m_deferredActiveObjects.append(object);
 }
 
@@ -986,6 +984,11 @@ inline void QEventDispatcherSymbian::removeDeferredActiveObject(QActiveObject *o
     m_deferredActiveObjects.removeAll(object);
 }
 
+void QEventDispatcherSymbian::queueDeferredActiveObjectsCompletion()
+{
+    m_completeDeferredAOs->complete();
+}
+
 void QEventDispatcherSymbian::reactivateDeferredActiveObjects()
 {
     while (!m_deferredActiveObjects.isEmpty()) {
diff --git a/src/corelib/kernel/qeventdispatcher_symbian_p.h b/src/corelib/kernel/qeventdispatcher_symbian_p.h
index 1486db5..3615996 100644
--- a/src/corelib/kernel/qeventdispatcher_symbian_p.h
+++ b/src/corelib/kernel/qeventdispatcher_symbian_p.h
@@ -247,7 +247,9 @@ public:
 
     void addDeferredActiveObject(QActiveObject *object);
     void removeDeferredActiveObject(QActiveObject *object);
-    void reactivateDeferredActiveObjects();
+    void queueDeferredActiveObjectsCompletion();
+    // Can be overridden to activate local active objects too, but do call baseclass!
+    virtual void reactivateDeferredActiveObjects();
 
     inline int iterationCount() const { return m_iterationCount; }
 
diff --git a/src/corelib/kernel/qeventdispatcher_win.cpp b/src/corelib/kernel/qeventdispatcher_win.cpp
index 153ccdf..4eb0073 100644
--- a/src/corelib/kernel/qeventdispatcher_win.cpp
+++ b/src/corelib/kernel/qeventdispatcher_win.cpp
@@ -84,7 +84,8 @@ extern uint qGlobalPostedEventsCount();
 
 enum {
     WM_QT_SOCKETNOTIFIER = WM_USER,
-    WM_QT_SENDPOSTEDEVENTS = WM_USER + 1
+    WM_QT_SENDPOSTEDEVENTS = WM_USER + 1,
+    SendPostedEventsWindowsTimerId = ~1u
 };
 
 #if defined(Q_OS_WINCE)
@@ -353,10 +354,7 @@ public:
 
     // for controlling when to send posted events
     QAtomicInt serialNumber;
-    int lastSerialNumber;
-#ifndef Q_OS_WINCE
-    int lastMessageTime;
-#endif
+    int lastSerialNumber, sendPostedEventsWindowsTimerId;
     QAtomicInt wakeUps;
 
     // timers
@@ -381,11 +379,7 @@ public:
 
 QEventDispatcherWin32Private::QEventDispatcherWin32Private()
     : threadId(GetCurrentThreadId()), interrupt(false), internalHwnd(0), getMessageHook(0),
-      serialNumber(0), lastSerialNumber(0),
-#ifndef Q_OS_WINCE
-      lastMessageTime(0),
-#endif
-      wakeUps(0)
+      serialNumber(0), lastSerialNumber(0), sendPostedEventsWindowsTimerId(0), wakeUps(0)
 {
     resolveTimerAPI();
 }
@@ -492,20 +486,21 @@ LRESULT QT_WIN_CALLBACK qt_internal_proc(HWND hwnd, UINT message, WPARAM wp, LPA
             }
         }
         return 0;
-    } else if (message == WM_TIMER) {    
-        Q_ASSERT(d != 0);
-        d->sendTimerEvent(wp);
-        return 0;
-    } else if (message == WM_QT_SENDPOSTEDEVENTS) {
+    } else if (message == WM_QT_SENDPOSTEDEVENTS
+               // we also use a Windows timer to send posted events when the message queue is full
+               || (message == WM_TIMER
+                   && d->sendPostedEventsWindowsTimerId != 0
+                   && wp == d->sendPostedEventsWindowsTimerId)) {
         int localSerialNumber = d->serialNumber;
         if (localSerialNumber != d->lastSerialNumber) {
             d->lastSerialNumber = localSerialNumber;
-#ifndef Q_OS_WINCE
-            d->lastMessageTime = GetMessageTime();
-#endif
             QCoreApplicationPrivate::sendPostedEvents(0, 0, d->threadData);
         }
         return 0;
+    } else if (message == WM_TIMER) {
+        Q_ASSERT(d != 0);
+        d->sendTimerEvent(wp);
+        return 0;
     }
 
     return DefWindowProc(hwnd, message, wp, lp);
@@ -517,25 +512,36 @@ LRESULT QT_WIN_CALLBACK qt_GetMessageHook(int code, WPARAM wp, LPARAM lp)
         QEventDispatcherWin32 *q = qobject_cast<QEventDispatcherWin32 *>(QAbstractEventDispatcher::instance());
         Q_ASSERT(q != 0);
         if (q) {
+            MSG *msg = (MSG *) lp;
             QEventDispatcherWin32Private *d = q->d_func();
             int localSerialNumber = d->serialNumber;
-            MSG unused;
-            if ((HIWORD(GetQueueStatus(QS_INPUT | QS_RAWINPUT)) == 0
-                 && PeekMessage(&unused, 0, WM_TIMER, WM_TIMER, PM_NOREMOVE) == 0)
-#ifndef Q_OS_WINCE
-                || GetMessageTime() - d->lastMessageTime >= 10
-#endif
-                ) {
-                // no more input or timer events in the message queue or more than 10ms has elapsed since
-                // we send posted events, we can allow posted events to be sent now
+            if (HIWORD(GetQueueStatus(QS_TIMER | QS_INPUT | QS_RAWINPUT)) == 0) {
+                // no more input or timer events in the message queue, we can allow posted events to be sent normally now
+                if (d->sendPostedEventsWindowsTimerId != 0) {
+                    // stop the timer to send posted events, since we now allow the WM_QT_SENDPOSTEDEVENTS message
+                    KillTimer(d->internalHwnd, d->sendPostedEventsWindowsTimerId);
+                    d->sendPostedEventsWindowsTimerId = 0;
+                }
                 (void) d->wakeUps.fetchAndStoreRelease(0);
-                MSG *msg = (MSG *) lp;
                 if (localSerialNumber != d->lastSerialNumber
                     // if this message IS the one that triggers sendPostedEvents(), no need to post it again
                     && (msg->hwnd != d->internalHwnd
                         || msg->message != WM_QT_SENDPOSTEDEVENTS)) {
                     PostMessage(d->internalHwnd, WM_QT_SENDPOSTEDEVENTS, 0, 0);
                 }
+            } else if (d->sendPostedEventsWindowsTimerId == 0
+                       && localSerialNumber != d->lastSerialNumber
+                       // if this message IS the one that triggers sendPostedEvents(), no need to post it again
+                       && (msg->hwnd != d->internalHwnd
+                           || msg->message != WM_QT_SENDPOSTEDEVENTS)) {
+                // start a special timer to continue delivering posted events while
+                // there are still input and timer messages in the message queue
+                d->sendPostedEventsWindowsTimerId = SetTimer(d->internalHwnd,
+                                                             SendPostedEventsWindowsTimerId,
+                                                             0, // we specify zero, but Windows uses USER_TIMER_MINIMUM
+                                                             NULL);
+                // we don't check the return value of SetTimer()... if creating the timer failed, there's little
+                // we can do. we just have to accept that posted events will be starved
             }
         }
     }
diff --git a/src/corelib/kernel/qmimedata.cpp b/src/corelib/kernel/qmimedata.cpp
index bf4001a..899ca7b 100644
--- a/src/corelib/kernel/qmimedata.cpp
+++ b/src/corelib/kernel/qmimedata.cpp
@@ -249,7 +249,7 @@ QVariant QMimeDataPrivate::retrieveTypedData(const QString &format, QVariant::Ty
     \o  We can subclass QMimeData and reimplement hasFormat(),
         formats(), and retrieveData().
 
-    \o  If the drag and drop operation occurs withing a single
+    \o  If the drag and drop operation occurs within a single
         application, we can subclass QMimeData and add extra data in
         it, and use a qobject_cast() in the receiver's drop event
         handler. For example:
diff --git a/src/corelib/kernel/qtcore_eval.cpp b/src/corelib/kernel/qtcore_eval.cpp
index 78556c3..da76b74 100644
--- a/src/corelib/kernel/qtcore_eval.cpp
+++ b/src/corelib/kernel/qtcore_eval.cpp
@@ -90,14 +90,14 @@ static const char will_shutdown_now[] =
 
 static int qt_eval_is_supported()
 {
-    const char *const license_key = qt_eval_key_data + 12;
+    const volatile char *const license_key = qt_eval_key_data + 12;
 
     // fast fail
     if (!qt_eval_key_data[0] || !*license_key)
         return -1;
 
     // is this an unsupported evaluation?
-    const char* typecode = license_key;
+    const volatile char *typecode = license_key;
     int field = 2;
     for ( ; field && *typecode; ++typecode)
         if (*typecode == '-')
diff --git a/src/corelib/statemachine/qstatemachine.cpp b/src/corelib/statemachine/qstatemachine.cpp
index 4b371f7..6324cc9 100644
--- a/src/corelib/statemachine/qstatemachine.cpp
+++ b/src/corelib/statemachine/qstatemachine.cpp
@@ -178,7 +178,7 @@ QT_BEGIN_NAMESPACE
 
 QStateMachinePrivate::QStateMachinePrivate()
 {
-    QAbstractStatePrivate::isMachine = true;
+    isMachine = true;
 
     state = NotRunning;
     _startState = 0;
diff --git a/src/corelib/thread/qthread.cpp b/src/corelib/thread/qthread.cpp
index 69b70cb..6fb182b 100644
--- a/src/corelib/thread/qthread.cpp
+++ b/src/corelib/thread/qthread.cpp
@@ -482,8 +482,10 @@ int QThread::exec()
     Q_D(QThread);
     QMutexLocker locker(&d->mutex);
     d->data->quitNow = false;
-    if (d->exited)
+    if (d->exited) {
+        d->exited = false;
         return d->returnCode;
+    }
     locker.unlock();
 
     QEventLoop eventLoop;
diff --git a/src/corelib/thread/qthread_unix.cpp b/src/corelib/thread/qthread_unix.cpp
index a7601b6..e3b587d 100644
--- a/src/corelib/thread/qthread_unix.cpp
+++ b/src/corelib/thread/qthread_unix.cpp
@@ -97,6 +97,11 @@
 # define SCHED_IDLE    5
 #endif
 
+#if defined(Q_OS_DARWIN) || !defined(Q_OS_OPENBSD) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
+#define QT_HAS_THREAD_PRIORITY_SCHEDULING
+#endif
+
+
 QT_BEGIN_NAMESPACE
 
 #ifndef QT_NO_THREAD
@@ -142,6 +147,39 @@ static void destroy_current_thread_data_key()
 }
 Q_DESTRUCTOR_FUNCTION(destroy_current_thread_data_key)
 
+
+// Utility functions for getting, setting and clearing thread specific data.
+// In Symbian, TLS access is significantly faster than pthread_getspecific.
+// However Symbian does not have the thread destruction cleanup functionality
+// that pthread has, so pthread_setspecific is also used.
+static QThreadData *get_thread_data()
+{
+#ifdef Q_OS_SYMBIAN
+    return reinterpret_cast<QThreadData *>(Dll::Tls());
+#else
+    pthread_once(&current_thread_data_once, create_current_thread_data_key);
+    return reinterpret_cast<QThreadData *>(pthread_getspecific(current_thread_data_key));
+#endif
+}
+
+static void set_thread_data(QThreadData *data)
+{
+#ifdef Q_OS_SYMBIAN
+    qt_symbian_throwIfError(Dll::SetTls(data));
+#endif
+    pthread_once(&current_thread_data_once, create_current_thread_data_key);
+    pthread_setspecific(current_thread_data_key, data);
+}
+
+static void clear_thread_data()
+{
+#ifdef Q_OS_SYMBIAN
+    Dll::FreeTls();
+#endif
+    pthread_setspecific(current_thread_data_key, 0);
+}
+
+
 #ifdef Q_OS_SYMBIAN
 static void init_symbian_thread_handle(RThread &thread)
 {
@@ -158,26 +196,24 @@ static void init_symbian_thread_handle(RThread &thread)
 
 QThreadData *QThreadData::current()
 {
-    pthread_once(&current_thread_data_once, create_current_thread_data_key);
-
-    QThreadData *data = reinterpret_cast<QThreadData *>(pthread_getspecific(current_thread_data_key));
+    QThreadData *data = get_thread_data();
     if (!data) {
         void *a;
         if (QInternal::activateCallbacks(QInternal::AdoptCurrentThread, &a)) {
             QThread *adopted = static_cast<QThread*>(a);
             Q_ASSERT(adopted);
             data = QThreadData::get2(adopted);
-            pthread_setspecific(current_thread_data_key, data);
+            set_thread_data(data);
             adopted->d_func()->running = true;
             adopted->d_func()->finished = false;
             static_cast<QAdoptedThread *>(adopted)->init();
         } else {
             data = new QThreadData;
-            pthread_setspecific(current_thread_data_key, data);
             QT_TRY {
+                set_thread_data(data);
                 data->thread = new QAdoptedThread(data);
             } QT_CATCH(...) {
-                pthread_setspecific(current_thread_data_key, 0);
+                clear_thread_data();
                 data->deref();
                 data = 0;
                 QT_RETHROW;
@@ -268,8 +304,7 @@ void *QThreadPrivate::start(void *arg)
     User::SetCritical(User::EProcessCritical);
 #endif
 
-    pthread_once(&current_thread_data_once, create_current_thread_data_key);
-    pthread_setspecific(current_thread_data_key, data);
+    set_thread_data(data);
 
     data->ref();
     data->quitNow = false;
@@ -473,6 +508,7 @@ void QThread::usleep(unsigned long usecs)
     thread_sleep(&ti);
 }
 
+#ifdef QT_HAS_THREAD_PRIORITY_SCHEDULING
 // Does some magic and calculate the Unix scheduler priorities
 // sched_policy is IN/OUT: it must be set to a valid policy before calling this function
 // sched_priority is OUT only
@@ -503,6 +539,7 @@ static bool calculateUnixPriority(int priority, int *sched_policy, int *sched_pr
     *sched_priority = prio;
     return true;
 }
+#endif
 
 void QThread::start(Priority priority)
 {
@@ -523,7 +560,7 @@ void QThread::start(Priority priority)
 
     d->priority = priority;
 
-#if defined(Q_OS_DARWIN) || !defined(Q_OS_OPENBSD) && !defined(Q_OS_SYMBIAN) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
+#if defined(QT_HAS_THREAD_PRIORITY_SCHEDULING) && !defined(Q_OS_SYMBIAN)
 // ### Need to implement thread sheduling and priorities for symbian os. Implementation removed for now
     switch (priority) {
     case InheritPriority:
@@ -564,7 +601,7 @@ void QThread::start(Priority priority)
             break;
         }
     }
-#endif // _POSIX_THREAD_PRIORITY_SCHEDULING
+#endif // QT_HAS_THREAD_PRIORITY_SCHEDULING
 
 #ifdef Q_OS_SYMBIAN
     if (d->stackSize == 0)
@@ -727,7 +764,7 @@ void QThread::setPriority(Priority priority)
 
     // copied from start() with a few modifications:
 
-#if defined(Q_OS_DARWIN) || !defined(Q_OS_OPENBSD) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
+#ifdef QT_HAS_THREAD_PRIORITY_SCHEDULING
     int sched_policy;
     sched_param param;
 
diff --git a/src/corelib/tools/qbytearray.cpp b/src/corelib/tools/qbytearray.cpp
index b0c784e..fac0f45 100644
--- a/src/corelib/tools/qbytearray.cpp
+++ b/src/corelib/tools/qbytearray.cpp
@@ -1812,7 +1812,7 @@ QByteArray &QByteArray::replace(int pos, int len, const QByteArray &after)
         return *this;
     } else {
         QByteArray copy(after);
-        // ### optimise me
+        // ### optimize me
         remove(pos, len);
         return insert(pos, copy);
     }
@@ -1853,7 +1853,7 @@ QByteArray &QByteArray::replace(int pos, int len, const char *after, int alen)
     }
 }
 
-// ### optimise all other replace method, by offering
+// ### optimize all other replace method, by offering
 // QByteArray::replace(const char *before, int blen, const char *after, int alen)
 
 /*!
diff --git a/src/corelib/tools/qlocale.cpp b/src/corelib/tools/qlocale.cpp
index 6b1de5e..b817eb2 100644
--- a/src/corelib/tools/qlocale.cpp
+++ b/src/corelib/tools/qlocale.cpp
@@ -77,7 +77,7 @@ QT_END_NAMESPACE
 #include <qdebug.h>
 #include <time.h>
 
-#if defined(Q_OS_LINUX) && !defined(__UCLIBC__)
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
 #    include <fenv.h>
 #endif
 
@@ -1576,8 +1576,6 @@ QDataStream &operator>>(QDataStream &ds, QLocale &l)
        defaults to the default locale (see setDefault()).
     \endlist
 
-    The "C" locale is identical in behavior to \l{English}/\l{UnitedStates}.
-
     Use language() and country() to determine the actual language and
     country values used.
 
@@ -6637,7 +6635,7 @@ Q_CORE_EXPORT char *qdtoa ( double d, int mode, int ndigits, int *decpt, int *si
     _control87(MCW_EM, MCW_EM);
 #endif
 
-#if defined(Q_OS_LINUX) && !defined(__UCLIBC__)
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
     fenv_t envp;
     feholdexcept(&envp);
 #endif
@@ -6653,7 +6651,7 @@ Q_CORE_EXPORT char *qdtoa ( double d, int mode, int ndigits, int *decpt, int *si
 #endif //_M_X64
 #endif //Q_OS_WIN
 
-#if defined(Q_OS_LINUX) && !defined(__UCLIBC__)
+#if defined(__GLIBC__) && !defined(__UCLIBC__)
     fesetenv(&envp);
 #endif
 
@@ -7308,6 +7306,7 @@ Q_CORE_EXPORT char *qdtoa( double d, int mode, int ndigits, int *decpt, int *sig
 
 Q_CORE_EXPORT double qstrtod(const char *s00, const char **se, bool *ok)
 {
+    errno = 0;
     double ret = strtod((char*)s00, (char**)se);
     if (ok) {
       if((ret == 0.0l && errno == ERANGE)
diff --git a/src/corelib/tools/qlocale.h b/src/corelib/tools/qlocale.h
index 8b424bb..1af2cb4 100644
--- a/src/corelib/tools/qlocale.h
+++ b/src/corelib/tools/qlocale.h
@@ -114,7 +114,7 @@ class Q_CORE_EXPORT QLocale
     friend class QString;
     friend class QByteArray;
     friend class QIntValidator;
-    friend class QDoubleValidator;
+    friend class QDoubleValidatorPrivate;
     friend class QTextStream;
     friend class QTextStreamPrivate;
 
diff --git a/src/corelib/tools/qpoint.cpp b/src/corelib/tools/qpoint.cpp
index 66f06e9..c297709 100644
--- a/src/corelib/tools/qpoint.cpp
+++ b/src/corelib/tools/qpoint.cpp
@@ -438,8 +438,12 @@ QDebug operator<<(QDebug d, const QPointF &p)
 /*!
     \fn bool QPointF::isNull() const
 
-    Returns true if both the x and y coordinates are set to 0.0,
+    Returns true if both the x and y coordinates are set to +0.0;
     otherwise returns false.
+
+    \note Since this function treats +0.0 and -0.0 differently, points
+    with zero-valued coordinates where either or both values have a
+    negative sign are not defined to be null points.
 */
 
 
diff --git a/src/corelib/tools/qsharedpointer_impl.h b/src/corelib/tools/qsharedpointer_impl.h
index 4cce339..2895bba 100644
--- a/src/corelib/tools/qsharedpointer_impl.h
+++ b/src/corelib/tools/qsharedpointer_impl.h
@@ -378,6 +378,13 @@ namespace QtSharedPointer {
 
         inline ExternalRefCount() : d(0) { }
         inline ExternalRefCount(Qt::Initialization i) : Basic<T>(i) { }
+
+        inline ExternalRefCount(T *ptr) : Basic<T>(Qt::Uninitialized) // throws
+        { internalConstruct(ptr); }
+        template <typename Deleter>
+        inline ExternalRefCount(T *ptr, Deleter deleter) : Basic<T>(Qt::Uninitialized) // throws
+        { internalConstruct(ptr, deleter); }
+
         inline ExternalRefCount(const ExternalRefCount<T> &other) : Basic<T>(other), d(other.d)
         { if (d) ref(); }
         template <class X>
@@ -448,11 +455,12 @@ public:
     inline QSharedPointer() { }
     // inline ~QSharedPointer() { }
 
-    inline explicit QSharedPointer(T *ptr) : BaseClass(Qt::Uninitialized)
-    { BaseClass::internalConstruct(ptr); }
+    inline explicit QSharedPointer(T *ptr) : BaseClass(ptr) // throws
+    { }
 
     template <typename Deleter>
-    inline QSharedPointer(T *ptr, Deleter d) { BaseClass::internalConstruct(ptr, d); }
+    inline QSharedPointer(T *ptr, Deleter d) : BaseClass(ptr, d) // throws
+    { }
 
     inline QSharedPointer(const QSharedPointer<T> &other) : BaseClass(other) { }
     inline QSharedPointer<T> &operator=(const QSharedPointer<T> &other)
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp
index b2fe2da..63ebafb 100644
--- a/src/corelib/tools/qsimd.cpp
+++ b/src/corelib/tools/qsimd.cpp
@@ -135,7 +135,7 @@ static inline uint detectProcessorFeatures()
 #if defined(QT_HAVE_IWMMXT)
     // runtime detection only available when running as a previlegied process
     features = IWMMXT;
-#elif defined(QT_HAVE_NEON)
+#elif defined(QT_ALWAYS_HAVE_NEON)
     features = NEON;
 #endif
 
diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h
index 664543b..2dbed76 100644
--- a/src/corelib/tools/qsimd_p.h
+++ b/src/corelib/tools/qsimd_p.h
@@ -87,9 +87,13 @@ QT_BEGIN_HEADER
 #include <tmmintrin.h>
 #endif
 
-// SSE4.1 and SSE4.2 intrinsics
-#if (defined(QT_HAVE_SSE4_1) || defined(QT_HAVE_SSE4_2)) && (defined(__SSE4_1__) || defined(Q_CC_MSVC))
+// SSE4.1 intrinsics
+#if defined(QT_HAVE_SSE4_1) && (defined(__SSE4_1__) || defined(Q_CC_MSVC))
 #include <smmintrin.h>
+#endif
+
+// SSE4.2 intrinsics
+#if defined(QT_HAVE_SSE4_2) && (defined(__SSE4_2__) || defined(Q_CC_MSVC))
 #include <nmmintrin.h>
 #endif
 
@@ -105,7 +109,8 @@ QT_BEGIN_HEADER
 #endif // defined(QT_HAVE_SSE2) && (defined(__SSE2__) || defined(Q_CC_MSVC))
 
 // NEON intrinsics
-#if defined(QT_HAVE_NEON)
+#if defined __ARM_NEON__
+#define QT_ALWAYS_HAVE_NEON
 #include <arm_neon.h>
 #endif
 
diff --git a/src/corelib/tools/qsize.cpp b/src/corelib/tools/qsize.cpp
index 20ac344..12287ab 100644
--- a/src/corelib/tools/qsize.cpp
+++ b/src/corelib/tools/qsize.cpp
@@ -492,9 +492,13 @@ QDebug operator<<(QDebug dbg, const QSize &s) {
 /*!
     \fn bool QSizeF::isNull() const
 
-    Returns true if both the width and height is 0; otherwise returns
+    Returns true if both the width and height are +0.0; otherwise returns
     false.
 
+    \note Since this function treats +0.0 and -0.0 differently, sizes with
+    zero width and height where either or both values have a negative
+    sign are not defined to be null sizes.
+
     \sa isValid(), isEmpty()
 */
 
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 8083aee..114c4ee 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -567,7 +567,7 @@ const QString::Null QString::null = { };
     strings from a string list that contain a particular substring or
     that match a particular QRegExp using the QStringList::filter()
     function.
-:
+
     \section1 Querying String Data
 
     If you want to see if a QString starts or ends with a particular
@@ -3573,7 +3573,7 @@ static QByteArray toLatin1_helper(const QChar *data, int length)
             }
             length = length % 16;
         }
-#elif QT_HAVE_NEON
+#elif defined(QT_ALWAYS_HAVE_NEON)
         // Refer to the documentation of the SSE2 implementation
         // this use eactly the same method as for SSE except:
         // 1) neon has unsigned comparison