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

45 files changed, 389 insertions, 181 deletions

diff --git a/src/corelib/global/global.pri b/src/corelib/global/global.pri
index b916b4d..2505e72 100644
--- a/src/corelib/global/global.pri
+++ b/src/corelib/global/global.pri
@@ -19,7 +19,7 @@ INCLUDEPATH += $$QT_BUILD_TREE/src/corelib/global
 # Only used on platforms with CONFIG += precompile_header
 PRECOMPILED_HEADER = global/qt_pch.h
 
-linux*-g++*:!static {
+linux*:!static {
    QMAKE_LFLAGS += -Wl,-e,qt_core_boilerplate
    prog=$$quote(if (/program interpreter: (.*)]/) { print $1; })
    DEFINES += ELF_INTERPRETER=\\\"$$system(readelf -l /bin/ls | perl -n -e \'$$prog\')\\\"
diff --git a/src/corelib/global/qlibraryinfo.cpp b/src/corelib/global/qlibraryinfo.cpp
index ea7e2e4..b4f5d0f 100644
--- a/src/corelib/global/qlibraryinfo.cpp
+++ b/src/corelib/global/qlibraryinfo.cpp
@@ -508,6 +508,14 @@ void qt_core_boilerplate()
            "Contact: Nokia Corporation (qt-info@nokia.com)\n"
            "\n"
            "Build key:           " QT_BUILD_KEY "\n"
+           "Compat build key:    "
+#ifdef QT_BUILD_KEY_COMPAT
+           "| " QT_BUILD_KEY_COMPAT " "
+#endif
+#ifdef QT_BUILD_KEY_COMPAT2
+           "| " QT_BUILD_KEY_COMPAT2 " "
+#endif
+           "|\n"
            "Build date:          %s\n"
            "Installation prefix: %s\n"
            "Library path:        %s\n"
@@ -517,6 +525,9 @@ void qt_core_boilerplate()
            qt_configure_libraries_path_str + 12,
            qt_configure_headers_path_str + 12);
 
+    extern void qDumpCPUFeatures();
+    qDumpCPUFeatures();
+
 #ifdef QT_EVAL
     extern void qt_core_eval_init(uint);
     qt_core_eval_init(1);
diff --git a/src/corelib/plugin/qlibrary.cpp b/src/corelib/plugin/qlibrary.cpp
index 0f99948..a9ae2ab 100644
--- a/src/corelib/plugin/qlibrary.cpp
+++ b/src/corelib/plugin/qlibrary.cpp
@@ -790,10 +790,13 @@ bool QLibraryPrivate::isPlugin(QSettings *settings)
             .arg(qt_version&0xff)
             .arg(debug ? QLatin1String("debug") : QLatin1String("release"));
     } else if (key != QT_BUILD_KEY
+               // we may have some compatibility keys, try them too:
 #ifdef QT_BUILD_KEY_COMPAT
-               // be sure to load plugins using an older but compatible build key
                && key != QT_BUILD_KEY_COMPAT
 #endif
+#ifdef QT_BUILD_KEY_COMPAT2
+               && key != QT_BUILD_KEY_COMPAT2
+#endif
                ) {
         if (qt_debug_component()) {
             qWarning("In %s:\n"
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h
index 0777f06..c7e4bc1 100644
--- a/src/corelib/tools/qhash.h
+++ b/src/corelib/tools/qhash.h
@@ -589,10 +589,11 @@ template <class Key, class T>
 Q_INLINE_TEMPLATE QHash<Key, T> &QHash<Key, T>::operator=(const QHash<Key, T> &other)
 {
     if (d != other.d) {
-        other.d->ref.ref();
+        QHashData *o = other.d;
+        o->ref.ref();
         if (!d->ref.deref())
             freeData(d);
-        d = other.d;
+        d = o;
         if (!d->sharable)
             detach_helper();
     }
diff --git a/src/corelib/tools/qlinkedlist.h b/src/corelib/tools/qlinkedlist.h
index d145fe3..9b3efa3 100644
--- a/src/corelib/tools/qlinkedlist.h
+++ b/src/corelib/tools/qlinkedlist.h
@@ -312,10 +312,11 @@ template <typename T>
 QLinkedList<T> &QLinkedList<T>::operator=(const QLinkedList<T> &l)
 {
     if (d != l.d) {
-        l.d->ref.ref();
+        QLinkedListData *o = l.d;
+        o->ref.ref();
         if (!d->ref.deref())
             free(d);
-        d = l.d;
+        d = o;
         if (!d->sharable)
             detach_helper();
     }
diff --git a/src/corelib/tools/qlist.h b/src/corelib/tools/qlist.h
index 722744c..d843cbe 100644
--- a/src/corelib/tools/qlist.h
+++ b/src/corelib/tools/qlist.h
@@ -424,10 +424,11 @@ template <typename T>
 Q_INLINE_TEMPLATE QList<T> &QList<T>::operator=(const QList<T> &l)
 {
     if (d != l.d) {
-        l.d->ref.ref();
+        QListData::Data *o = l.d;
+        o->ref.ref();
         if (!d->ref.deref())
             free(d);
-        d = l.d;
+        d = o;
         if (!d->sharable)
             detach_helper();
     }
diff --git a/src/corelib/tools/qmap.h b/src/corelib/tools/qmap.h
index e4b73a1..1c2aad3 100644
--- a/src/corelib/tools/qmap.h
+++ b/src/corelib/tools/qmap.h
@@ -426,10 +426,11 @@ template <class Key, class T>
 Q_INLINE_TEMPLATE QMap<Key, T> &QMap<Key, T>::operator=(const QMap<Key, T> &other)
 {
     if (d != other.d) {
-        other.d->ref.ref();
+        QMapData* o = other.d;
+        o->ref.ref();
         if (!d->ref.deref())
             freeData(d);
-        d = other.d;
+        d = o;
         if (!d->sharable)
             detach_helper();
     }
diff --git a/src/corelib/tools/qshareddata.h b/src/corelib/tools/qshareddata.h
index 7e9934d..6483c90 100644
--- a/src/corelib/tools/qshareddata.h
+++ b/src/corelib/tools/qshareddata.h
@@ -95,9 +95,10 @@ public:
         if (o.d != d) {
             if (o.d)
                 o.d->ref.ref();
-            if (d && !d->ref.deref())
-                delete d;
+            T *old = d;
             d = o.d;
+            if (old && !old->ref.deref())
+                delete old;
         }
         return *this;
     }
@@ -105,9 +106,10 @@ public:
         if (o != d) {
             if (o)
                 o->ref.ref();
-            if (d && !d->ref.deref())
-                delete d;
+            T *old = d;
             d = o;
+            if (old && !old->ref.deref())
+                delete old;
         }
         return *this;
     }
@@ -174,9 +176,10 @@ public:
         if (o.d != d) {
             if (o.d)
                 o.d->ref.ref();
-            if (d && !d->ref.deref())
-                delete d;
+            T *old = d;
             d = o.d;
+            if (old && !old->ref.deref())
+                delete old;
         }
         return *this;
     }
@@ -184,9 +187,10 @@ public:
         if (o != d) {
             if (o)
                 o->ref.ref();
-            if (d && !d->ref.deref())
-                delete d;
+            T *old = d;
             d = o;
+            if (old && !old->ref.deref())
+                delete old;
         }
         return *this;
     }
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp
index 8005d7d..68ab033 100644
--- a/src/corelib/tools/qsimd.cpp
+++ b/src/corelib/tools/qsimd.cpp
@@ -41,6 +41,7 @@
 
 #include "qsimd_p.h"
 #include <QByteArray>
+#include <stdio.h>
 
 #if defined(Q_OS_WINCE)
 #include <windows.h>
@@ -50,15 +51,20 @@
 #include <intrin.h>
 #endif
 
+#if defined(Q_OS_LINUX) && defined(__arm__)
+#include "private/qcore_unix_p.h"
+
+#include <asm/hwcap.h>
+#include <linux/auxvec.h>
+#endif
+
 QT_BEGIN_NAMESPACE
 
-uint qDetectCPUFeatures()
+#if defined (Q_OS_WINCE)
+static inline uint detectProcessorFeatures()
 {
-    static uint features = 0xffffffff;
-    if (features != 0xffffffff)
-        return features;
+    uint features = 0;
 
-#if defined (Q_OS_WINCE)
 #if defined (ARM)
     if (IsProcessorFeaturePresent(PF_ARM_INTEL_WMMX)) {
         features = IWMMXT;
@@ -78,22 +84,57 @@ uint qDetectCPUFeatures()
 #endif
     features = 0;
     return features;
-#elif defined(QT_HAVE_IWMMXT)
+}
+
+#elif defined(__arm__) || defined(__arm) || defined(QT_HAVE_IWMMXT) || defined(QT_HAVE_NEON)
+static inline uint detectProcessorFeatures()
+{
+    uint features = 0;
+
+#if defined(Q_OS_LINUX)
+    int auxv = ::qt_safe_open("/proc/self/auxv", O_RDONLY);
+    if (auxv != -1) {
+        unsigned long vector[64];
+        int nread;
+        while (features == 0) {
+            nread = ::qt_safe_read(auxv, (char *)vector, sizeof vector);
+            if (nread <= 0) {
+                // EOF or error
+                break;
+            }
+
+            int max = nread / (sizeof vector[0]);
+            for (int i = 0; i < max; i += 2)
+                if (vector[i] == AT_HWCAP) {
+                    if (vector[i+1] & HWCAP_IWMMXT)
+                        features |= IWMMXT;
+                    if (vector[i+1] & HWCAP_NEON)
+                        features |= NEON;
+                    break;
+                }
+        }
+
+        ::qt_safe_close(auxv);
+        return features;
+    }
+    // fall back if /proc/self/auxv wasn't found
+#endif
+
+#if defined(QT_HAVE_IWMMXT)
     // runtime detection only available when running as a previlegied process
-    static const bool doIWMMXT = !qgetenv("QT_NO_IWMMXT").toInt();
-    features = doIWMMXT ? IWMMXT : 0;
-    return features;
+    features = IWMMXT;
 #elif defined(QT_HAVE_NEON)
-    static const bool doNEON = !qgetenv("QT_NO_NEON").toInt();
-    features = doNEON ? NEON : 0;
+    features = NEON;
+#endif
+
     return features;
-#else
-    features = 0;
-#if defined(__x86_64__) || defined(Q_OS_WIN64)
-    features = MMX|SSE|SSE2|CMOV;
-#elif defined(__ia64__)
-    features = MMX|SSE|SSE2;
+}
+
 #elif defined(__i386__) || defined(_M_IX86)
+static inline uint detectProcessorFeatures()
+{
+    uint features = 0;
+
     unsigned int extended_result = 0;
     unsigned int feature_result = 0;
     uint result = 0;
@@ -149,6 +190,7 @@ uint qDetectCPUFeatures()
         :
         : "%eax", "%ecx", "%edx"
         );
+
 #elif defined (Q_OS_WIN)
     _asm {
         push eax
@@ -210,6 +252,7 @@ uint qDetectCPUFeatures()
     }
 #endif
 
+
     // result now contains the standard feature bits
     if (result & (1u << 15))
         features |= CMOV;
@@ -236,9 +279,13 @@ uint qDetectCPUFeatures()
     if (feature_result & (1u << 28))
         features |= AVX;
 
-#endif // i386
+    return features;
+}
 
-#if defined(__x86_64__) || defined(Q_OS_WIN64)
+#elif defined(__x86_64) || defined(Q_OS_WIN64)
+static inline uint detectProcessorFeatures()
+{
+    uint features = MMX|SSE|SSE2|CMOV;
     uint feature_result = 0;
 
 #if defined(Q_CC_GNU)
@@ -282,33 +329,97 @@ uint qDetectCPUFeatures()
         features |= SSE4_2;
     if (feature_result & (1u << 28))
         features |= AVX;
-#endif // x86_64
 
-#if defined(QT_HAVE_MMX)
-    if (qgetenv("QT_NO_MMX").toInt())
-        features ^= MMX;
-#endif
-    if (qgetenv("QT_NO_MMXEXT").toInt())
-        features ^= MMXEXT;
+    return features;
+}
 
-#if defined(QT_HAVE_3DNOW)
-    if (qgetenv("QT_NO_3DNOW").toInt())
-        features ^= MMX3DNOW;
-#endif
-    if (qgetenv("QT_NO_3DNOWEXT").toInt())
-        features ^= MMX3DNOWEXT;
+#elif defined(__ia64__)
+static inline uint detectProcessorFeatures()
+{
+    return MMX|SSE|SSE2;
+}
 
-#if defined(QT_HAVE_SSE)
-    if (qgetenv("QT_NO_SSE").toInt())
-        features ^= SSE;
-#endif
-#if defined(QT_HAVE_SSE2)
-    if (qgetenv("QT_NO_SSE2").toInt())
-        features ^= SSE2;
+#else
+static inline uint detectProcessorFeatures()
+{
+    return 0;
+}
 #endif
 
+/*
+ * Use kdesdk/scripts/generate_string_table.pl to update the table below.
+ * Here's the data (don't forget the ONE leading space):
+ mmx
+ mmxext
+ mmx3dnow
+ mmx3dnowext
+ sse
+ sse2
+ cmov
+ iwmmxt
+ neon
+ sse3
+ ssse3
+ sse4.1
+ sse4.2
+ avx
+  */
+
+// begin generated
+static const char features_string[] =
+    " mmx\0"
+    " mmxext\0"
+    " mmx3dnow\0"
+    " mmx3dnowext\0"
+    " sse\0"
+    " sse2\0"
+    " cmov\0"
+    " iwmmxt\0"
+    " neon\0"
+    " sse3\0"
+    " ssse3\0"
+    " sse4.1\0"
+    " sse4.2\0"
+    " avx\0"
+    "\0";
+
+static const int features_indices[] = {
+       0,    5,   13,   23,   36,   41,   47,   53,
+      61,   67,   73,   80,   88,   96,   -1
+};
+// end generated
+
+const int features_count = (sizeof features_indices - 1) / (sizeof features_indices[0]);
+
+uint qDetectCPUFeatures()
+{
+    static QBasicAtomicInt features = Q_BASIC_ATOMIC_INITIALIZER(-1);
+    if (features != -1)
+        return features;
+
+    uint f = detectProcessorFeatures();
+    QByteArray disable = qgetenv("QT_NO_CPU_FEATURE");
+    if (!disable.isEmpty()) {
+        disable.prepend(' ');
+        for (int i = 0; i < features_count; ++i) {
+            if (disable.contains(features_string + features_indices[i]))
+                f &= ~(1 << i);
+        }
+    }
+
+    features = f;
     return features;
-#endif
+}
+
+void qDumpCPUFeatures()
+{
+    uint features = qDetectCPUFeatures();
+    printf("Processor features: ");
+    for (int i = 0; i < features_count; ++i) {
+        if (features & (1 << i))
+            printf("%s", features_string + features_indices[i]);
+    }
+    puts("");
 }
 
 QT_END_NAMESPACE
diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h
index a3148fb..2626657 100644
--- a/src/corelib/tools/qsimd_p.h
+++ b/src/corelib/tools/qsimd_p.h
@@ -85,6 +85,7 @@ QT_BEGIN_HEADER
 // SSE4.1 and SSE4.2 intrinsics
 #if (defined(QT_HAVE_SSE4_1) || defined(QT_HAVE_SSE4_2)) && (defined(__SSE4_1__) || defined(Q_CC_MSVC))
 #include <smmintrin.h>
+#include <nmmintrin.h>
 #endif
 
 // AVX intrinsics
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 2fd9a0b..d940bf8 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -173,7 +173,7 @@ static int ucstricmp(const ushort *a, const ushort *ae, const uchar *b)
     return 1;
 }
 
-// Unicode case-insensitive comparison
+// Unicode case-sensitive comparison
 static int ucstrcmp(const QChar *a, int alen, const QChar *b, int blen)
 {
     if (a == b && alen == blen)
@@ -202,22 +202,55 @@ static int ucstrnicmp(const ushort *a, const ushort *b, int l)
     return ucstricmp(a, a + l, b, b + l);
 }
 
+// Benchmarking indicates that doing memcmp is much slower than
+// executing the comparison ourselves.
+//
+// The profiling was done on a population of calls to qMemEquals, generated
+// during a run of the demo browser. The profile of the data (32-bit x86
+// Linux) was:
+//
+//  total number of comparisons: 21353
+//  longest string compared: 95
+//  average comparison length: 14.8786
+//  cache-line crosses: 5661 (13.3%)
+//  alignment histogram:
+//   0xXXX0 = 512 (1.2%) strings, 0 (0.0%) of which same-aligned
+//   0xXXX2 = 15087 (35.3%) strings, 5145 (34.1%) of which same-aligned
+//   0xXXX4 = 525 (1.2%) strings, 0 (0.0%) of which same-aligned
+//   0xXXX6 = 557 (1.3%) strings, 6 (1.1%) of which same-aligned
+//   0xXXX8 = 509 (1.2%) strings, 0 (0.0%) of which same-aligned
+//   0xXXXa = 24358 (57.0%) strings, 9901 (40.6%) of which same-aligned
+//   0xXXXc = 557 (1.3%) strings, 0 (0.0%) of which same-aligned
+//   0xXXXe = 601 (1.4%) strings, 15 (2.5%) of which same-aligned
+//   total  = 42706 (100%) strings, 15067 (35.3%) of which same-aligned
+//
+// 92% of the strings have alignment of 2 or 10, which is due to malloc on
+// 32-bit Linux returning values aligned to 8 bytes, and offsetof(array, QString::Data) == 18.
+//
+// The profile on 64-bit will be different since offsetof(array, QString::Data) == 26.
+//
+// The benchmark results were, for a Core-i7 @ 2.67 GHz 32-bit, compiled with -O3 -funroll-loops:
+//   16-bit loads only:           872,301 CPU ticks [Qt 4.5 / memcmp]
+//   32- and 16-bit loads:        773,362 CPU ticks [Qt 4.6]
+//   SSE2 "movdqu" 128-bit loads: 618,736 CPU ticks
+//   SSE3 "lddqu" 128-bit loads:  619,954 CPU ticks
+//   SSSE3 "palignr" corrections: 852,147 CPU ticks
+//   SSE4.2 "pcmpestrm":          738,702 CPU ticks
+//
+// The same benchmark on an Atom N450 @ 1.66 GHz, is:
+//  16-bit loads only:            2,185,882 CPU ticks
+//  32- and 16-bit loads:         1,805,060 CPU ticks
+//  SSE2 "movdqu" 128-bit loads:  2,529,843 CPU ticks
+//  SSE3 "lddqu" 128-bit loads:   2,514,858 CPU ticks
+//  SSSE3 "palignr" corrections:  2,160,325 CPU ticks
+//  SSE4.2 not available
+//
+// The conclusion we reach is that alignment the SSE2 unaligned code can gain
+// 20% improvement in performance in some systems, but suffers a penalty due
+// to the unaligned loads on others.
+
 static bool qMemEquals(const quint16 *a, const quint16 *b, int length)
 {
-    // Benchmarking indicates that doing memcmp is much slower than
-    // executing the comparison ourselves.
-    // To make it even faster, we do a 32-bit comparison, comparing
-    // twice the amount of data as a normal word-by-word comparison.
-    //
-    // Benchmarking results on a 2.33 GHz Core2 Duo, with a 64-QChar
-    // block of data, with 4194304 iterations (per iteration):
-    //    operation             usec            cpu ticks
-    //     memcmp                330               710
-    //     16-bit                 79             167-171
-    //  32-bit aligned            49             105-109
-    //
-    // Testing also indicates that unaligned 32-bit loads are as
-    // performant as 32-bit aligned.
     if (a == b || !length)
         return true;
 
diff --git a/src/corelib/tools/qstring.h b/src/corelib/tools/qstring.h
index e52f59f..06e4d47 100644
--- a/src/corelib/tools/qstring.h
+++ b/src/corelib/tools/qstring.h
@@ -614,6 +614,7 @@ private:
         ushort asciiCache : 1;
         ushort capacity : 1;
         ushort reserved : 11;
+        // ### Qt5: try to ensure that "array" is aligned to 16 bytes on both 32- and 64-bit
         ushort array[1];
     };
     static Data shared_null;
diff --git a/src/corelib/tools/qvector.h b/src/corelib/tools/qvector.h
index c2e2485..b762b8a 100644
--- a/src/corelib/tools/qvector.h
+++ b/src/corelib/tools/qvector.h
@@ -377,10 +377,11 @@ inline void QVector<T>::replace(int i, const T &t)
 template <typename T>
 QVector<T> &QVector<T>::operator=(const QVector<T> &v)
 {
-    v.d->ref.ref();
+    QVectorData *o = v.d;
+    o->ref.ref();
     if (!d->ref.deref())
         free(p);
-    d = v.d;
+    d = o;
     if (!d->sharable)
         detach_helper();
     return *this;
diff --git a/src/declarative/debugger/qdeclarativedebug.cpp b/src/declarative/debugger/qdeclarativedebug.cpp
index 154df51..1ffe441 100644
--- a/src/declarative/debugger/qdeclarativedebug.cpp
+++ b/src/declarative/debugger/qdeclarativedebug.cpp
@@ -340,6 +340,8 @@ void QDeclarativeEngineDebugPrivate::message(const QByteArray &data)
         if (!watch)
             return;
         emit watch->valueChanged(name, value);
+    } else if (type == "OBJECT_CREATED") {
+        emit q_func()->newObjects();
     }
 }
 
diff --git a/src/declarative/debugger/qdeclarativedebug_p.h b/src/declarative/debugger/qdeclarativedebug_p.h
index 2e79c5d..f0fc488 100644
--- a/src/declarative/debugger/qdeclarativedebug_p.h
+++ b/src/declarative/debugger/qdeclarativedebug_p.h
@@ -99,6 +99,9 @@ public:
     bool resetBindingForObject(int objectDebugId, const QString &propertyName);
     bool setMethodBody(int objectDebugId, const QString &methodName, const QString &methodBody);
 
+Q_SIGNALS:
+    void newObjects();
+
 private:
     Q_DECLARE_PRIVATE(QDeclarativeEngineDebug)
 };
diff --git a/src/declarative/graphicsitems/qdeclarativelistview.cpp b/src/declarative/graphicsitems/qdeclarativelistview.cpp
index ec1b6cf..2e2e08c 100644
--- a/src/declarative/graphicsitems/qdeclarativelistview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativelistview.cpp
@@ -983,7 +983,7 @@ void QDeclarativeListViewPrivate::updateSections()
 void QDeclarativeListViewPrivate::updateCurrentSection()
 {
     if (!sectionCriteria || visibleItems.isEmpty()) {
-        currentSection = QString();
+        currentSection.clear();
         return;
     }
     int index = 0;
diff --git a/src/declarative/graphicsitems/qdeclarativepathview.cpp b/src/declarative/graphicsitems/qdeclarativepathview.cpp
index 535fb90..4b97505 100644
--- a/src/declarative/graphicsitems/qdeclarativepathview.cpp
+++ b/src/declarative/graphicsitems/qdeclarativepathview.cpp
@@ -480,7 +480,8 @@ void QDeclarativePathView::setModel(const QVariant &model)
         connect(d->model, SIGNAL(modelReset()), this, SLOT(modelReset()));
         connect(d->model, SIGNAL(createdItem(int, QDeclarativeItem*)), this, SLOT(createdItem(int,QDeclarativeItem*)));
     }
-    d->offset = qmlMod(d->offset, qreal(d->model->count()));
+    if (d->model->count())
+        d->offset = qmlMod(d->offset, qreal(d->model->count()));
     if (d->offset < 0)
         d->offset = d->model->count() + d->offset;
     d->regenerate();
diff --git a/src/declarative/graphicsitems/qdeclarativetext.cpp b/src/declarative/graphicsitems/qdeclarativetext.cpp
index fcd112e..b96b43c 100644
--- a/src/declarative/graphicsitems/qdeclarativetext.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetext.cpp
@@ -1218,7 +1218,7 @@ void QDeclarativeText::mousePressEvent(QGraphicsSceneMouseEvent *event)
 
     if (!d->richText || !d->doc || d->doc->documentLayout()->anchorAt(event->pos()).isEmpty()) {
         event->setAccepted(false);
-        d->activeLink = QString();
+        d->activeLink.clear();
     } else {
         d->activeLink = d->doc->documentLayout()->anchorAt(event->pos());
     }
diff --git a/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp b/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
index 764676a..50a0a33 100644
--- a/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
+++ b/src/declarative/graphicsitems/qdeclarativevisualitemmodel.cpp
@@ -238,20 +238,6 @@ QString QDeclarativeVisualItemModel::stringValue(int index, const QString &name)
     return QDeclarativeEngine::contextForObject(d->children.at(index).item)->contextProperty(name).toString();
 }
 
-QVariant QDeclarativeVisualItemModel::evaluate(int index, const QString &expression, QObject *objectContext)
-{
-    Q_D(QDeclarativeVisualItemModel);
-    if (index < 0 || index >= d->children.count())
-        return QVariant();
-    QDeclarativeContext *ccontext = qmlContext(this);
-    QDeclarativeContext *ctxt = new QDeclarativeContext(ccontext);
-    ctxt->setContextObject(d->children.at(index).item);
-    QDeclarativeExpression e(ctxt, objectContext, expression);
-    QVariant value = e.evaluate();
-    delete ctxt;
-    return value;
-}
-
 int QDeclarativeVisualItemModel::indexOf(QDeclarativeItem *item, QObject *) const
 {
     Q_D(const QDeclarativeVisualItemModel);
@@ -728,6 +714,7 @@ void QDeclarativeVisualDataModel::setModel(const QVariant &model)
         QObject::disconnect(d->m_abstractItemModel, SIGNAL(rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int)),
                             this, SLOT(_q_rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int)));
         QObject::disconnect(d->m_abstractItemModel, SIGNAL(modelReset()), this, SLOT(_q_modelReset()));
+        d->m_abstractItemModel = 0;
     } else if (d->m_visualItemModel) {
         QObject::disconnect(d->m_visualItemModel, SIGNAL(itemsInserted(int,int)),
                          this, SIGNAL(itemsInserted(int,int)));
@@ -1167,38 +1154,6 @@ QString QDeclarativeVisualDataModel::stringValue(int index, const QString &name)
     return val;
 }
 
-QVariant QDeclarativeVisualDataModel::evaluate(int index, const QString &expression, QObject *objectContext)
-{
-    Q_D(QDeclarativeVisualDataModel);
-    if (d->m_visualItemModel)
-        return d->m_visualItemModel->evaluate(index, expression, objectContext);
-
-    if ((!d->m_listModelInterface && !d->m_abstractItemModel) || !d->m_delegate)
-        return QVariant();
-
-    QVariant value;
-    QObject *nobj = d->m_cache.item(index);
-    if (nobj) {
-        QDeclarativeItem *item = qobject_cast<QDeclarativeItem *>(nobj);
-        if (item) {
-            QDeclarativeExpression e(qmlContext(item), objectContext, expression);
-            value = e.evaluate();
-        }
-    } else {
-        QDeclarativeContext *ccontext = d->m_context;
-        if (!ccontext) ccontext = qmlContext(this);
-        QDeclarativeContext *ctxt = new QDeclarativeContext(ccontext);
-        QDeclarativeVisualDataModelData *data = new QDeclarativeVisualDataModelData(index, this);
-        ctxt->setContextObject(data);
-        QDeclarativeExpression e(ctxt, objectContext, expression);
-        value = e.evaluate();
-        delete data;
-        delete ctxt;
-    }
-
-    return value;
-}
-
 int QDeclarativeVisualDataModel::indexOf(QDeclarativeItem *item, QObject *) const
 {
     QVariant val = QDeclarativeEngine::contextForObject(item)->contextProperty(QLatin1String("index"));
diff --git a/src/declarative/graphicsitems/qdeclarativevisualitemmodel_p.h b/src/declarative/graphicsitems/qdeclarativevisualitemmodel_p.h
index d5c0de2..50d2c53 100644
--- a/src/declarative/graphicsitems/qdeclarativevisualitemmodel_p.h
+++ b/src/declarative/graphicsitems/qdeclarativevisualitemmodel_p.h
@@ -79,7 +79,6 @@ public:
     virtual ReleaseFlags release(QDeclarativeItem *item) = 0;
     virtual bool completePending() const = 0;
     virtual void completeItem() = 0;
-    virtual QVariant evaluate(int index, const QString &expression, QObject *objectContext) = 0;
     virtual QString stringValue(int, const QString &) { return QString(); }
 
     virtual int indexOf(QDeclarativeItem *item, QObject *objectContext) const = 0;
@@ -122,7 +121,6 @@ public:
     virtual bool completePending() const;
     virtual void completeItem();
     virtual QString stringValue(int index, const QString &role);
-    virtual QVariant evaluate(int index, const QString &expression, QObject *objectContext);
 
     virtual int indexOf(QDeclarativeItem *item, QObject *objectContext) const;
 
@@ -177,7 +175,6 @@ public:
     bool completePending() const;
     void completeItem();
     virtual QString stringValue(int index, const QString &role);
-    QVariant evaluate(int index, const QString &expression, QObject *objectContext);
 
     int indexOf(QDeclarativeItem *item, QObject *objectContext) const;
 
diff --git a/src/declarative/qml/parser/qdeclarativejslexer.cpp b/src/declarative/qml/parser/qdeclarativejslexer.cpp
index 65a6af2..cd08658 100644
--- a/src/declarative/qml/parser/qdeclarativejslexer.cpp
+++ b/src/declarative/qml/parser/qdeclarativejslexer.cpp
@@ -120,7 +120,7 @@ Lexer::~Lexer()
 
 void Lexer::setCode(const QString &c, int lineno)
 {
-    errmsg = QString();
+    errmsg.clear();
     yylineno = lineno;
     yycolumn = 1;
     restrKeyword = false;
diff --git a/src/declarative/qml/qdeclarativecomponent.cpp b/src/declarative/qml/qdeclarativecomponent.cpp
index 15cef16..d2d1f19 100644
--- a/src/declarative/qml/qdeclarativecomponent.cpp
+++ b/src/declarative/qml/qdeclarativecomponent.cpp
@@ -54,6 +54,7 @@
 #include "private/qdeclarativeglobal_p.h"
 #include "private/qdeclarativescriptparser_p.h"
 #include "private/qdeclarativedebugtrace_p.h"
+#include "private/qdeclarativeenginedebug_p.h"
 
 #include <QStack>
 #include <QStringList>
@@ -765,8 +766,11 @@ QDeclarativeComponentPrivate::beginCreate(QDeclarativeContextData *context, cons
 
     QObject *rv = begin(ctxt, ep, cc, start, count, &state, bindings);
 
-    if (rv && !context->isInternal && ep->isDebugging)
-        context->asQDeclarativeContextPrivate()->instances.append(rv);
+    if (ep->isDebugging && rv) {
+        if  (!context->isInternal)
+            context->asQDeclarativeContextPrivate()->instances.append(rv);
+        QDeclarativeEngineDebugServer::instance()->objectCreated(engine, rv);
+    }
 
     return rv;
 }
diff --git a/src/declarative/qml/qdeclarativecompositetypemanager.cpp b/src/declarative/qml/qdeclarativecompositetypemanager.cpp
index 26b2a9b..2e77534 100644
--- a/src/declarative/qml/qdeclarativecompositetypemanager.cpp
+++ b/src/declarative/qml/qdeclarativecompositetypemanager.cpp
@@ -544,7 +544,7 @@ int QDeclarativeCompositeTypeManager::resolveTypes(QDeclarativeCompositeTypeData
     }
 
 
-    foreach (QDeclarativeScriptParser::Import imp, unit->data.imports()) {
+    foreach (const QDeclarativeScriptParser::Import &imp, unit->data.imports()) {
         QDeclarativeDirComponents qmldircomponentsnetwork;
         if (imp.type == QDeclarativeScriptParser::Import::Script)
             continue;
diff --git a/src/declarative/qml/qdeclarativeengine.cpp b/src/declarative/qml/qdeclarativeengine.cpp
index cedf9d5..c5a5c18 100644
--- a/src/declarative/qml/qdeclarativeengine.cpp
+++ b/src/declarative/qml/qdeclarativeengine.cpp
@@ -438,8 +438,6 @@ void QDeclarativeEnginePrivate::clear(SimpleList<QDeclarativeParserStatus> &pss)
     pss.clear();
 }
 
-Q_GLOBAL_STATIC(QDeclarativeEngineDebugServer, qmlEngineDebugServer);
-
 void QDeclarativePrivate::qdeclarativeelement_destructor(QObject *o)
 {
     QObjectPrivate *p = QObjectPrivate::get(o);
@@ -481,9 +479,8 @@ void QDeclarativeEnginePrivate::init()
 
     if (QCoreApplication::instance()->thread() == q->thread() &&
         QDeclarativeEngineDebugServer::isDebuggingEnabled()) {
-        qmlEngineDebugServer();
         isDebugging = true;
-        QDeclarativeEngineDebugServer::addEngine(q);
+        QDeclarativeEngineDebugServer::instance()->addEngine(q);
     }
 }
 
@@ -547,7 +544,7 @@ QDeclarativeEngine::~QDeclarativeEngine()
 {
     Q_D(QDeclarativeEngine);
     if (d->isDebugging)
-        QDeclarativeEngineDebugServer::remEngine(this);
+        QDeclarativeEngineDebugServer::instance()->remEngine(this);
 }
 
 /*! \fn void QDeclarativeEngine::quit()
@@ -2079,7 +2076,7 @@ void QDeclarativeEnginePrivate::registerCompositeType(QDeclarativeCompiledData *
     QByteArray name = data->root->className();
 
     QByteArray ptr = name + '*';
-    QByteArray lst = "QDeclarativeListProperty<" + name + ">";
+    QByteArray lst = "QDeclarativeListProperty<" + name + '>';
 
     int ptr_type = QMetaType::registerType(ptr.constData(), voidptr_destructor,
                                            voidptr_constructor);
diff --git a/src/declarative/qml/qdeclarativeenginedebug.cpp b/src/declarative/qml/qdeclarativeenginedebug.cpp
index 688e0fc..ed28185 100644
--- a/src/declarative/qml/qdeclarativeenginedebug.cpp
+++ b/src/declarative/qml/qdeclarativeenginedebug.cpp
@@ -58,7 +58,13 @@
 
 QT_BEGIN_NAMESPACE
 
-QList<QDeclarativeEngine *> QDeclarativeEngineDebugServer::m_engines;
+Q_GLOBAL_STATIC(QDeclarativeEngineDebugServer, qmlEngineDebugServer);
+
+QDeclarativeEngineDebugServer *QDeclarativeEngineDebugServer::instance()
+{
+    return qmlEngineDebugServer();
+}
+
 QDeclarativeEngineDebugServer::QDeclarativeEngineDebugServer(QObject *parent)
 : QDeclarativeDebugService(QLatin1String("QDeclarativeEngine"), parent),
     m_watch(new QDeclarativeWatcher(this))
@@ -598,4 +604,19 @@ void QDeclarativeEngineDebugServer::remEngine(QDeclarativeEngine *engine)
     m_engines.removeAll(engine);
 }
 
+void QDeclarativeEngineDebugServer::objectCreated(QDeclarativeEngine *engine, QObject *object)
+{
+    Q_ASSERT(engine);
+    Q_ASSERT(m_engines.contains(engine));
+
+    int engineId = QDeclarativeDebugService::idForObject(engine);
+    int objectId = QDeclarativeDebugService::idForObject(object);
+
+    QByteArray reply;
+    QDataStream rs(&reply, QIODevice::WriteOnly);
+
+    rs << QByteArray("OBJECT_CREATED") << engineId << objectId;
+    sendMessage(reply);
+}
+
 QT_END_NAMESPACE
diff --git a/src/declarative/qml/qdeclarativeenginedebug_p.h b/src/declarative/qml/qdeclarativeenginedebug_p.h
index aa450f3..613f1fe 100644
--- a/src/declarative/qml/qdeclarativeenginedebug_p.h
+++ b/src/declarative/qml/qdeclarativeenginedebug_p.h
@@ -92,8 +92,11 @@ public:
         bool hasNotifySignal;
     };
 
-    static void addEngine(QDeclarativeEngine *);
-    static void remEngine(QDeclarativeEngine *);
+    void addEngine(QDeclarativeEngine *);
+    void remEngine(QDeclarativeEngine *);
+    void objectCreated(QDeclarativeEngine *, QObject *);
+
+    static QDeclarativeEngineDebugServer *instance();
 
 protected:
     virtual void messageReceived(const QByteArray &);
@@ -111,7 +114,7 @@ private:
     void resetBinding(int objectId, const QString &propertyName);
     void setMethodBody(int objectId, const QString &method, const QString &body);
 
-    static QList<QDeclarativeEngine *> m_engines;
+    QList<QDeclarativeEngine *> m_engines;
     QDeclarativeWatcher *m_watch;
 };
 Q_DECLARATIVE_EXPORT QDataStream &operator<<(QDataStream &, const QDeclarativeEngineDebugServer::QDeclarativeObjectData &);
diff --git a/src/declarative/qml/qdeclarativeimport.cpp b/src/declarative/qml/qdeclarativeimport.cpp
index 8d81b34..5c21ebc 100644
--- a/src/declarative/qml/qdeclarativeimport.cpp
+++ b/src/declarative/qml/qdeclarativeimport.cpp
@@ -338,7 +338,7 @@ QString QDeclarativeImportsPrivate::resolvedUri(const QString &dir_arg, QDeclara
     qSort(paths.begin(), paths.end(), greaterThan); // Ensure subdirs preceed their parents.
 
     QString stableRelativePath = dir;
-    foreach( QString path, paths) {
+    foreach(const QString &path, paths) {
         if (dir.startsWith(path)) {
             stableRelativePath = dir.mid(path.length()+1);
             break;
diff --git a/src/declarative/qml/qdeclarativescriptparser.cpp b/src/declarative/qml/qdeclarativescriptparser.cpp
index 0657f49..0b3b35f 100644
--- a/src/declarative/qml/qdeclarativescriptparser.cpp
+++ b/src/declarative/qml/qdeclarativescriptparser.cpp
@@ -543,7 +543,7 @@ bool ProcessAST::visit(AST::UiPublicMember *node)
             QString typemodifier;
             if(node->typeModifier)
                 typemodifier = node->typeModifier->asString();
-            if (typemodifier == QString()) {
+            if (typemodifier.isEmpty()) {
                 type = Object::DynamicProperty::Custom;
             } else if(typemodifier == QLatin1String("list")) {
                 type = Object::DynamicProperty::CustomList;
diff --git a/src/declarative/qml/qmetaobjectbuilder.cpp b/src/declarative/qml/qmetaobjectbuilder.cpp
index 6e4d7b8..0954248 100644
--- a/src/declarative/qml/qmetaobjectbuilder.cpp
+++ b/src/declarative/qml/qmetaobjectbuilder.cpp
@@ -1142,7 +1142,7 @@ static QByteArray buildParameterNames
     if (!parameterNames.isEmpty()) {
         QByteArray names;
         bool first = true;
-        foreach (QByteArray name, parameterNames) {
+        foreach (const QByteArray &name, parameterNames) {
             if (first)
                 first = false;
             else
diff --git a/src/declarative/util/qdeclarativelistmodel.cpp b/src/declarative/util/qdeclarativelistmodel.cpp
index 1f66f0f..0162beb 100644
--- a/src/declarative/util/qdeclarativelistmodel.cpp
+++ b/src/declarative/util/qdeclarativelistmodel.cpp
@@ -570,7 +570,7 @@ bool QDeclarativeListModelParser::compileProperty(const QDeclarativeCustomParser
             QList<QDeclarativeCustomParserProperty> props = node.properties();
             for(int jj = 0; jj < props.count(); ++jj) {
                 const QDeclarativeCustomParserProperty &nodeProp = props.at(jj);
-                if (nodeProp.name() == "") {
+                if (nodeProp.name().isEmpty()) {
                     error(nodeProp, QDeclarativeListModel::tr("ListElement: cannot contain nested elements"));
                     return false;
                 }
@@ -658,7 +658,7 @@ QByteArray QDeclarativeListModelParser::compile(const QList<QDeclarativeCustomPa
 
     for(int ii = 0; ii < customProps.count(); ++ii) {
         const QDeclarativeCustomParserProperty &prop = customProps.at(ii);
-        if(prop.name() != "") { // isn't default property
+        if(!prop.name().isEmpty()) { // isn't default property
             error(prop, QDeclarativeListModel::tr("ListModel: undefined property '%1'").arg(QString::fromUtf8(prop.name())));
             return QByteArray();
         }
diff --git a/src/declarative/util/qdeclarativelistmodelworkeragent.cpp b/src/declarative/util/qdeclarativelistmodelworkeragent.cpp
index 534c923..498de6d 100644
--- a/src/declarative/util/qdeclarativelistmodelworkeragent.cpp
+++ b/src/declarative/util/qdeclarativelistmodelworkeragent.cpp
@@ -187,12 +187,17 @@ void QDeclarativeListModelWorkerAgent::sync()
     s->data = data;
     s->list = m_copy;
     data.changes.clear();
+
+    mutex.lock();
     QCoreApplication::postEvent(this, s);
+    syncDone.wait(&mutex);
+    mutex.unlock();
 }
 
 bool QDeclarativeListModelWorkerAgent::event(QEvent *e)
 {
     if (e->type() == QEvent::User) {
+        QMutexLocker locker(&mutex);
         Sync *s = static_cast<Sync *>(e);
 
         const QList<Change> &changes = s->data.changes;
@@ -202,13 +207,18 @@ bool QDeclarativeListModelWorkerAgent::event(QEvent *e)
 
             FlatListModel *orig = m_orig->m_flat;
             FlatListModel *copy = s->list->m_flat;
-            if (!orig || !copy) 
+            if (!orig || !copy) {
+                syncDone.wakeAll();
                 return QObject::event(e);
-            
+            }
+
             orig->m_roles = copy->m_roles;
             orig->m_strings = copy->m_strings;
             orig->m_values = copy->m_values;
 
+            syncDone.wakeAll();
+            locker.unlock();
+
             for (int ii = 0; ii < changes.count(); ++ii) {
                 const Change &change = changes.at(ii);
                 switch (change.type) {
@@ -229,6 +239,8 @@ bool QDeclarativeListModelWorkerAgent::event(QEvent *e)
 
             if (cc)
                 emit m_orig->countChanged();
+        } else {
+            syncDone.wakeAll();
         }
     }
 
diff --git a/src/declarative/util/qdeclarativelistmodelworkeragent_p.h b/src/declarative/util/qdeclarativelistmodelworkeragent_p.h
index 1622144..01da374 100644
--- a/src/declarative/util/qdeclarativelistmodelworkeragent_p.h
+++ b/src/declarative/util/qdeclarativelistmodelworkeragent_p.h
@@ -57,6 +57,8 @@
 
 #include <QtScript/qscriptvalue.h>
 #include <QtGui/qevent.h>
+#include <QMutex>
+#include <QWaitCondition>
 
 QT_BEGIN_HEADER
 
@@ -142,6 +144,8 @@ private:
     QAtomicInt m_ref;
     QDeclarativeListModel *m_orig;
     QDeclarativeListModel *m_copy;
+    QMutex mutex;
+    QWaitCondition syncDone;
 };
 
 QT_END_NAMESPACE
diff --git a/src/declarative/util/qdeclarativestategroup.cpp b/src/declarative/util/qdeclarativestategroup.cpp
index fc90baa..6d9563e 100644
--- a/src/declarative/util/qdeclarativestategroup.cpp
+++ b/src/declarative/util/qdeclarativestategroup.cpp
@@ -272,7 +272,7 @@ void QDeclarativeStateGroup::componentComplete()
         return;
     } else if (!d->currentState.isEmpty()) {
         QString cs = d->currentState;
-        d->currentState = QString();
+        d->currentState.clear();
         d->setCurrentStateInternal(cs, true);
     }
 }
@@ -314,7 +314,7 @@ bool QDeclarativeStateGroupPrivate::updateAutoState()
         }
     }
     if (revert) {
-        bool rv = currentState != QString();
+        bool rv = !currentState.isEmpty();
         q->setState(QString());
         return rv;
     } else {
diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp
index a02f3ac..4c03d33 100644
--- a/src/gui/graphicsview/qgraphicsscene.cpp
+++ b/src/gui/graphicsview/qgraphicsscene.cpp
@@ -5126,7 +5126,9 @@ void QGraphicsScenePrivate::processDirtyItemsRecursive(QGraphicsItem *item, bool
                 q->update(itemBoundingRect.translated(item->d_ptr->sceneTransform.dx(),
                                                       item->d_ptr->sceneTransform.dy()));
             } else {
-                q->update(item->d_ptr->sceneTransform.mapRect(itemBoundingRect));
+                QRectF rect = item->d_ptr->sceneTransform.mapRect(itemBoundingRect);
+                if (!rect.isEmpty())
+                    q->update(rect);
             }
         } else {
             QRectF dirtyRect;
diff --git a/src/gui/gui.pro b/src/gui/gui.pro
index 3943e26..13d2c77 100644
--- a/src/gui/gui.pro
+++ b/src/gui/gui.pro
@@ -99,7 +99,7 @@ neon:*-g++* {
 contains(QMAKE_MAC_XARCH, no) {
     DEFINES += QT_NO_MAC_XARCH
 } else {
-    win32-g++*|!win32:!*-icc* {
+    win32-g++*|!win32:!win32-icc*:!macx-icc* {
         mmx {
             mmx_compiler.commands = $$QMAKE_CXX -c -Winline
 
diff --git a/src/gui/kernel/qgesturemanager.cpp b/src/gui/kernel/qgesturemanager.cpp
index e768a21..cb4061e 100644
--- a/src/gui/kernel/qgesturemanager.cpp
+++ b/src/gui/kernel/qgesturemanager.cpp
@@ -595,8 +595,9 @@ void QGestureManager::deliverEvents(const QSet<QGesture *> &gestures,
             if (gesture->hasHotSpot()) {
                 // guess the target widget using the hotspot of the gesture
                 QPoint pt = gesture->hotSpot().toPoint();
-                if (QWidget *w = qApp->topLevelAt(pt)) {
-                    target = w->childAt(w->mapFromGlobal(pt));
+                if (QWidget *topLevel = qApp->topLevelAt(pt)) {
+                    QWidget *child = topLevel->childAt(topLevel->mapFromGlobal(pt));
+                    target = child ? child : topLevel;
                 }
             } else {
                 // or use the context of the gesture
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp
index b694d9c..be90006 100644
--- a/src/gui/painting/qpainter.cpp
+++ b/src/gui/painting/qpainter.cpp
@@ -5862,10 +5862,13 @@ void QPainter::drawStaticText(const QPointF &topLeftPosition, const QStaticText
         return;
     }
 
-    if (d->extended->type() == QPaintEngine::OpenGL2 && !staticText_d->untransformedCoordinates) {
+    bool paintEngineSupportsTransformations = d->extended->type() == QPaintEngine::OpenGL2
+                                           || d->extended->type() == QPaintEngine::OpenVG;
+
+    if (paintEngineSupportsTransformations && !staticText_d->untransformedCoordinates) {
         staticText_d->untransformedCoordinates = true;
         staticText_d->needsRelayout = true;
-    } else if (d->extended->type() != QPaintEngine::OpenGL2 && staticText_d->untransformedCoordinates) {
+    } else if (!paintEngineSupportsTransformations && staticText_d->untransformedCoordinates) {
         staticText_d->untransformedCoordinates = false;
         staticText_d->needsRelayout = true;
     }
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp
index 5670e29..8d6dd6c 100644
--- a/src/gui/text/qtextengine.cpp
+++ b/src/gui/text/qtextengine.cpp
@@ -1561,14 +1561,19 @@ bool QTextEngine::isRightToLeft() const
 int QTextEngine::findItem(int strPos) const
 {
     itemize();
-
-    // ##### use binary search
-    int item;
-    for (item = layoutData->items.size()-1; item > 0; --item) {
-        if (layoutData->items[item].position <= strPos)
-            break;
+    int left = 0;
+    int right = layoutData->items.size()-1;
+    while(left <= right) {
+        int middle = ((right-left)/2)+left;
+        if (strPos > layoutData->items[middle].position)
+            left = middle+1;
+        else if(strPos < layoutData->items[middle].position)
+            right = middle-1;
+        else {
+            return middle;
+        }
     }
-    return item;
+    return right;
 }
 
 QFixed QTextEngine::width(int from, int len) const
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index 7d5fa43..f432b7e 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1217,7 +1217,7 @@ void QTextLayout::draw(QPainter *p, const QPointF &pos, const QVector<FormatRang
 
         bool hasText = (selection.format.foreground().style() != Qt::NoBrush);
         bool hasBackground= (selection.format.background().style() != Qt::NoBrush);
-        
+
         if (hasBackground) {
             selection.format.setProperty(ObjectSelectionBrush, selection.format.property(QTextFormat::BackgroundBrush));
             // don't just clear the property, set an empty brush that overrides a potential
@@ -1731,7 +1731,7 @@ namespace {
     };
 
 inline bool LineBreakHelper::checkFullOtherwiseExtend(QScriptLine &line)
-{        
+{
     LB_DEBUG("possible break width %f, spacew=%f", tmpData.textWidth.toReal(), spaceData.textWidth.toReal());
 
     QFixed newWidth = calculateNewWidth(line);
@@ -1797,13 +1797,23 @@ void QTextLine::layout_helper(int maxGlyphs)
     bool breakany = (wrapMode == QTextOption::WrapAnywhere);
     lbh.manualWrap = (wrapMode == QTextOption::ManualWrap || wrapMode == QTextOption::NoWrap);
 
-    // #### binary search!
     int item = -1;
-    int newItem;
-    for (newItem = eng->layoutData->items.size()-1; newItem > 0; --newItem) {
-        if (eng->layoutData->items[newItem].position <= line.from)
+    int newItem = -1;
+    int left = 0;
+    int right = eng->layoutData->items.size()-1;
+    while(left <= right) {
+        int middle = ((right-left)/2)+left;
+        if (line.from > eng->layoutData->items[middle].position)
+            left = middle+1;
+        else if(line.from < eng->layoutData->items[middle].position)
+            right = middle-1;
+        else {
+            newItem = middle;
             break;
+        }
     }
+    if (newItem == -1)
+        newItem = right;
 
     LB_DEBUG("from: %d: item=%d, total %d, width available %f", line.from, newItem, eng->layoutData->items.size(), line.width.toReal());
 
@@ -1975,7 +1985,7 @@ void QTextLine::layout_helper(int maxGlyphs)
     }
     LB_DEBUG("reached end of line");
     lbh.checkFullOtherwiseExtend(line);
-found:       
+found:
     if (lbh.rightBearing > 0 && !lbh.whiteSpaceOrObject) // If right bearing has not yet been adjusted
         lbh.adjustRightBearing();
     line.textAdvance = line.textWidth;
diff --git a/src/network/bearer/qnetworkconfigmanager.cpp b/src/network/bearer/qnetworkconfigmanager.cpp
index 102b347..65014a6 100644
--- a/src/network/bearer/qnetworkconfigmanager.cpp
+++ b/src/network/bearer/qnetworkconfigmanager.cpp
@@ -54,7 +54,15 @@ Q_GLOBAL_STATIC(QNetworkConfigurationManagerPrivate, connManager);
 
 QNetworkConfigurationManagerPrivate *qNetworkConfigurationManagerPrivate()
 {
-    return connManager();
+    static bool initialized = false;
+
+    QNetworkConfigurationManagerPrivate *m = connManager();
+    if (!initialized) {
+        initialized = true;
+        m->updateConfigurations();
+    }
+
+    return m;
 }
 
 /*!
@@ -178,7 +186,7 @@ QNetworkConfigurationManagerPrivate *qNetworkConfigurationManagerPrivate()
 QNetworkConfigurationManager::QNetworkConfigurationManager( QObject* parent )
     : QObject(parent)
 {
-    QNetworkConfigurationManagerPrivate *priv = connManager();
+    QNetworkConfigurationManagerPrivate *priv = qNetworkConfigurationManagerPrivate();
 
     connect(priv, SIGNAL(configurationAdded(QNetworkConfiguration)),
             this, SIGNAL(configurationAdded(QNetworkConfiguration)));
diff --git a/src/network/bearer/qnetworkconfigmanager_p.cpp b/src/network/bearer/qnetworkconfigmanager_p.cpp
index dd174bf..d388920 100644
--- a/src/network/bearer/qnetworkconfigmanager_p.cpp
+++ b/src/network/bearer/qnetworkconfigmanager_p.cpp
@@ -64,9 +64,6 @@ QNetworkConfigurationManagerPrivate::QNetworkConfigurationManagerPrivate()
 {
     qRegisterMetaType<QNetworkConfiguration>("QNetworkConfiguration");
     qRegisterMetaType<QNetworkConfigurationPrivatePointer>("QNetworkConfigurationPrivatePointer");
-
-    moveToThread(QCoreApplicationPrivate::mainThread());
-    updateConfigurations();
 }
 
 QNetworkConfigurationManagerPrivate::~QNetworkConfigurationManagerPrivate()
@@ -359,6 +356,13 @@ void QNetworkConfigurationManagerPrivate::updateConfigurations()
         if (sender())
             return;
 
+        if (thread() != QCoreApplicationPrivate::mainThread()) {
+            if (thread() != QThread::currentThread())
+                return;
+
+            moveToThread(QCoreApplicationPrivate::mainThread());
+        }
+
         updating = false;
 
 #ifndef QT_NO_LIBRARY
diff --git a/src/network/kernel/qhostinfo_unix.cpp b/src/network/kernel/qhostinfo_unix.cpp
index 3112dd6..9e3da61 100644
--- a/src/network/kernel/qhostinfo_unix.cpp
+++ b/src/network/kernel/qhostinfo_unix.cpp
@@ -247,7 +247,10 @@ QHostInfo QHostInfoAgent::fromName(const QString &hostName)
 #ifndef QT_NO_IPV6
             else if (node->ai_family == AF_INET6) {
                 QHostAddress addr;
-                addr.setAddress(((sockaddr_in6 *) node->ai_addr)->sin6_addr.s6_addr);
+                sockaddr_in6 *sa6 = (sockaddr_in6 *) node->ai_addr;
+                addr.setAddress(sa6->sin6_addr.s6_addr);
+                if (sa6->sin6_scope_id)
+                    addr.setScopeId(QString::number(sa6->sin6_scope_id));
                 if (!addresses.contains(addr))
                     addresses.append(addr);
             }
diff --git a/src/network/socket/qnativesocketengine_unix.cpp b/src/network/socket/qnativesocketengine_unix.cpp
index fe28863..f6bfbac 100644
--- a/src/network/socket/qnativesocketengine_unix.cpp
+++ b/src/network/socket/qnativesocketengine_unix.cpp
@@ -352,10 +352,13 @@ bool QNativeSocketEnginePrivate::nativeConnect(const QHostAddress &addr, quint16
         memset(&sockAddrIPv6, 0, sizeof(sockAddrIPv6));
         sockAddrIPv6.sin6_family = AF_INET6;
         sockAddrIPv6.sin6_port = htons(port);
+
+        QString scopeid = addr.scopeId();
+        bool ok;
+        sockAddrIPv6.sin6_scope_id = scopeid.toInt(&ok);
 #ifndef QT_NO_IPV6IFNAME
-        sockAddrIPv6.sin6_scope_id = ::if_nametoindex(addr.scopeId().toLatin1().data());
-#else
-        sockAddrIPv6.sin6_scope_id = addr.scopeId().toInt();
+        if (!ok)
+            sockAddrIPv6.sin6_scope_id = ::if_nametoindex(scopeid.toLatin1());
 #endif
         Q_IPV6ADDR ip6 = addr.toIPv6Address();
         memcpy(&sockAddrIPv6.sin6_addr.s6_addr, &ip6, sizeof(ip6));
diff --git a/src/network/socket/qnativesocketengine_win.cpp b/src/network/socket/qnativesocketengine_win.cpp
index 8177b4f..477ef45 100644
--- a/src/network/socket/qnativesocketengine_win.cpp
+++ b/src/network/socket/qnativesocketengine_win.cpp
@@ -207,6 +207,7 @@ static inline void qt_socket_setPortAndAddress(SOCKET socketDescriptor, sockaddr
     if (address.protocol() == QAbstractSocket::IPv6Protocol) {
         memset(sockAddrIPv6, 0, sizeof(qt_sockaddr_in6));
         sockAddrIPv6->sin6_family = AF_INET6;
+        sockAddrIPv6->sin6_scope_id = address.scopeId().toInt();
         WSAHtons(socketDescriptor, port, &(sockAddrIPv6->sin6_port));
         Q_IPV6ADDR tmp = address.toIPv6Address();
         memcpy(&(sockAddrIPv6->sin6_addr.qt_s6_addr), &tmp, sizeof(tmp));
diff --git a/src/testlib/qbenchmarkmeasurement_p.h b/src/testlib/qbenchmarkmeasurement_p.h
index 932852c..20a3bc1 100644
--- a/src/testlib/qbenchmarkmeasurement_p.h
+++ b/src/testlib/qbenchmarkmeasurement_p.h
@@ -53,7 +53,7 @@
 // We mean it.
 //
 
-#include <QtCore/qdatetime.h>
+#include <QtCore/qelapsedtimer.h>
 #include "3rdparty/cycle_p.h"
 #include "qbenchmark.h"
 
@@ -87,7 +87,7 @@ public:
     bool needsWarmupIteration();
     QTest::QBenchmarkMetric metricType();
 private:
-    QTime time;
+    QElapsedTimer time;
 };
 
 #ifdef HAVE_TICK_COUNTER // defined in 3rdparty/cycle_p.h