5 files changed, 22 insertions, 23 deletions

diff --git a/src/corelib/global/qnamespace.qdoc b/src/corelib/global/qnamespace.qdoc
index 314dfb2..fafbec5 100644
--- a/src/corelib/global/qnamespace.qdoc
+++ b/src/corelib/global/qnamespace.qdoc
@@ -2804,6 +2804,6 @@
 
     \note: in 4.6, cursor navigation is only implemented for Symbian OS.
            On other platforms, it behaves as NavigationModeNone.
-    \sa QApplication::setNavigationMode
-    \sa QApplication::navigationMode
+    \sa QApplication::setNavigationMode()
+    \sa QApplication::navigationMode()
 */
diff --git a/src/corelib/io/qfile.cpp b/src/corelib/io/qfile.cpp
index c52a665..134c4b8 100644
--- a/src/corelib/io/qfile.cpp
+++ b/src/corelib/io/qfile.cpp
@@ -1370,7 +1370,7 @@ QFile::flush()
 }
 
 /*!
-  Flushes the file and then closes it.
+  Calls QFile::flush() and closes the file. Errors from flush are ignored.
 
   \sa QIODevice::close()
 */
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp
index b4e3959..a8120cf 100644
--- a/src/corelib/kernel/qobject.cpp
+++ b/src/corelib/kernel/qobject.cpp
@@ -129,7 +129,7 @@ QObjectData::~QObjectData() {}
 QDeclarativeData::~QDeclarativeData() {}
 
 QObjectPrivate::QObjectPrivate(int version)
-    : threadData(0), connectionLists(0), senders(0), currentSender(0), currentChildBeingDeleted(0), declarativeData(0), objectGuards(0)
+    : threadData(0), connectionLists(0), senders(0), currentSender(0), currentChildBeingDeleted(0)
 {
     if (version != QObjectPrivateVersion)
         qFatal("Cannot mix incompatible Qt libraries");
@@ -496,18 +496,14 @@ void QMetaObject::changeGuard(QObject **ptr, QObject *o)
 void QObjectPrivate::clearGuards(QObject *object)
 {
     QObjectPrivate *priv = QObjectPrivate::get(object);
-    QGuard<QObject> *guard = priv->objectGuards;
+    QGuard<QObject> *guard = priv->extraData ? priv->extraData->objectGuards : 0;
     while (guard) {
-        guard->o = 0;
+        QGuard<QObject> *g = guard;
         guard = guard->next;
-    }
-    while (priv->objectGuards) {
-        guard = priv->objectGuards;
-        guard->prev = 0;
-        if (guard->next) guard->next->prev = &priv->objectGuards;
-        priv->objectGuards = guard->next;
-        guard->next = 0;
-        guard->objectDestroyed(object);
+        g->o = 0;
+        g->prev = 0;
+        g->next = 0;
+        g->objectDestroyed(object);
     }
 
     if (!priv->hasGuards)
diff --git a/src/corelib/kernel/qobject_p.h b/src/corelib/kernel/qobject_p.h
index e7d824b..f087407 100644
--- a/src/corelib/kernel/qobject_p.h
+++ b/src/corelib/kernel/qobject_p.h
@@ -99,11 +99,13 @@ class Q_CORE_EXPORT QObjectPrivate : public QObjectData
 public:
     struct ExtraData
     {
+        ExtraData() : objectGuards(0) {}
 #ifndef QT_NO_USERDATA
         QVector<QObjectUserData *> userData;
 #endif
         QList<QByteArray> propertyNames;
         QList<QVariant> propertyValues;
+        QGuard<QObject> *objectGuards; //linked list handle of QGuards
     };
 
     struct Connection
@@ -192,12 +194,13 @@ public:
 #endif
 
     QList<QPointer<QObject> > eventFilters;
-    QObject *currentChildBeingDeleted;
+    union {
+        QObject *currentChildBeingDeleted;
+        QDeclarativeData *declarativeData; //extra data used by the DeclarativeUI project.
+    };
 
     // these objects are all used to indicate that a QObject was deleted
     // plus QPointer, which keeps a separate list
-    QDeclarativeData *declarativeData;
-    QGuard<QObject> *objectGuards;
     QAtomicPointer<QtSharedPointer::ExternalRefCountData> sharedRefcount;
     int *deleteWatch;
 };
@@ -211,9 +214,12 @@ inline void q_guard_addGuard(QGuard<QObject> *g)
         return;
     }
 
-    g->next = p->objectGuards;
-    p->objectGuards = g;
-    g->prev = &p->objectGuards;
+    if (!p->extraData)
+        p->extraData = new QObjectPrivate::ExtraData;
+
+    g->next = p->extraData->objectGuards;
+    p->extraData->objectGuards = g;
+    g->prev = &p->extraData->objectGuards;
     if (g->next)
         g->next->prev = &g->next;
 }
diff --git a/src/corelib/tools/qmargins.cpp b/src/corelib/tools/qmargins.cpp
index 72fbd61..b5e5ebd 100644
--- a/src/corelib/tools/qmargins.cpp
+++ b/src/corelib/tools/qmargins.cpp
@@ -58,9 +58,6 @@ QT_BEGIN_NAMESPACE
     The isNull() function returns true only if all margins are set to zero.
 
     QMargin objects can be streamed as well as compared.
-
-    \sa qDrawBorderPixmap()
-
 */