Merge branch '4.6'

Conflicts:
	src/corelib/global/qglobal.h
	src/gui/dialogs/qfiledialog_win.cpp
	src/plugins/qpluginbase.pri
	src/qbase.pri
	tests/auto/selftests/expected_cmptest.txt
	tests/auto/selftests/expected_crashes_3.txt
	tests/auto/selftests/expected_longstring.txt
	tests/auto/selftests/expected_maxwarnings.txt
	tests/auto/selftests/expected_skip.txt
	tools/assistant/tools/assistant/doc/assistant.qdocconf
	tools/qdoc3/test/assistant.qdocconf
	tools/qdoc3/test/designer.qdocconf
	tools/qdoc3/test/linguist.qdocconf
	tools/qdoc3/test/qmake.qdocconf
	tools/qdoc3/test/qt-build-docs.qdocconf
	tools/qdoc3/test/qt.qdocconf

3 files changed, 10 insertions, 25 deletions

diff --git a/src/gui/image/qimagepixmapcleanuphooks.cpp b/src/gui/image/qimagepixmapcleanuphooks.cpp
index 35322e9..650075b 100644
--- a/src/gui/image/qimagepixmapcleanuphooks.cpp
+++ b/src/gui/image/qimagepixmapcleanuphooks.cpp
@@ -55,20 +55,11 @@ Q_GUI_EXPORT _qt_pixmap_cleanup_hook_64 qt_pixmap_cleanup_hook_64 = 0;
 Q_GUI_EXPORT _qt_image_cleanup_hook qt_image_cleanup_hook = 0;
 Q_GUI_EXPORT _qt_image_cleanup_hook_64 qt_image_cleanup_hook_64 = 0;
 
-
-QImagePixmapCleanupHooks* qt_image_and_pixmap_cleanup_hooks = 0;
-
-
-QImagePixmapCleanupHooks::QImagePixmapCleanupHooks()
-{
-    qt_image_and_pixmap_cleanup_hooks = this;
-}
+Q_GLOBAL_STATIC(QImagePixmapCleanupHooks, qt_image_and_pixmap_cleanup_hooks)
 
 QImagePixmapCleanupHooks *QImagePixmapCleanupHooks::instance()
 {
-    if (!qt_image_and_pixmap_cleanup_hooks)
-        qt_image_and_pixmap_cleanup_hooks = new QImagePixmapCleanupHooks;
-    return qt_image_and_pixmap_cleanup_hooks;
+    return qt_image_and_pixmap_cleanup_hooks();
 }
 
 void QImagePixmapCleanupHooks::addPixmapModificationHook(_qt_pixmap_cleanup_hook_pm hook)
@@ -105,9 +96,8 @@ void QImagePixmapCleanupHooks::removeImageHook(_qt_image_cleanup_hook_64 hook)
 
 void QImagePixmapCleanupHooks::executePixmapModificationHooks(QPixmap* pm)
 {
-    Q_ASSERT(qt_image_and_pixmap_cleanup_hooks);
-    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks->pixmapModificationHooks.count(); ++i)
-        qt_image_and_pixmap_cleanup_hooks->pixmapModificationHooks[i](pm);
+    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks()->pixmapModificationHooks.count(); ++i)
+        qt_image_and_pixmap_cleanup_hooks()->pixmapModificationHooks[i](pm);
 
     if (qt_pixmap_cleanup_hook_64)
         qt_pixmap_cleanup_hook_64(pm->cacheKey());
@@ -115,9 +105,8 @@ void QImagePixmapCleanupHooks::executePixmapModificationHooks(QPixmap* pm)
 
 void QImagePixmapCleanupHooks::executePixmapDestructionHooks(QPixmap* pm)
 {
-    Q_ASSERT(qt_image_and_pixmap_cleanup_hooks);
-    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks->pixmapDestructionHooks.count(); ++i)
-        qt_image_and_pixmap_cleanup_hooks->pixmapDestructionHooks[i](pm);
+    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks()->pixmapDestructionHooks.count(); ++i)
+        qt_image_and_pixmap_cleanup_hooks()->pixmapDestructionHooks[i](pm);
 
     if (qt_pixmap_cleanup_hook_64)
         qt_pixmap_cleanup_hook_64(pm->cacheKey());
@@ -125,9 +114,8 @@ void QImagePixmapCleanupHooks::executePixmapDestructionHooks(QPixmap* pm)
 
 void QImagePixmapCleanupHooks::executeImageHooks(qint64 key)
 {
-    Q_ASSERT(qt_image_and_pixmap_cleanup_hooks);
-    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks->imageHooks.count(); ++i)
-        qt_image_and_pixmap_cleanup_hooks->imageHooks[i](key);
+    for (int i = 0; i < qt_image_and_pixmap_cleanup_hooks()->imageHooks.count(); ++i)
+        qt_image_and_pixmap_cleanup_hooks()->imageHooks[i](key);
 
     if (qt_image_cleanup_hook_64)
         qt_image_cleanup_hook_64(key);
diff --git a/src/gui/image/qimagepixmapcleanuphooks_p.h b/src/gui/image/qimagepixmapcleanuphooks_p.h
index 9e490d7..dfc5f28 100644
--- a/src/gui/image/qimagepixmapcleanuphooks_p.h
+++ b/src/gui/image/qimagepixmapcleanuphooks_p.h
@@ -61,13 +61,10 @@ typedef void (*_qt_image_cleanup_hook_64)(qint64);
 typedef void (*_qt_pixmap_cleanup_hook_pm)(QPixmap*);
 
 class QImagePixmapCleanupHooks;
-extern QImagePixmapCleanupHooks* qt_image_and_pixmap_cleanup_hooks;
 
 class Q_GUI_EXPORT QImagePixmapCleanupHooks
 {
 public:
-    QImagePixmapCleanupHooks();
-
     static QImagePixmapCleanupHooks *instance();
 
     static void enableCleanupHooks(const QImage &image);
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp
index b085c09..406dc0b 100644
--- a/src/gui/image/qpixmap.cpp
+++ b/src/gui/image/qpixmap.cpp
@@ -1168,7 +1168,7 @@ QPixmap QPixmap::grabWidget(QWidget * widget, const QRect &rect)
 Qt::HANDLE QPixmap::handle() const
 {
 #if defined(Q_WS_X11)
-    if (data->classId() == QPixmapData::X11Class)
+    if (data && data->classId() == QPixmapData::X11Class)
         return static_cast<const QX11PixmapData*>(data.constData())->handle();
 #endif
     return 0;
@@ -1219,7 +1219,7 @@ QPixmap::QPixmap(const QImage& image)
     if (!qt_pixmap_thread_test())
         return;
 
-    if (data->pixelType() == QPixmapData::BitmapType)
+    if (data && data->pixelType() == QPixmapData::BitmapType)
         *this = QBitmap::fromImage(image);
     else
         *this = fromImage(image);