Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.6-integration

* '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2:
  Make tablet detection work with new wacom drivers
  Fixed an exit crash that could occur in the GL 2 engine under X11.
  Fix tst_QVariant::operator_eq_eq(UserType)
  SqlBrowser not respecting casings.
  Remove vgClearPath() change to OpenVG paint engine
  QVariant: Fix crash when comparing two variant with the same undefined type.
  Fix compositing when QWS background is completely transparent.
  Fixes wrong composition mode for cached backgrounds in Graphics View.
  Support keypad input with vnc driver

1 files changed, 10 insertions, 0 deletions

diff --git a/src/gui/image/qimagepixmapcleanuphooks.cpp b/src/gui/image/qimagepixmapcleanuphooks.cpp
index 517fcb0..521e348 100644
--- a/src/gui/image/qimagepixmapcleanuphooks.cpp
+++ b/src/gui/image/qimagepixmapcleanuphooks.cpp
@@ -96,6 +96,11 @@ void QImagePixmapCleanupHooks::removeImageHook(_qt_image_cleanup_hook_64 hook)
 void QImagePixmapCleanupHooks::executePixmapDataModificationHooks(QPixmapData* pmd)
 {
     QImagePixmapCleanupHooks *h = qt_image_and_pixmap_cleanup_hooks();
+    // the global destructor for the pixmap and image hooks might have
+    // been called already if the app is "leaking" global
+    // pixmaps/images
+    if (!h)
+        return;
     for (int i = 0; i < h->pixmapModificationHooks.count(); ++i)
         h->pixmapModificationHooks[i](pmd);
 
@@ -106,6 +111,11 @@ void QImagePixmapCleanupHooks::executePixmapDataModificationHooks(QPixmapData* p
 void QImagePixmapCleanupHooks::executePixmapDataDestructionHooks(QPixmapData* pmd)
 {
     QImagePixmapCleanupHooks *h = qt_image_and_pixmap_cleanup_hooks();
+    // the global destructor for the pixmap and image hooks might have
+    // been called already if the app is "leaking" global
+    // pixmaps/images
+    if (!h)
+        return;
     for (int i = 0; i < h->pixmapDestructionHooks.count(); ++i)
         h->pixmapDestructionHooks[i](pmd);