2 files changed, 10 insertions, 1 deletions
diff --git a/src/corelib/kernel/qobject.cpp b/src/corelib/kernel/qobject.cpp
index 761b31f..8e4ec7c 100644
--- a/src/corelib/kernel/qobject.cpp
+++ b/src/corelib/kernel/qobject.cpp
@@ -132,7 +132,8 @@ QObjectPrivate::QObjectPrivate(int version)
     : threadData(0), connectionLists(0), senders(0), currentSender(0), currentChildBeingDeleted(0)
 {
     if (version != QObjectPrivateVersion)
-        qFatal("Cannot mix incompatible Qt libraries");
+        qFatal("Cannot mix incompatible Qt library (version 0x%x) with this library (version 0x%x)",
+                version, QObjectPrivateVersion);
 
     // QObjectData initialization
     q_ptr = 0;
diff --git a/src/corelib/kernel/qobjectdefs.h b/src/corelib/kernel/qobjectdefs.h
index 8ed7f3f..b045c42 100644
--- a/src/corelib/kernel/qobjectdefs.h
+++ b/src/corelib/kernel/qobjectdefs.h
@@ -271,6 +271,14 @@ public:
         : QGenericArgument(aName, static_cast<const void *>(&aData))
         {}
 };
+template <class T>
+class QArgument<T &>: public QGenericArgument
+{
+public:
+    inline QArgument(const char *aName, T &aData)
+        : QGenericArgument(aName, static_cast<const void *>(&aData))
+        {}
+};
 
 
 template <typename T>