2 files changed, 39 insertions, 1 deletions
diff --git a/src/corelib/tools/qsharedpointer.cpp b/src/corelib/tools/qsharedpointer.cpp
index 8ca153f433..73a1e6c607 100644
--- a/src/corelib/tools/qsharedpointer.cpp
+++ b/src/corelib/tools/qsharedpointer.cpp
@@ -1214,6 +1214,26 @@ QtSharedPointer::ExternalRefCountData *QtSharedPointer::ExternalRefCountData::ge
     return x;
 }
 
+/**
+    \internal
+    Returns a QSharedPointer<QObject> if the variant contains
+    a QSharedPointer<T> where T inherits QObject. Otherwise the behaviour is undefined.
+*/
+QSharedPointer<QObject> QtSharedPointer::sharedPointerFromVariant_internal(const QVariant &variant)
+{
+    return *reinterpret_cast<const QSharedPointer<QObject>*>(variant.constData());
+}
+
+/**
+    \internal
+    Returns a QWeakPointer<QObject> if the variant contains
+    a QWeakPointer<T> where T inherits QObject. Otherwise the behaviour is undefined.
+*/
+QWeakPointer<QObject> QtSharedPointer::weakPointerFromVariant_internal(const QVariant &variant)
+{
+    return *reinterpret_cast<const QWeakPointer<QObject>*>(variant.constData());
+}
+
 QT_END_NAMESPACE
 
 #endif
diff --git a/src/corelib/tools/qsharedpointer_impl.h b/src/corelib/tools/qsharedpointer_impl.h
index 46cd1cc0a7..9d9698b8ca 100644
--- a/src/corelib/tools/qsharedpointer_impl.h
+++ b/src/corelib/tools/qsharedpointer_impl.h
@@ -87,6 +87,8 @@ template<typename T> inline void qt_sharedpointer_cast_check(T *) { }
 template <class T> class QWeakPointer;
 template <class T> class QSharedPointer;
 
+class QVariant;
+
 template <class X, class T>
 QSharedPointer<X> qSharedPointerCast(const QSharedPointer<T> &ptr);
 template <class X, class T>
@@ -258,6 +260,9 @@ namespace QtSharedPointer {
         ~ExternalRefCountWithContiguousData() Q_DECL_EQ_DELETE;
         Q_DISABLE_COPY(ExternalRefCountWithContiguousData)
     };
+
+    Q_CORE_EXPORT QWeakPointer<QObject> weakPointerFromVariant_internal(const QVariant &variant);
+    Q_CORE_EXPORT QSharedPointer<QObject> sharedPointerFromVariant_internal(const QVariant &variant);
 } // namespace QtSharedPointer
 
 template <class T> class QSharedPointer
@@ -816,8 +821,21 @@ qobject_cast(const QWeakPointer<T> &src)
 {
     return qSharedPointerObjectCast<typename QtSharedPointer::RemovePointer<X>::Type, T>(src);
 }
-#endif
 
+template<typename T>
+QWeakPointer<typename QtPrivate::QEnableIf<QtPrivate::IsPointerToTypeDerivedFromQObject<T*>::Value, T>::Type>
+qWeakPointerFromVariant(const QVariant &variant)
+{
+    return QWeakPointer<T>(qobject_cast<T*>(QtSharedPointer::weakPointerFromVariant_internal(variant).data()));
+}
+template<typename T>
+QSharedPointer<typename QtPrivate::QEnableIf<QtPrivate::IsPointerToTypeDerivedFromQObject<T*>::Value, T>::Type>
+qSharedPointerFromVariant(const QVariant &variant)
+{
+    return qSharedPointerObjectCast<T>(QtSharedPointer::sharedPointerFromVariant_internal(variant));
+}
+
+#endif
 
 template<typename T> Q_DECLARE_TYPEINFO_BODY(QWeakPointer<T>, Q_MOVABLE_TYPE);
 template<typename T> Q_DECLARE_TYPEINFO_BODY(QSharedPointer<T>, Q_MOVABLE_TYPE);