1 files changed, 4 insertions, 2 deletions
diff --git a/src/corelib/tools/qsharedpointer.h b/src/corelib/tools/qsharedpointer.h
index 901862e7a2..3e05bf1ece 100644
--- a/src/corelib/tools/qsharedpointer.h
+++ b/src/corelib/tools/qsharedpointer.h
@@ -67,8 +67,10 @@ public:
 
     // constructors
     QSharedPointer();
-    explicit QSharedPointer(T *ptr);
-    QSharedPointer(T *ptr, Deleter d);
+    template <typename X> explicit QSharedPointer(X *ptr);
+    template <typename X, typename Deleter> QSharedPointer(X *ptr, Deleter d);
+    QSharedPointer(std::nullptr_t);
+    template <typename Deleter> QSharedPointer(std::nullptr_t, Deleter d);
     QSharedPointer(const QSharedPointer<T> &other);
     QSharedPointer(const QWeakPointer<T> &other);