1 files changed, 5 insertions, 4 deletions
diff --git a/src/corelib/thread/qrunnable.h b/src/corelib/thread/qrunnable.h
index f00c58d51d..28d14a46c0 100644
--- a/src/corelib/thread/qrunnable.h
+++ b/src/corelib/thread/qrunnable.h
@@ -38,20 +38,21 @@
 
 QT_BEGIN_NAMESPACE
 
-
-class QRunnable
+class Q_CORE_EXPORT QRunnable
 {
     int ref;
 
     friend class QThreadPool;
     friend class QThreadPoolPrivate;
     friend class QThreadPoolThread;
-
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    Q_DISABLE_COPY(QRunnable)
+#endif
 public:
     virtual void run() = 0;
 
     QRunnable() : ref(0) { }
-    virtual ~QRunnable() { }
+    virtual ~QRunnable();
 
     bool autoDelete() const { return ref != -1; }
     void setAutoDelete(bool _autoDelete) { ref = _autoDelete ? 0 : -1; }