1 files changed, 2 insertions, 1 deletions
diff --git a/src/corelib/thread/qreadwritelock.h b/src/corelib/thread/qreadwritelock.h
index 51d42b54c..4742beaa2 100644
--- a/src/corelib/thread/qreadwritelock.h
+++ b/src/corelib/thread/qreadwritelock.h
@@ -190,7 +190,8 @@ inline QWriteLocker::QWriteLocker(QReadWriteLock *areadWriteLock)
 class Q_CORE_EXPORT QReadWriteLock
 {
 public:
-    inline explicit QReadWriteLock() { }
+    enum RecursionMode { NonRecursive, Recursive };
+    inline explicit QReadWriteLock(RecursionMode = NonRecursive) { }
     inline ~QReadWriteLock() { }
 
     static inline void lockForRead() { }