1 files changed, 2 insertions, 0 deletions
diff --git a/src/corelib/io/qurl.h b/src/corelib/io/qurl.h
index 15d4174..d624418 100644
--- a/src/corelib/io/qurl.h
+++ b/src/corelib/io/qurl.h
@@ -56,6 +56,7 @@ QT_MODULE(Core)
 
 class QUrlPrivate;
 class QDataStream;
+class QMutexLocker;
 
 class Q_CORE_EXPORT QUrl
 {
@@ -274,6 +275,7 @@ protected:
 #endif
 
 private:
+    void detach(QMutexLocker &locker);
     QUrlPrivate *d;
 public:
     typedef QUrlPrivate * DataPtr;