Index: libcfa/src/fstream.cfa
===================================================================
--- libcfa/src/fstream.cfa	(revision f93c50af1293992245e177607785a3b5c96800c1)
+++ libcfa/src/fstream.cfa	(revision a51a02de31d78381190b6b5aafa5260020147369)
@@ -185,4 +185,7 @@
 } // release
 
+void lock( ofstream & os ) { acquire( os ); }
+void unlock( ofstream & os ) { release( os ); }
+
 void ?{}( osacquire & acq, ofstream & os ) { lock( os.lock$ ); &acq.os = &os; }
 void ^?{}( osacquire & acq ) { release( acq.os ); }