Index: trunk/Mars/mbase/MTime.cc
===================================================================
--- trunk/Mars/mbase/MTime.cc	(revision 18591)
+++ trunk/Mars/mbase/MTime.cc	(revision 18592)
@@ -1152,5 +1152,5 @@
 {
     out << *this;
-    return out;
+    return bool(out);
 }