$OpenBSD: patch-mimepp_msgcmp_h,v 1.1 2010/05/19 16:22:20 espie Exp $
--- mimepp/msgcmp.h.orig	Wed May 19 18:20:11 2010
+++ mimepp/msgcmp.h	Wed May 19 18:20:39 2010
@@ -33,7 +33,8 @@
 #include <mimepp/string.h>
 #endif
 
-class ostream;
+#include <iosfwd>
+using std::ostream;
 
 
 //=============================================================================