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[ginac.git] / ginac / fail.h

diff --git a/ginac/fail.h b/ginac/fail.h
index 6984ae92918cf2e9db70cc19be7766fa056006b6..5b3264610c085d36d71821cf5fcfd45d938a2543 100644 (file)
--- a/ginac/fail.h
+++ b/ginac/fail.h
@@ -4,7 +4,7 @@
  *  somewhat obsolete (most of this can be replaced by exceptions). */
 
 /*
- *  GiNaC Copyright (C) 1999-2006 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2019 Johannes Gutenberg University Mainz, Germany
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
@@ -21,10 +21,11 @@
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
-#ifndef __GINAC_FAIL_H__
-#define __GINAC_FAIL_H__
+#ifndef GINAC_FAIL_H
+#define GINAC_FAIL_H
 
 #include "basic.h"
+#include "archive.h"
 
 namespace GiNaC {
 
@@ -34,13 +35,14 @@ class fail : public basic
        
        // functions overriding virtual functions from base classes
 protected:
-       unsigned return_type() const { return return_types::noncommutative_composite; };
+       unsigned return_type() const override { return return_types::noncommutative_composite; };
 
        // non-virtual functions in this class
 protected:
        void do_print(const print_context & c, unsigned level) const;
 };
+GINAC_DECLARE_UNARCHIVER(fail);
 
 } // namespace GiNaC
 
-#endif // ndef __GINAC_FAIL_H__
+#endif // ndef GINAC_FAIL_H