X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?a=blobdiff_plain;f=ginac%2Ffail.h;h=75a75bfcc10a01921228d7e2bce23939b3882874;hb=e8c9b4a51a1c8f1230b023b0af6a708881ef23d3;hp=3c514797672e95ad6b871f99a4ec832bad9bcd7f;hpb=aa6281216091efd92dc5fcc3f96c7189114e80f1;p=ginac.git

diff --git a/ginac/fail.h b/ginac/fail.h
index 3c514797..75a75bfc 100644
--- a/ginac/fail.h
+++ b/ginac/fail.h
@@ -1,10 +1,10 @@
 /** @file fail.h
  *
  *  Interface to class signaling failure of operation. Considered obsolete
- *  (all of this is replaced by exceptions). */
+ *  somewhat obsolete (most of this can be replaced by exceptions). */
 
 /*
- *  GiNaC Copyright (C) 1999-2001 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2003 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
@@ -33,10 +33,12 @@ class fail : public basic
 	GINAC_DECLARE_REGISTERED_CLASS(fail, basic)
 	
 	// functions overriding virtual functions from base classes
-public:
-	void print(const print_context & c, unsigned level = 0) const;
 protected:
-	unsigned return_type(void) const { return return_types::noncommutative_composite; };
+	unsigned return_type() const { return return_types::noncommutative_composite; };
+
+	// non-virtual functions in this class
+protected:
+	void do_print(const print_context & c, unsigned level) const;
 };
 
 /** Specialization of is_exactly_a<fail>(obj) for fail objects. */