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[ginac.git] / ginac / relational.cpp

diff --git a/ginac/relational.cpp b/ginac/relational.cpp
index fcb84eca779bf9e3151f52ea4b653383216be407..92b54318392afd8ea89120522a0345ba6dc2f5b5 100644 (file)
--- a/ginac/relational.cpp
+++ b/ginac/relational.cpp
@@ -3,7 +3,7 @@
  *  Implementation of relations between expressions */
 
 /*
- *  GiNaC Copyright (C) 1999-2015 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
@@ -298,7 +298,7 @@ unsigned relational::calchash() const
 
 relational::safe_bool relational::make_safe_bool(bool cond) const
 {
-       return cond? &safe_bool_helper::nonnull : 0;
+       return cond? &safe_bool_helper::nonnull : nullptr;
 }
 
 /** Cast the relational into a Boolean, mainly for evaluation within an