Avoid "catching polymorphic type by value" warnings.

[ginac.git] / check / exam_differentiation.cpp

diff --git a/check/exam_differentiation.cpp b/check/exam_differentiation.cpp
index 74a0e959297924f6299fcc54d5ffe0cf51f04632..dac69e3dd26d77dde58e3961a1b45c4147cb76d4 100644 (file)
--- a/check/exam_differentiation.cpp
+++ b/check/exam_differentiation.cpp
@@ -3,7 +3,7 @@
  *  Tests for symbolic differentiation, including various functions. */
 
 /*
- *  GiNaC Copyright (C) 1999-2016 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2020 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