[BUGFIX] Fix crash in parser.

[ginac.git] / check / time_antipode.cpp

diff --git a/check/time_antipode.cpp b/check/time_antipode.cpp
index ba1169b41d10afc2ab543d8526fb8598465dd2a5..b5109ce8ecd1e117a583f33c3027035eb2daf2a0 100644 (file)
--- a/check/time_antipode.cpp
+++ b/check/time_antipode.cpp
@@ -12,11 +12,11 @@
  *  This program is based on work by
  *      Isabella Bierenbaum <bierenbaum@thep.physik.uni-mainz.de> and
  *      Dirk Kreimer <dkreimer@bu.edu>.
- *  For details, please see <http://www.arXiv.org/abs/hep-th/0111192>.
+ *  For details, please see <https://www.arXiv.org/abs/hep-th/0111192>.
  */
 
 /*
- *  GiNaC Copyright (C) 1999-2016 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2024 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
@@ -133,7 +133,7 @@ const ex Sigma::evaluate(const symbol &x, const unsigned grad) const
 }
 
 
-/** Class of vertices of type Sigma_flipped, sitting in the upper fermionline of Vacuum; no consequences for Gamma. */
+/** Class of vertices of type Sigma_flipped, sitting in the upper fermion line of Vacuum; no consequences for Gamma. */
 class Sigma_flipped : public Sigma {
 public:
        Sigma_flipped(ijpair ij = ijpair(0,0)) : Sigma(ij) { }
@@ -308,7 +308,7 @@ bool node::operator<(const node &n) const
                return typeid(*vert).before(typeid(*n.vert));
        // Are the indices of the top-level nodes different?
        if (!(*vert==*n.vert))
-               return (vert<n.vert);
+               return (*vert<*n.vert);
        // Are the sets of children different, one by one?
        return (children<n.children);
 }