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[ginac.git] / ginac / basic.cpp

diff --git a/ginac/basic.cpp b/ginac/basic.cpp
index c37ed3e3ded529a816ab82189da3f6fd42deeafa..2dd853d9f76f09d05842406919cce0a90d97ba0f 100644 (file)
--- a/ginac/basic.cpp
+++ b/ginac/basic.cpp
@@ -3,7 +3,7 @@
  *  Implementation of GiNaC's ABC. */
 
 /*
- *  GiNaC Copyright (C) 1999-2004 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2005 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
@@ -617,9 +617,11 @@ ex basic::subs_one_level(const exmap & m, unsigned options) const
        exmap::const_iterator it;
 
        if (options & subs_options::no_pattern) {
-               it = m.find(*this);
+               ex thisex = *this;
+               it = m.find(thisex);
                if (it != m.end())
                        return it->second;
+               return thisex;
        } else {
                for (it = m.begin(); it != m.end(); ++it) {
                        lst repl_lst;