Avoid multiple definitions of `lst::info` (MinGW compile fix)

[ginac.git] / ginac / lst.h

diff --git a/ginac/lst.h b/ginac/lst.h
index d6a45c15e9111dd82c5b78931c564ff2287e65fe..8591861c1a252a49690c96e9423af6359bb93301 100644 (file)
--- a/ginac/lst.h
+++ b/ginac/lst.h
@@ -3,7 +3,7 @@
  *  Definition of GiNaC's lst. */
 
 /*
- *  GiNaC Copyright (C) 1999-2010 Johannes Gutenberg University Mainz, Germany
+ *  GiNaC Copyright (C) 1999-2021 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
@@ -42,6 +42,7 @@ template<> inline char lst::get_close_delim() { return '}'; }
 
 // defined in lst.cpp
 template<> bool lst::info(unsigned inf) const;
+extern template bool container<std::list>::info(unsigned) const;
 GINAC_DECLARE_UNARCHIVER(lst);
 
 } // namespace GiNaC