Don't force every algebraic class to implement archiving/unarchiving.

[ginac.git] / ginac / fderivative.cpp

diff --git a/ginac/fderivative.cpp b/ginac/fderivative.cpp
index 82a0c8d5c88a4f83c00c9bbe48dea5be26e5b73a..efe2a692a36c06d453130870af4ef0baebfff9ab 100644 (file)
--- a/ginac/fderivative.cpp
+++ b/ginac/fderivative.cpp
@@ -63,8 +63,9 @@ fderivative::fderivative(unsigned ser, const paramset & params, std::auto_ptr<ex
 // archiving
 //////////
 
-fderivative::fderivative(const archive_node &n, lst &sym_lst) : inherited(n, sym_lst)
+void fderivative::read_archive(const archive_node& n, lst& sym_lst)
 {
+       inherited::read_archive(n, sym_lst);
        unsigned i = 0;
        while (true) {
                unsigned u;
@@ -75,6 +76,7 @@ fderivative::fderivative(const archive_node &n, lst &sym_lst) : inherited(n, sym
                ++i;
        }
 }
+GINAC_BIND_UNARCHIVER(fderivative);
 
 void fderivative::archive(archive_node &n) const
 {
@@ -86,7 +88,6 @@ void fderivative::archive(archive_node &n) const
        }
 }
 
-DEFAULT_UNARCHIVE(fderivative)
 
 //////////
 // functions overriding virtual functions from base classes