sym_name = concat ("typeinfo for ", typename, (char *) NULL);
make_cleanup (xfree, sym_name);
minsym = lookup_minimal_symbol (sym_name, NULL, NULL);
sym_name = concat ("typeinfo for ", typename, (char *) NULL);
make_cleanup (xfree, sym_name);
minsym = lookup_minimal_symbol (sym_name, NULL, NULL);