216     string first_name, second_name;  in operator ()()  local
217     first_name = first->get_linkage_name();  in operator ()()
218     if (first_name.empty())  in operator ()()
219       first_name = first->get_name();  in operator ()()
220     ABG_ASSERT(!first_name.empty());  in operator ()()
227     return first_name < second_name;  in operator ()()
250     string first_name, second_name;  in operator ()()  local
251     first_name = first->get_linkage_name();  in operator ()()
252     if (first_name.empty())  in operator ()()
254 	first_name = first->get_pretty_representation();  in operator ()()
258     ABG_ASSERT(!first_name.empty());  in operator ()()
266 	first_name = first->get_pretty_representation();  in operator ()()
267 	ABG_ASSERT(!first_name.empty());  in operator ()()
271     return first_name < second_name;  in operator ()()