25         std::map<int, int>::node_type node;  in test()  local
26 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
29         std::multimap<int, int>::node_type node;  in test()  local
30 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
34         std::set<int> node;  in test()  local
35 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
38         std::multiset<int> node;  in test()  local
39 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
42         std::unordered_map<int, int> node;  in test()  local
43 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
46         std::unordered_multimap<int, int> node;  in test()  local
47 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
50         std::unordered_set<int> node;  in test()  local
51 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()
54         std::unordered_multiset<int> node;  in test()  local
55 …node.empty(); // expected-warning {{ignoring return value of function declared with 'nodiscard' at…  in test()