26 using std::optional;
94         optional<T> opt;  in test_with_test_type()
95         optional<int> other(42);  in test_with_test_type()
109         optional<T> opt(101);  in test_with_test_type()
110         optional<int> other(42);  in test_with_test_type()
125         optional<T> opt(101);  in test_with_test_type()
126         optional<int> other;  in test_with_test_type()
138         optional<T> opt;  in test_with_test_type()
139         optional<int> other;  in test_with_test_type()
154     using OptInt = std::optional<int>;  in test_ambiguous_assign()
160             std::optional<T> t;  in test_ambiguous_assign()
168             using Opt = std::optional<T>;  in test_ambiguous_assign()
179             std::optional<T> t;  in test_ambiguous_assign()
189             std::optional<T> t;  in test_ambiguous_assign()
197             using Opt = std::optional<T>;  in test_ambiguous_assign()
209         optional<int> opt;  in test()
210         optional<short> opt2;  in test()
216         optional<int> opt;  in test()
217         optional<short> opt2(short{2});  in test()
225         optional<int> opt(3);  in test()
226         optional<short> opt2;  in test()
232         optional<int> opt(3);  in test()
233         optional<short> opt2(short{2});  in test()
274       auto opt1 = std::optional<StateTracker>(state[0]);  in test()
277       auto opt2 = std::optional<StateTracker>(state[1]);  in test()
286       auto opt1 = std::optional<StateTracker>(state[0]);  in test()
289       auto opt2 = std::optional<StateTracker>(state[1]);  in test()
310         optional<std::unique_ptr<B>> opt;  in main()
311         optional<std::unique_ptr<D>> other(new D());  in main()
320         optional<X> opt;  in main()
321         optional<int> opt2(42);  in main()