Lines Matching refs:optional
11 // <optional>
13 // A program that necessitates the instantiation of template optional for
16 #include <optional>
20 using std::optional;
24 optional<nullopt_t> opt; // expected-note 1 {{requested here}}
25 optional<const nullopt_t> opt1; // expected-note 1 {{requested here}}
26 optional<nullopt_t &> opt2; // expected-note 1 {{requested here}}
27 optional<nullopt_t &&> opt3; // expected-note 1 {{requested here}}
28 // expected-error@optional:* 4 {{instantiation of optional with nullopt_t is ill-formed}}
