4 #define SA(...) __attribute__((swift_async(__VA_ARGS__)))  macro
6 SA(none) int a; // expected-warning{{'swift_async' attribute only applies to functions and Objectiv…  function
8 SA(none) void b(void);  function
10 SA(not_swift_private, 0) void c(void); // expected-error{{'swift_async' attribute parameter 2 is ou…  function
11 SA(swift_private, 1) void d(void); // expected-error{{'swift_async' attribute parameter 2 is out of…  function
12 SA(swift_private, 1) void e(int); // expected-error{{'swift_async' completion handler parameter mus…  function
13 SA(not_swift_private, 1) void f(int (^)(void)); // expected-error-re{{'swift_async' completion hand…  function
14 SA(swift_private, 1) void g(void (^)(void));  function
16 SA(none, 1) void h(void); // expected-error{{'swift_async' attribute takes one argument}}  function
17 SA() void i(void); // expected-error{{'swift_async' attribute takes at least 1 argument}}  function
18 SA(not_swift_private) void j(void); // expected-error{{'swift_async' attribute requires exactly 2 a…  function
19 SA(43) void k(void); // expected-error{{'swift_async' attribute requires parameter 1 to be an ident…  function
20 SA(not_a_thing, 0) void l(void); // expected-error{{first argument to 'swift_async' must be either …  function
26 -(void)m4 SA(none);  method