-#![feature(box_syntax)]
+#![feature(box_syntax, fn_traits, unboxed_closures)]
#![warn(clippy::no_effect_underscore_binding)]
-#![allow(dead_code)]
-#![allow(path_statements)]
-#![allow(clippy::deref_addrof)]
-#![allow(clippy::redundant_field_names)]
-#![feature(untagged_unions)]
+#![allow(dead_code, path_statements)]
+#![allow(clippy::deref_addrof, clippy::redundant_field_names, clippy::uninlined_format_args)]
struct Unit;
struct Tuple(i32);
0
}
+struct GreetStruct1;
+
+impl FnOnce<(&str,)> for GreetStruct1 {
+ type Output = ();
+
+ extern "rust-call" fn call_once(self, (who,): (&str,)) -> Self::Output {
+ println!("hello {}", who);
+ }
+}
+
+struct GreetStruct2();
+
+impl FnOnce<(&str,)> for GreetStruct2 {
+ type Output = ();
+
+ extern "rust-call" fn call_once(self, (who,): (&str,)) -> Self::Output {
+ println!("hello {}", who);
+ }
+}
+
+struct GreetStruct3;
+
+impl FnOnce<(&str,)> for GreetStruct3 {
+ type Output = ();
+
+ extern "rust-call" fn call_once(self, (who,): (&str,)) -> Self::Output {
+ println!("hello {}", who);
+ }
+}
+
fn main() {
let s = get_struct();
let s2 = get_struct();
DropTuple(0);
DropEnum::Tuple(0);
DropEnum::Struct { field: 0 };
+ GreetStruct1("world");
+ GreetStruct2()("world");
+ GreetStruct3 {}("world");
}