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//@ run-rustfix
#![expect(incomplete_features)]
#![feature(explicit_tail_calls)]
fn a() {
become ((|| ()) as fn() -> _)();
//~^ ERROR: tail calling closures directly is not allowed
}
fn aa((): ()) {
become ((|()| ()) as fn(_) -> _)(());
//~^ ERROR: tail calling closures directly is not allowed
}
fn aaa((): (), _: i32) {
become ((|(), _| ()) as fn(_, _) -> _)((), 1);
//~^ ERROR: tail calling closures directly is not allowed
}
fn v((): (), ((), ()): ((), ())) -> (((), ()), ()) {
let f = |(), ((), ())| (((), ()), ());
become (f as fn(_, _) -> _)((), ((), ()));
//~^ ERROR: tail calling closures directly is not allowed
}
fn main() {
a();
aa(());
aaa((), 1);
v((), ((), ()));
}
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