1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
//@ run-rustfix
#![expect(incomplete_features)]
#![feature(explicit_tail_calls)]
fn a() {
become (|| ())();
//~^ ERROR: tail calling closures directly is not allowed
}
fn aa((): ()) {
become (|()| ())(());
//~^ ERROR: tail calling closures directly is not allowed
}
fn aaa((): (), _: i32) {
become (|(), _| ())((), 1);
//~^ ERROR: tail calling closures directly is not allowed
}
fn v((): (), ((), ()): ((), ())) -> (((), ()), ()) {
let f = |(), ((), ())| (((), ()), ());
become f((), ((), ()));
//~^ ERROR: tail calling closures directly is not allowed
}
fn main() {
a();
aa(());
aaa((), 1);
v((), ((), ()));
}
|
