15 lines
318 B
Rust
15 lines
318 B
Rust
//@ run-pass
|
|
#![allow(unused_must_use)]
|
|
fn bug<T>() -> impl Iterator<Item = [(); { |x: u32| { x }; 4 }]> {
|
|
std::iter::empty()
|
|
}
|
|
|
|
fn ok<T>() -> Box<dyn Iterator<Item = [(); { |x: u32| { x }; 4 }]>> {
|
|
Box::new(std::iter::empty())
|
|
}
|
|
|
|
fn main() {
|
|
for _item in ok::<u32>() {}
|
|
for _item in bug::<u32>() {}
|
|
}
|