rust/tests/ui/impl-trait/issue-49685.rs
2024-02-16 20:02:50 +00:00

14 lines
347 B
Rust

//@ run-pass
// Regression test for #49685: drop elaboration was not revealing the
// value of `impl Trait` returns, leading to an ICE.
fn main() {
let _ = Some(())
.into_iter()
.flat_map(|_| Some(()).into_iter().flat_map(func));
}
fn func(_: ()) -> impl Iterator<Item = ()> {
Some(()).into_iter().flat_map(|_| vec![])
}