iterate List by value

[rust.git] / tests / ui / map_flatten.rs

diff --git a/tests/ui/map_flatten.rs b/tests/ui/map_flatten.rs
index 66137a50ae8da563188dbe3845516b86d15c730b..a608601039ce783c80e3dfa2a3abdc4d94ea5dc5 100644 (file)
--- a/tests/ui/map_flatten.rs
+++ b/tests/ui/map_flatten.rs
@@ -5,4 +5,5 @@
 
 fn main() {
     let _: Vec<_> = vec![5_i8; 6].into_iter().map(|x| 0..x).flatten().collect();
+    let _: Option<_> = (Some(Some(1))).map(|x| x).flatten();
 }