| //@ run-rustfix |
| #![allow(dead_code, path_statements)] |
| fn foo1(s: &str) -> impl Iterator<Item = String> + '_ { |
| None.into_iter() |
| .flat_map(move |()| s.chars().map(|c| format!("{}{}", c, s))) |
| //~^ ERROR captured variable cannot escape `FnMut` closure body |
| //~| HELP consider adding 'move' keyword before the nested closure |
| } |
| |
| fn foo2(s: &str) -> impl Sized + '_ { |
| move |()| s.chars().map(|c| format!("{}{}", c, s)) |
| //~^ ERROR lifetime may not live long enough |
| //~| HELP consider adding 'move' keyword before the nested closure |
| } |
| |
| pub struct X; |
| pub fn foo3<'a>( |
| bar: &'a X, |
| ) -> impl Iterator<Item = ()> + 'a { |
| Some(()).iter().flat_map(move |()| { |
| Some(()).iter().map(|()| { bar; }) //~ ERROR captured variable cannot escape |
| //~^ HELP consider adding 'move' keyword before the nested closure |
| }) |
| } |
| |
| fn main() {} |
