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