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// Regression test for #88118. Used to ICE.
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//@ edition:2021
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//@ check-pass
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fn foo<MsU>(handler: impl FnOnce() -> MsU + Clone + 'static) {
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Box::new(move |value| {
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(|_| handler.clone()())(value);
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None
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}) as Box<dyn Fn(i32) -> Option<i32>>;
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}
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fn main() {}
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