Add test for issue-57201
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// Regression test for #57201
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#![feature(impl_trait_in_bindings)]
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#![allow(incomplete_features)]
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fn bug<'a, 'b, T>()
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where
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'a: 'b,
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{
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let f: &impl Fn(&'a T) -> &'b T = &|x| x;
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//~^ ERROR: lifetimes in impl Trait types in bindings are not currently supported
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}
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fn main() {}
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error: lifetimes in impl Trait types in bindings are not currently supported
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--> $DIR/issue-57201.rs:10:13
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LL | let f: &impl Fn(&'a T) -> &'b T = &|x| x;
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| ^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to previous error
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