mirror of https://github.com/rust-lang/rust
23 lines
459 B
Rust
23 lines
459 B
Rust
// This used to ICE because it creates an `impl Trait` that captures a
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// hidden empty region.
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//@ check-pass
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fn server() -> impl FilterBase2 {
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segment2(|| { loop { } }).map2(|| "")
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}
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trait FilterBase2 {
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fn map2<F>(self, _fn: F) -> Map2<F> where Self: Sized { loop { } }
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}
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struct Map2<F> { _func: F }
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impl<F> FilterBase2 for Map2<F> { }
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fn segment2<F>(_fn: F) -> Map2<F> where F: Fn() -> Result<(), ()> {
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loop { }
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}
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fn main() { server(); }
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