11 lines
252 B
Rust
11 lines
252 B
Rust
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#![feature(trait_alias)]
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use std::future::Future;
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trait F<Fut: Future<Output = usize>> = Fn() -> Fut;
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fn f<Fut>(a: dyn F<Fut>) {}
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//~^ ERROR the size for values of type `(dyn Fn() -> Fut + 'static)` cannot be known at compilation time
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fn main() {}
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