14 lines
364 B
Rust
14 lines
364 B
Rust
trait A: B + A {}
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//~^ ERROR cycle detected when computing the super predicates of `A`. see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information. [E0391]
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trait B {}
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impl A for () {}
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impl B for () {}
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fn main() {
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let a: Box<dyn A> = Box::new(());
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let _b: Box<dyn B> = a;
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}
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