mirror of https://github.com/rust-lang/rust
21 lines
443 B
Rust
21 lines
443 B
Rust
//@ compile-flags: -Znext-solver=coherence
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//@ check-pass
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trait Mirror {
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type Assoc;
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}
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impl<T> Mirror for T {
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type Assoc = T;
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}
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trait Foo {}
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trait Bar {}
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// self type starts out as `?0` but is constrained to `()`
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// due to the where clause below. Because `(): Bar` does not
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// hold in intercrate mode, we can prove the impls disjoint.
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impl<T> Foo for T where (): Mirror<Assoc = T> {}
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impl<T> Foo for T where T: Bar {}
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fn main() {}
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