23 lines
618 B
Rust
23 lines
618 B
Rust
// Unlike in `super-trait-knowable-1.rs`, the knowable
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// super trait bound is in a nested goal so this would not
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// compile if we were to only elaborate root goals.
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//@ revisions: current next
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//@ ignore-compare-mode-next-solver (explicit revisions)
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//@[next] compile-flags: -Znext-solver
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//@[next] check-pass
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trait Super {}
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trait Sub<T>: Super {}
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struct W<T>(T);
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trait Bound<T> {}
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impl<T: Sub<U>, U> Bound<W<U>> for T {}
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trait Overlap<T> {}
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impl<T, U: Bound<W<T>>> Overlap<T> for U {}
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impl<T> Overlap<T> for () {}
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//[current]~^ ERROR conflicting implementations of trait `Overlap<_>` for type `()`
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fn main() {}
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