27 lines
611 B
Rust
27 lines
611 B
Rust
//@ 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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//@ check-pass
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// Ensure we don't have ambiguity when upcasting to two supertraits
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// that are identical modulo normalization.
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trait Supertrait<T> {
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fn method(&self) {}
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}
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impl<T> Supertrait<T> for () {}
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trait Identity {
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type Selff;
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}
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impl<Selff> Identity for Selff {
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type Selff = Selff;
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}
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trait Trait<P>: Supertrait<()> + Supertrait<<P as Identity>::Selff> {}
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impl<P> Trait<P> for () {}
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fn main() {
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let x: &dyn Trait<()> = &();
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let x: &dyn Supertrait<()> = x;
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}
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