27 lines
656 B
Rust
27 lines
656 B
Rust
//@ compile-flags: -Znext-solver
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//@ check-pass
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// Regression test for trait-system-refactor-initiative#84.
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//
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// We try to infer `T::Rigid: Into<?0>` and have 2 candidates from where-clauses:
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//
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// - `Into<String>`
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// - `Into<<T::Rigid as Elaborate>::Assoc>`
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//
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// This causes ambiguity unless we normalize the alias in the second candidate
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// to detect that they actually result in the same constraints.
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trait Trait {
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type Rigid: Elaborate<Assoc = String> + Into<String> + Default;
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}
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trait Elaborate: Into<Self::Assoc> {
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type Assoc;
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}
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fn test<T: Trait>() {
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let rigid: T::Rigid = Default::default();
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drop(rigid.into());
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}
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fn main() {}
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