38 lines
856 B
Rust
38 lines
856 B
Rust
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// compile-flags: -Ztrait-solver=next
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#![feature(rustc_attrs)]
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// Test that having both an inductive and a coinductive cycle
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// is handled correctly.
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#[rustc_coinductive]
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trait Trait {}
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impl<T: Inductive + Coinductive> Trait for T {}
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trait Inductive {}
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impl<T: Trait> Inductive for T {}
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#[rustc_coinductive]
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trait Coinductive {}
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impl<T: Trait> Coinductive for T {}
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fn impls_trait<T: Trait>() {}
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#[rustc_coinductive]
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trait TraitRev {}
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impl<T: CoinductiveRev + InductiveRev> TraitRev for T {}
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trait InductiveRev {}
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impl<T: TraitRev> InductiveRev for T {}
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#[rustc_coinductive]
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trait CoinductiveRev {}
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impl<T: TraitRev> CoinductiveRev for T {}
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fn impls_trait_rev<T: TraitRev>() {}
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fn main() {
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impls_trait::<()>();
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//~^ ERROR overflow evaluating the requirement
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impls_trait_rev::<()>();
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//~^ ERROR overflow evaluating the requirement
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}
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