mirror of https://github.com/rust-lang/rust.git
25 lines
728 B
Rust
25 lines
728 B
Rust
//@ check-pass
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// Regression test for <https://github.com/rust-lang/rust/issues/140645>.
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// Test that we lower impossible-to-satisfy associated type bounds, which
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// may for example constrain impl parameters.
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pub trait Other {}
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pub trait Trait {
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type Assoc
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where
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Self: Sized;
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}
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impl Other for dyn Trait {}
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// `dyn Trait<Assoc = ()>` is a different "nominal type" than `dyn Trait`.
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impl Other for dyn Trait<Assoc = ()> {}
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//~^ WARN unnecessary associated type bound for dyn-incompatible associated type
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// I hope it's clear that `dyn Trait` (w/o `Assoc`) wouldn't match this impl.
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impl<T> dyn Trait<Assoc = T> {}
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//~^ WARN unnecessary associated type bound for dyn-incompatible associated type
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fn main() {}
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