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https://github.com/rust-lang/rust
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91b9ffeab0
In `report_fullfillment_errors` push back `T: Sized`, `T: WellFormed` and coercion errors to the end of the list. The pre-existing deduplication logic eliminates redundant errors better that way, keeping the resulting output with fewer errors than before, while also having more detail.
23 lines
303 B
Rust
23 lines
303 B
Rust
struct A<T>(T);
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struct B;
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trait I<T> {}
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impl I<i32> for B {}
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impl I<u32> for B {}
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trait V<U> {
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fn method(self) -> U;
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}
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impl<T, U> V<U> for A<T>
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where
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T: I<U>,
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{
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fn method(self) -> U { unimplemented!() }
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}
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fn main() {
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let a = A(B);
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a.method(); //~ ERROR type annotations needed
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}
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