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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.
31 lines
497 B
Rust
31 lines
497 B
Rust
// Check that we get an error in a multidisptach scenario where the
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// set of impls is ambiguous.
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trait Convert<Target> {
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fn convert(&self) -> Target;
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}
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impl Convert<i8> for i32 {
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fn convert(&self) -> i8 {
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*self as i8
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}
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}
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impl Convert<i16> for i32 {
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fn convert(&self) -> i16 {
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*self as i16
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}
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}
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fn test<T,U>(_: T, _: U)
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where T : Convert<U>
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{
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}
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fn a() {
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test(22, std::default::Default::default());
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//~^ ERROR type annotations needed
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}
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fn main() {}
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