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Add more detail to type inference error
When encountering code where type inference fails, add more actionable information: ``` fn main() { let foo = Vec::new(); } ``` ``` error[E0282]: type annotations needed for `std::vec::Vec<_>` --> $DIR/vector-no-ann.rs:2:16 | LL | let foo = Vec::new(); | --- ^^^^^^^^ cannot infer type for `T` | | | consider giving `foo` the type `std::vec::Vec<_>` with the type parameter `T` specified ``` We still need to modify type printing to optionally accept a `TypeVariableTable` in order to properly print `std::vec::Vec<T>`. CC #25633.
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4 changes: 2 additions & 2 deletions
4
src/test/ui/methods/method-ambig-one-trait-unknown-int-type.stderr
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4 changes: 2 additions & 2 deletions
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src/test/ui/type/type-check/cannot_infer_local_or_array.stderr
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2 changes: 1 addition & 1 deletion
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src/test/ui/type/type-check/cannot_infer_local_or_vec_in_tuples.stderr
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src/test/ui/unboxed-closures/unboxed-closures-failed-recursive-fn-2.stderr
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Original file line number | Original file line | Diff line number | Diff line change |
---|---|---|---|
@@ -1,4 +1,4 @@ | |||
fn main() { | fn main() { | ||
let _foo = Vec::new(); | let _foo = Vec::new(); | ||
//~^ ERROR type annotations needed [E0282] | //~^ ERROR type annotations needed | ||
} | } |
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