Account for impl Trait { when impl Trait for Type { was intended
#131273
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On editions where bare traits are never allowed, detect if the user has
written `impl Trait` with no type, silence any dyn-compatibility errors,
and provide a structured suggestion for the potentially missing type:
```
error[E0782]: trait objects must include the `dyn` keyword
--> $DIR/missing-for-type-in-impl.rs:8:6
|
LL | impl Foo<i64> {
| ^^^^^^^^
|
help: add `dyn` keyword before this trait
|
LL | impl dyn Foo<i64> {
| +++
help: you might have intended to implement this trait for a given type
|
LL | impl Foo<i64> for /* Type */ {
| ++++++++++++++
```
|
r? @Nadrieril rustbot has assigned @Nadrieril. Use |
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HIR ty lowering was modified cc @fmease |
compiler-errors
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Oct 4, 2024
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r=me when green |
compiler/rustc_trait_selection/src/error_reporting/traits/fulfillment_errors.rs
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@bors r+ rollup |
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…kingjubilee Rollup of 9 pull requests Successful merges: - rust-lang#129517 (Compute array length from type for unconditional panic lint. ) - rust-lang#130367 (Check elaborated projections from dyn don't mention unconstrained late bound lifetimes) - rust-lang#130403 (Stabilize `const_slice_from_raw_parts_mut`) - rust-lang#130633 (Add support for reborrowing pinned method receivers) - rust-lang#131105 (update `Literal`'s intro) - rust-lang#131194 (Fix needless_lifetimes in stable_mir) - rust-lang#131260 (rustdoc: cleaner errors on disambiguator/namespace mismatches) - rust-lang#131267 (Stabilize `BufRead::skip_until`) - rust-lang#131273 (Account for `impl Trait {` when `impl Trait for Type {` was intended) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#131273 - estebank:issue-131051, r=compiler-errors Account for `impl Trait {` when `impl Trait for Type {` was intended On editions where bare traits are never allowed, detect if the user has written `impl Trait` with no type, silence any dyn-compatibility errors, and provide a structured suggestion for the potentially missing type: ``` error[E0782]: trait objects must include the `dyn` keyword --> $DIR/missing-for-type-in-impl.rs:8:6 | LL | impl Foo<i64> { | ^^^^^^^^ | help: add `dyn` keyword before this trait | LL | impl dyn Foo<i64> { | +++ help: you might have intended to implement this trait for a given type | LL | impl Foo<i64> for /* Type */ { | ++++++++++++++ ``` CC rust-lang#131051.
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On editions where bare traits are never allowed, detect if the user has written
impl Traitwith no type, silence any dyn-compatibility errors, and provide a structured suggestion for the potentially missing type:CC #131051.