Add additional context for non-sructural type constant used in pattern

2024-12-04T20:29:36+00:00

- Point at type that should derive `PartialEq` to be structural. - Point at manual `impl PartialEq`, explaining that it is not sufficient to be structural. ``` error: constant of non-structural type `MyType` in a pattern --> $DIR/const-partial_eq-fallback-ice.rs:14:12 | LL | struct MyType; | ------------- `MyType` must be annotated with `#[derive(PartialEq)]` to be usable in patterns ... LL | const CONSTANT: &&MyType = &&MyType; | ------------------------ constant defined here ... LL | if let CONSTANT = &&MyType { | ^^^^^^^^ constant of non-structural type | note: the `PartialEq` trait must be derived, manual `impl`s are not sufficient; see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details --> $DIR/const-partial_eq-fallback-ice.rs:5:1 | LL | impl PartialEq for MyType { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```

remove StructuralEq trait

2024-01-24T06:56:23+00:00

Move /src/test to /tests

2023-01-11T09:32:08+00:00

rust/tests/ui/pattern/usefulness/const-partial_eq-fallback-ice.rs, branch try

Add additional context for non-sructural type constant used in pattern

remove StructuralEq trait

Move /src/test to /tests