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c6205055e0
Centralize emitting an error in `const_to_pat` so that all errors from that evaluating a `const` in a pattern can add addditional information. With this, now point at the `const` item's definition:
```
error[E0158]: constant pattern depends on a generic parameter
--> $DIR/associated-const-type-parameter-pattern.rs:20:9
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LL | pub trait Foo {
| -------------
LL | const X: EFoo;
| ------------- constant defined here
...
LL | A::X => println!("A::X"),
| ^^^^
```
15 lines
714 B
Plaintext
15 lines
714 B
Plaintext
error: to use a constant of type `NoDerive` in a pattern, `NoDerive` must be annotated with `#[derive(PartialEq)]`
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--> $DIR/cant-hide-behind-doubly-indirect-embedded.rs:22:9
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LL | const WRAP_DOUBLY_INDIRECT_INLINE: & &WrapInline = & &WrapInline(& & NoDerive(0));
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| ------------------------------------------------ constant defined here
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...
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LL | WRAP_DOUBLY_INDIRECT_INLINE => { panic!("WRAP_DOUBLY_INDIRECT_INLINE matched itself"); }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: the traits must be derived, manual `impl`s are not sufficient
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= note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
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error: aborting due to 1 previous error
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