Commit Graph

3 Commits

Author SHA1 Message Date
Esteban Küber
6dbad23641 When encountering sealed traits, point types that implement it
```
error[E0277]: the trait bound `S: d::Hidden` is not satisfied
  --> $DIR/sealed-trait-local.rs:53:20
   |
LL | impl c::Sealed for S {}
   |                    ^ the trait `d::Hidden` is not implemented for `S`
   |
note: required by a bound in `c::Sealed`
  --> $DIR/sealed-trait-local.rs:17:23
   |
LL |     pub trait Sealed: self::d::Hidden {
   |                       ^^^^^^^^^^^^^^^ required by this bound in `Sealed`
   = note: `Sealed` is a "sealed trait", because to implement it you also need to implement `c::d::Hidden`, which is not accessible; this is usually done to force you to use one of the provided types that already implement it
   = help: the following types implement the trait:
            - c::X
            - c::Y
```

The last `help` is new.
2023-10-27 17:40:52 +00:00
kernelmethod
d64968ba30 Fix a typo in the error reporting for sealed traits. 2023-08-05 00:38:52 +00:00
Esteban Küber
717c481739 Account for sealed traits in trait bound errors
When implementing a public trait with a private super-trait, we now emit
a note that the missing bound is not going to be able to be satisfied,
and we explain the concept of a sealed trait.
2023-06-22 16:50:21 +00:00