rust/tests/ui/traits/next-solver/normalize/normalize-param-env-2.stderr
Nicholas Nethercote ce2aa97cd6 Move has_self field to hir::AssocKind::Fn.
`hir::AssocItem` currently has a boolean `fn_has_self_parameter` field,
which is misplaced, because it's only relevant for associated fns, not
for associated consts or types. This commit moves it (and renames it) to
the `AssocKind::Fn` variant, where it belongs.

This requires introducing a new C-style enum, `AssocTag`, which is like
`AssocKind` but without the fields. This is because `AssocKind` values
are passed to various functions like `find_by_ident_and_kind` to
indicate what kind of associated item should be searched for, and having
to specify `has_self` isn't relevant there.

New methods:
- Predicates `AssocItem::is_fn` and `AssocItem::is_method`.
- `AssocItem::as_tag` which converts `AssocItem::kind` to `AssocTag`.

Removed `find_by_name_and_kinds`, which is unused.

`AssocItem::descr` can now distinguish between methods and associated
functions, which slightly improves some error messages.
2025-04-14 16:13:04 +10:00

51 lines
1.6 KiB
Text

error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc: A<T>`
--> $DIR/normalize-param-env-2.rs:24:22
|
LL | Self::Assoc: A<T>,
| ^^^^
|
note: the requirement `<() as A<T>>::Assoc: A<T>` appears on the `impl`'s associated function `f` but not on the corresponding trait's associated function
--> $DIR/normalize-param-env-2.rs:12:8
|
LL | trait A<T> {
| - in this trait
...
LL | fn f()
| ^ this trait's associated function doesn't have the requirement `<() as A<T>>::Assoc: A<T>`
error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc: A<T>`
--> $DIR/normalize-param-env-2.rs:24:22
|
LL | Self::Assoc: A<T>,
| ^^^^
error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc well-formed`
--> $DIR/normalize-param-env-2.rs:24:22
|
LL | Self::Assoc: A<T>,
| ^^^^
error[E0275]: overflow evaluating the requirement `(): A<T>`
--> $DIR/normalize-param-env-2.rs:27:10
|
LL | <() as A<T>>::f();
| ^^
error[E0275]: overflow evaluating the requirement `<() as A<T>>::Assoc: A<T>`
--> $DIR/normalize-param-env-2.rs:27:9
|
LL | <() as A<T>>::f();
| ^^^^^^^^^^^^^^^^^
|
note: required by a bound in `A::f`
--> $DIR/normalize-param-env-2.rs:14:22
|
LL | fn f()
| - required by a bound in this associated function
LL | where
LL | Self::Assoc: A<T>,
| ^^^^ required by this bound in `A::f`
error: aborting due to 5 previous errors
For more information about this error, try `rustc --explain E0275`.