8c04999226
When we encounter a `dyn Trait` that isn't object safe, look for its
implementors. If there's one, mention using it directly If there are
less than 9, mention the possibility of creating a new enum and using
that instead.
Account for object unsafe `impl Trait on dyn Trait {}`. Make a
distinction between public and sealed traits.
Fix #80194.
17 lines
911 B
Plaintext
17 lines
911 B
Plaintext
error[E0038]: the trait `Foo` cannot be made into an object
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--> $DIR/foreign-dyn-error.rs:6:12
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LL | let _: &dyn rpitit::Foo = todo!();
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| ^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/auxiliary/rpitit.rs:6:21
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LL | fn bar(self) -> impl Deref<Target = impl Sized>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait cannot be made into an object because method `bar` references an `impl Trait` type in its return type
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= help: only type `rpitit::Foreign` implements the trait, consider using it directly instead
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0038`.
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