mirror of https://github.com/rust-lang/rust
33 lines
1.5 KiB
Plaintext
33 lines
1.5 KiB
Plaintext
error[E0620]: cast to unsized type: `i32` as `dyn MyAdd<i32>`
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--> $DIR/type-parameter-defaults-referencing-Self-ppaux.rs:14:13
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LL | let y = x as dyn MyAdd<i32>;
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| ^^^^^^^^^^^^^^^^^^^
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help: consider using a box or reference as appropriate
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--> $DIR/type-parameter-defaults-referencing-Self-ppaux.rs:14:13
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LL | let y = x as dyn MyAdd<i32>;
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| ^
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error[E0038]: the trait `MyAdd` cannot be made into an object
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--> $DIR/type-parameter-defaults-referencing-Self-ppaux.rs:14:18
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LL | let y = x as dyn MyAdd<i32>;
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| ^^^^^^^^^^^^^^ `MyAdd` 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/type-parameter-defaults-referencing-Self-ppaux.rs:6:55
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LL | trait MyAdd<Rhs=Self> { fn add(&self, other: &Rhs) -> Self; }
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| ----- ^^^^ ...because method `add` references the `Self` type in its return type
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| |
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| this trait cannot be made into an object...
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= help: consider moving `add` to another trait
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= help: only type `i32` implements the trait, consider using it directly instead
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0038, E0620.
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For more information about an error, try `rustc --explain E0038`.
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