57 lines
2.4 KiB
Plaintext
57 lines
2.4 KiB
Plaintext
error[E0606]: casting `*const dyn A` as `*const dyn B` is invalid
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--> $DIR/ptr-to-trait-obj-different-args.rs:18:27
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LL | let b: *const dyn B = a as _;
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| ^^^^^^
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= note: vtable kinds may not match
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error[E0308]: mismatched types
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--> $DIR/ptr-to-trait-obj-different-args.rs:21:34
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LL | let y: *const dyn Trait<Y> = x as _;
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| ^^^^^^ expected `X`, found `Y`
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= note: expected trait object `dyn Trait<X>`
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found trait object `dyn Trait<Y>`
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= help: `dyn Trait<Y>` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well
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error[E0308]: mismatched types
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--> $DIR/ptr-to-trait-obj-different-args.rs:27:34
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LL | fn generic<T>(x: *const dyn Trait<X>, t: *const dyn Trait<T>) {
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| - found this type parameter
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LL | let _: *const dyn Trait<T> = x as _;
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| ^^^^^^ expected `X`, found type parameter `T`
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= note: expected trait object `dyn Trait<X>`
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found trait object `dyn Trait<T>`
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= help: `dyn Trait<T>` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well
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error[E0308]: mismatched types
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--> $DIR/ptr-to-trait-obj-different-args.rs:28:34
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LL | fn generic<T>(x: *const dyn Trait<X>, t: *const dyn Trait<T>) {
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| - expected this type parameter
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LL | let _: *const dyn Trait<T> = x as _;
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LL | let _: *const dyn Trait<X> = t as _;
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| ^^^^^^ expected type parameter `T`, found `X`
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= note: expected trait object `dyn Trait<T>`
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found trait object `dyn Trait<X>`
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= help: `dyn Trait<X>` implements `Trait` so you could box the found value and coerce it to the trait object `Box<dyn Trait>`, you will have to change the expected type as well
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error[E0308]: mismatched types
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--> $DIR/ptr-to-trait-obj-different-args.rs:36:5
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LL | x as _
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| ^^^^^^ expected `u8`, found `u32`
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= note: expected trait object `dyn Assocked<Assoc = u8>`
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found trait object `dyn Assocked<Assoc = u32>`
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error: aborting due to 5 previous errors
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Some errors have detailed explanations: E0308, E0606.
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For more information about an error, try `rustc --explain E0308`.
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