57 lines
2.1 KiB
Text
57 lines
2.1 KiB
Text
error[E0277]: the trait bound `W<(dyn A + 'static)>: A` is not satisfied
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--> $DIR/ptr-to-trait-obj-wrap.rs:13:5
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LL | a as _
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| ^ the trait `A` is not implemented for `W<(dyn A + 'static)>`
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help: this trait has no implementations, consider adding one
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--> $DIR/ptr-to-trait-obj-wrap.rs:7:1
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LL | trait A {}
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| ^^^^^^^
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= note: required for the cast from `*const W<(dyn A + 'static)>` to `*const dyn A`
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error[E0277]: the size for values of type `(dyn A + 'static)` cannot be known at compilation time
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--> $DIR/ptr-to-trait-obj-wrap.rs:13:5
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LL | a as _
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| ^ doesn't have a size known at compile-time
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= help: within `W<(dyn A + 'static)>`, the trait `Sized` is not implemented for `(dyn A + 'static)`
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note: required because it appears within the type `W<(dyn A + 'static)>`
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--> $DIR/ptr-to-trait-obj-wrap.rs:9:8
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LL | struct W<T: ?Sized>(T);
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| ^
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= note: required for the cast from `*const W<(dyn A + 'static)>` to `*const dyn A`
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error[E0277]: the trait bound `W<(dyn A + 'static)>: A` is not satisfied
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--> $DIR/ptr-to-trait-obj-wrap.rs:19:5
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LL | a as _
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| ^ the trait `A` is not implemented for `W<(dyn A + 'static)>`
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help: this trait has no implementations, consider adding one
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--> $DIR/ptr-to-trait-obj-wrap.rs:7:1
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LL | trait A {}
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| ^^^^^^^
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= note: required for the cast from `*const W<W<(dyn A + 'static)>>` to `*const W<dyn A>`
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error[E0277]: the size for values of type `(dyn A + 'static)` cannot be known at compilation time
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--> $DIR/ptr-to-trait-obj-wrap.rs:19:5
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LL | a as _
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| ^ doesn't have a size known at compile-time
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= help: within `W<(dyn A + 'static)>`, the trait `Sized` is not implemented for `(dyn A + 'static)`
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note: required because it appears within the type `W<(dyn A + 'static)>`
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--> $DIR/ptr-to-trait-obj-wrap.rs:9:8
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LL | struct W<T: ?Sized>(T);
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| ^
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= note: required for the cast from `*const W<W<(dyn A + 'static)>>` to `*const W<dyn A>`
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0277`.
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