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Taylor Cramer
d00d4dfe0d
This CL makes a number of small changes to dyn compatibility errors: - "object safety" has been renamed to "dyn-compatibility" throughout - "Convert to enum" suggestions are no longer generated when there exists a type-generic impl of the trait or an impl for `dyn OtherTrait` - Several error messages are reorganized for user readability Additionally, the dyn compatibility error creation code has been split out into functions. cc #132713 cc #133267
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
error[E0038]: the trait `Trait` is not dyn compatible
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--> $DIR/E0038.rs:5:20
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LL | fn call_foo(x: Box<dyn Trait>) {
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| ^^^^^^^^^ `Trait` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
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for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/E0038.rs:2:22
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LL | trait Trait {
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| ----- this trait is not dyn compatible...
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LL | fn foo(&self) -> Self;
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| ^^^^ ...because method `foo` references the `Self` type in its return type
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= help: consider moving `foo` to another trait
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error[E0038]: the trait `Trait` is not dyn compatible
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--> $DIR/E0038.rs:7:13
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LL | let y = x.foo();
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| ^^^^^^^ `Trait` is not dyn compatible
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note: for a trait to be dyn compatible it needs to allow building a vtable
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for more information, visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/E0038.rs:2:22
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LL | trait Trait {
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| ----- this trait is not dyn compatible...
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LL | fn foo(&self) -> Self;
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| ^^^^ ...because method `foo` references the `Self` type in its return type
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= help: consider moving `foo` to another trait
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error[E0277]: the size for values of type `dyn Trait` cannot be known at compilation time
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--> $DIR/E0038.rs:7:9
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LL | let y = x.foo();
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| ^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `dyn Trait`
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= note: all local variables must have a statically known size
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= help: unsized locals are gated as an unstable feature
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0038, E0277.
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For more information about an error, try `rustc --explain E0038`.
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