mirror of https://github.com/rust-lang/rust
61 lines
2.3 KiB
Plaintext
61 lines
2.3 KiB
Plaintext
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
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--> $DIR/feature-gate-unsized_fn_params.rs:17:8
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LL | fn foo(x: dyn 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 Foo + 'static)`
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= help: unsized fn params are gated as an unstable feature
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help: you can use `impl Trait` as the argument type
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LL | fn foo(x: impl Foo) {
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| ~~~~
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help: function arguments must have a statically known size, borrowed types always have a known size
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LL | fn foo(x: &dyn Foo) {
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| +
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error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
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--> $DIR/feature-gate-unsized_fn_params.rs:21:8
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LL | fn bar(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 Foo + 'static)`
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= help: unsized fn params are gated as an unstable feature
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help: you can use `impl Trait` as the argument type
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LL | fn bar(x: impl Foo) {
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| ++++
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help: function arguments must have a statically known size, borrowed types always have a known size
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LL | fn bar(x: &dyn Foo) {
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| ++++
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error[E0277]: the size for values of type `[()]` cannot be known at compilation time
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--> $DIR/feature-gate-unsized_fn_params.rs:25:8
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LL | fn qux(_: [()]) {}
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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 `[()]`
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= help: unsized fn params are gated as an unstable feature
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help: function arguments must have a statically known size, borrowed slices always have a known size
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LL | fn qux(_: &[()]) {}
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| +
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error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
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--> $DIR/feature-gate-unsized_fn_params.rs:29:9
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LL | foo(*x);
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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 Foo + 'static)`
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= note: all function arguments must have a statically known size
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= help: unsized fn params are gated as an unstable feature
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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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