mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-11 16:15:03 +00:00
61 lines
2.2 KiB
Plaintext
61 lines
2.2 KiB
Plaintext
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
|
|
--> $DIR/feature-gate-unsized_fn_params.rs:17:8
|
|
|
|
|
LL | fn foo(x: dyn Foo) {
|
|
| ^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
|
|
= help: unsized fn params are gated as an unstable feature
|
|
help: you can use `impl Trait` as the argument type
|
|
|
|
|
LL | fn foo(x: impl Foo) {
|
|
| ~~~~
|
|
help: function arguments must have a statically known size, borrowed types always have a known size
|
|
|
|
|
LL | fn foo(x: &dyn Foo) {
|
|
| +
|
|
|
|
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
|
|
--> $DIR/feature-gate-unsized_fn_params.rs:21:8
|
|
|
|
|
LL | fn bar(x: Foo) {
|
|
| ^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
|
|
= help: unsized fn params are gated as an unstable feature
|
|
help: you can use `impl Trait` as the argument type
|
|
|
|
|
LL | fn bar(x: impl Foo) {
|
|
| ++++
|
|
help: function arguments must have a statically known size, borrowed types always have a known size
|
|
|
|
|
LL | fn bar(x: &Foo) {
|
|
| +
|
|
|
|
error[E0277]: the size for values of type `[()]` cannot be known at compilation time
|
|
--> $DIR/feature-gate-unsized_fn_params.rs:25:8
|
|
|
|
|
LL | fn qux(_: [()]) {}
|
|
| ^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `[()]`
|
|
= help: unsized fn params are gated as an unstable feature
|
|
help: function arguments must have a statically known size, borrowed types always have a known size
|
|
|
|
|
LL | fn qux(_: &[()]) {}
|
|
| +
|
|
|
|
error[E0277]: the size for values of type `(dyn Foo + 'static)` cannot be known at compilation time
|
|
--> $DIR/feature-gate-unsized_fn_params.rs:29:9
|
|
|
|
|
LL | foo(*x);
|
|
| ^^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `(dyn Foo + 'static)`
|
|
= note: all function arguments must have a statically known size
|
|
= help: unsized fn params are gated as an unstable feature
|
|
|
|
error: aborting due to 4 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|