mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-24 07:44:10 +00:00
30 lines
1.1 KiB
Plaintext
30 lines
1.1 KiB
Plaintext
error[E0277]: the size for values of type `T` cannot be known at compilation time
|
|
--> $DIR/unsized-enum.rs:6:36
|
|
|
|
|
LL | fn foo2<T: ?Sized>() { not_sized::<Foo<T>>() }
|
|
| - ^^^^^^ doesn't have a size known at compile-time
|
|
| |
|
|
| this type parameter needs to be `Sized`
|
|
|
|
|
note: required by a bound in `Foo`
|
|
--> $DIR/unsized-enum.rs:4:10
|
|
|
|
|
LL | enum Foo<U> { FooSome(U), FooNone }
|
|
| ^ required by this bound in `Foo`
|
|
help: you could relax the implicit `Sized` bound on `U` if it were used through indirection like `&U` or `Box<U>`
|
|
--> $DIR/unsized-enum.rs:4:10
|
|
|
|
|
LL | enum Foo<U> { FooSome(U), FooNone }
|
|
| ^ - ...if indirection were used here: `Box<U>`
|
|
| |
|
|
| this could be changed to `U: ?Sized`...
|
|
help: consider removing the `?Sized` bound to make the type parameter `Sized`
|
|
|
|
|
LL - fn foo2<T: ?Sized>() { not_sized::<Foo<T>>() }
|
|
LL + fn foo2<T>() { not_sized::<Foo<T>>() }
|
|
|
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|