mirror of https://github.com/rust-lang/rust
137 lines
4.5 KiB
Plaintext
137 lines
4.5 KiB
Plaintext
error[E0277]: the size for values of type `X` cannot be known at compilation time
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--> $DIR/unsized5.rs:4:9
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LL | struct S1<X: ?Sized> {
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| - this type parameter needs to be `Sized`
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LL | f1: X,
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| ^ doesn't have a size known at compile-time
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= note: only the last field of a struct may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - struct S1<X: ?Sized> {
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LL + struct S1<X> {
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help: borrowed types always have a statically known size
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LL | f1: &X,
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| +
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | f1: Box<X>,
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| ++++ +
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error[E0277]: the size for values of type `X` cannot be known at compilation time
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--> $DIR/unsized5.rs:10:8
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LL | struct S2<X: ?Sized> {
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| - this type parameter needs to be `Sized`
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LL | f: isize,
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LL | g: X,
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| ^ doesn't have a size known at compile-time
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= note: only the last field of a struct may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - struct S2<X: ?Sized> {
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LL + struct S2<X> {
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help: borrowed types always have a statically known size
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LL | g: &X,
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | g: Box<X>,
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| ++++ +
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error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/unsized5.rs:15:8
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LL | f: str,
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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 `str`
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= note: only the last field of a struct may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: borrowed types always have a statically known size
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LL | f: &str,
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | f: Box<str>,
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| ++++ +
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error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
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--> $DIR/unsized5.rs:20:8
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LL | f: [u8],
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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 `[u8]`
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= note: only the last field of a struct may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: borrowed types always have a statically known size
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LL | f: &[u8],
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | f: Box<[u8]>,
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| ++++ +
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error[E0277]: the size for values of type `X` cannot be known at compilation time
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--> $DIR/unsized5.rs:25:8
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LL | enum E<X: ?Sized> {
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| - this type parameter needs to be `Sized`
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LL | V1(X, isize),
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| ^ doesn't have a size known at compile-time
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= note: no field of an enum variant may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - enum E<X: ?Sized> {
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LL + enum E<X> {
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help: borrowed types always have a statically known size
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LL | V1(&X, isize),
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | V1(Box<X>, isize),
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| ++++ +
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error[E0277]: the size for values of type `X` cannot be known at compilation time
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--> $DIR/unsized5.rs:29:12
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LL | enum F<X: ?Sized> {
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| - this type parameter needs to be `Sized`
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LL | V2{f1: X, f: isize},
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| ^ doesn't have a size known at compile-time
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= note: no field of an enum variant may have a dynamically sized type
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= help: change the field's type to have a statically known size
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help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - enum F<X: ?Sized> {
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LL + enum F<X> {
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help: borrowed types always have a statically known size
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LL | V2{f1: &X, f: isize},
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help: the `Box` type always has a statically known size and allocates its contents in the heap
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LL | V2{f1: Box<X>, f: isize},
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| ++++ +
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error: aborting due to 6 previous errors
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For more information about this error, try `rustc --explain E0277`.
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