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error[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/unsized-struct.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 `std::marker::Sized`
|
note: required by a bound in `Foo`
--> $DIR/unsized-struct.rs:4:12
|
LL | struct Foo<T> { data: T }
| ^ required by this bound in `Foo`
help: you could relax the implicit `Sized` bound on `T` if it were used through indirection like `&T` or `Box<T>`
--> $DIR/unsized-struct.rs:4:12
|
LL | struct Foo<T> { data: T }
| ^ - ...if indirection were used here: `Box<T>`
| |
| this could be changed to `T: ?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[E0277]: the size for values of type `T` cannot be known at compilation time
--> $DIR/unsized-struct.rs:13:35
|
LL | fn bar2<T: ?Sized>() { is_sized::<Bar<T>>() }
| - ^^^^^^ doesn't have a size known at compile-time
| |
| this type parameter needs to be `std::marker::Sized`
|
note: required because it appears within the type `Bar<T>`
--> $DIR/unsized-struct.rs:11:8
|
LL | struct Bar<T: ?Sized> { data: T }
| ^^^
note: required by a bound in `is_sized`
--> $DIR/unsized-struct.rs:1:13
|
LL | fn is_sized<T:Sized>() { }
| ^ required by this bound in `is_sized`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
|
LL - fn bar2<T: ?Sized>() { is_sized::<Bar<T>>() }
LL + fn bar2<T>() { is_sized::<Bar<T>>() }
|
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
|
