mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 16:24:46 +00:00
c7d171d771
Instead of ``` error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time --> $DIR/issue-59324.rs:23:20 | LL | fn with_factory<H>(factory: dyn ThriftService<()>) {} | ^^^^^^^ doesn't have a size known at compile-time ``` output ``` error[E0277]: the size for values of type `(dyn ThriftService<(), AssocType = _> + 'static)` cannot be known at compilation time --> $DIR/issue-59324.rs:23:29 | LL | fn with_factory<H>(factory: dyn ThriftService<()>) {} | ^^^^^^^^^^^^^^^^^^^^^ doesn't have a size known at compile-time ```
38 lines
1.6 KiB
Plaintext
38 lines
1.6 KiB
Plaintext
error[E0277]: the size for values of type `<Self as Deref>::Target` cannot be known at compilation time
|
|
--> $DIR/issue-42312.rs:4:15
|
|
|
|
|
LL | fn baz(_: Self::Target) where Self: Deref {}
|
|
| ^^^^^^^^^^^^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `<Self as Deref>::Target`
|
|
= help: unsized fn params are gated as an unstable feature
|
|
help: consider further restricting the associated type
|
|
|
|
|
LL | fn baz(_: Self::Target) where Self: Deref, <Self as Deref>::Target: Sized {}
|
|
| ++++++++++++++++++++++++++++++++
|
|
help: function arguments must have a statically known size, borrowed types always have a known size
|
|
|
|
|
LL | fn baz(_: &Self::Target) where Self: Deref {}
|
|
| +
|
|
|
|
error[E0277]: the size for values of type `(dyn ToString + 'static)` cannot be known at compilation time
|
|
--> $DIR/issue-42312.rs:8:13
|
|
|
|
|
LL | pub fn f(_: dyn ToString) {}
|
|
| ^^^^^^^^^^^^ doesn't have a size known at compile-time
|
|
|
|
|
= help: the trait `Sized` is not implemented for `(dyn ToString + 'static)`
|
|
= help: unsized fn params are gated as an unstable feature
|
|
help: you can use `impl Trait` as the argument type
|
|
|
|
|
LL | pub fn f(_: impl ToString) {}
|
|
| ~~~~
|
|
help: function arguments must have a statically known size, borrowed types always have a known size
|
|
|
|
|
LL | pub fn f(_: &dyn ToString) {}
|
|
| +
|
|
|
|
error: aborting due to 2 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0277`.
|