mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-26 00:34:06 +00:00
20 lines
692 B
Plaintext
20 lines
692 B
Plaintext
error[E0782]: expected a type, found a trait
|
|
--> $DIR/ice-unsized-fn-params-2.rs:7:14
|
|
|
|
|
LL | fn guard(_s: Copy) -> bool {
|
|
| ^^^^
|
|
|
|
|
= note: `Copy` it is dyn-incompatible, so it can't be `dyn`
|
|
help: use a new generic type parameter, constrained by `Copy`
|
|
|
|
|
LL | fn guard<T: Copy>(_s: T) -> bool {
|
|
| +++++++++ ~
|
|
help: you can also use an opaque type, but users won't be able to specify the type parameter when calling the `fn`, having to rely exclusively on type inference
|
|
|
|
|
LL | fn guard(_s: impl Copy) -> bool {
|
|
| ++++
|
|
|
|
error: aborting due to 1 previous error
|
|
|
|
For more information about this error, try `rustc --explain E0782`.
|