mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-22 14:55:26 +00:00
c5598d6a9e
avoid `{type error}` being leaked in user-facing messages,
particularly when using the `adt_const_params` feature
33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
error: using function pointers as const generic parameters is forbidden
|
|
--> $DIR/fn-const-param-infer.rs:8:25
|
|
|
|
|
LL | struct Checked<const F: fn(usize) -> bool>;
|
|
| ^^^^^^^^^^^^^^^^^
|
|
|
|
|
= note: the only supported types are integers, `bool`, and `char`
|
|
|
|
error[E0308]: mismatched types
|
|
--> $DIR/fn-const-param-infer.rs:33:25
|
|
|
|
|
LL | let _ = Checked::<{ generic_arg::<u32> }>;
|
|
| ^^^^^^^^^^^^^^^^^^ expected fn pointer, found fn item
|
|
|
|
|
= note: expected fn pointer `fn(usize) -> _`
|
|
found fn item `fn(u32) -> _ {generic_arg::<u32>}`
|
|
|
|
error[E0282]: type annotations needed
|
|
--> $DIR/fn-const-param-infer.rs:35:23
|
|
|
|
|
LL | let _ = Checked::<generic>;
|
|
| ^^^^^^^ cannot infer type of the type parameter `T` declared on the function `generic`
|
|
|
|
|
help: consider specifying the generic argument
|
|
|
|
|
LL | let _ = Checked::<generic::<T>>;
|
|
| +++++
|
|
|
|
error: aborting due to 3 previous errors
|
|
|
|
Some errors have detailed explanations: E0282, E0308.
|
|
For more information about an error, try `rustc --explain E0282`.
|